MONITORS · YOUR NEXT FACE-OFF

MSI MPG 321CURX QD-OLED vs MSI MPG 491CQPX QD-OLED

Real specs. Clear sources.Exact models · UK & US buying links

Compared products

YOUR FIRST CHOICE

MSI MPG 321CURX QD-OLED

31.5-inch · 3840 × 2160 · 240 Hz · MSI global specification

Full product profile Official image

Exact model & source notes

A 31.5-inch 1700R curved 3840 × 2160 QD-OLED monitor running up to 240 Hz over DisplayPort, HDMI 2.1 or USB-C, with a 0.03 ms GtG response rating, DisplayHDR True Black 400 and up to 98 W USB-C charging.

Specifications checked 21 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

WHICH SUITS YOU?

Choose the 321CURX QD-OLED for

Higher stated native resolution: 3840 × 2160 vs 5120 × 1440
Smaller stated screen diagonal: 31.5 in vs 49 in
A 16:9 screen

Choose the 491CQPX QD-OLED for

Larger stated screen diagonal: 49 in vs 31.5 in
A 32:9 screen

Built from verified specifications that differ. Not a rating or a recommendation.

See the 15 verified differences

THE CONTENDER

MSI MPG 491CQPX QD-OLED

49-inch · 5120 × 1440 · 240 Hz · exact MSI global configuration

Full product profile Official image

Exact model & source notes

A 49-inch 32:9 1800R curved QD-OLED monitor at 5120 × 1440 running up to 240 Hz over HDMI 2.1, DisplayPort 1.4a or USB-C, with a 0.03 ms GtG response rating, DisplayHDR True Black 400, 98 W USB-C charging, KVM and PIP/PBP.

Specifications checked 21 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

321CURX QD-OLED UK & US retailers

UK & US price history: no verified listing yet

491CQPX QD-OLED UK & US retailers

UK & US price history: no verified listing yet

Search links open retailer results, not a matched listing; eBay listings are checked daily. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.

THE DIFFERENCES, MADE VISIBLE

Visual facts

Differences first. Select a topic for its graphic, sources and conditions.

How to read this comparison

Manufacturer facts for the exact models shown. Not a quality rating or a test result.
“Different” means the known values differ, not that one is better.
Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.

SPECIFICATIONS SIDE BY SIDE8 topics

SELECTED TOPIC

01 / 08

Native resolution

Check the exact configuration and source conditions for your use.

MSI MPG 321CURX QD-OLED3840 × 2160

Manufacturer specification

Source 1

MSI MPG 491CQPX QD-OLED5120 × 1440

Manufacturer specification

Source 1 Source 2

Explore the full specifications

Match the monitor to the connection. Refresh limits depend on the input, cable and source device. Confirm the exact regional ports, stand adjustment and mount. Manufacturer response-time methods such as MPRT and GtG are different; neither the image nor these figures establish an independent motion or colour-quality test.

WHAT CHANGES BETWEEN THEM?

Key differences

Full specifications ↓

15 verified differences, most decision-relevant first. 7 are also drawn in Visual facts above. Missing information stays separate.

Native resolution

In Visual facts

MSI MPG 321CURX QD-OLED3840 × 2160

MSI MPG 491CQPX QD-OLED5120 × 1440

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Check the exact configuration and source conditions for your use.

Screen diagonal

In Visual facts

MSI MPG 321CURX QD-OLED31.5 in

MSI MPG 491CQPX QD-OLED49 in

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification · Manufacturer panel diagonal; rounded size printed on marketing imagery may differ.

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification · Active screen diagonal. Screens with different aspect ratios have different usable areas at the same diagonal.

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Check the exact configuration and source conditions for your use.

Stand adjustment

In Visual facts

MSI MPG 321CURX QD-OLEDTilt −5° to +15°; swivel ±30°; no pivot; height travel 100 mm

MSI MPG 491CQPX QD-OLEDTilt −5° to +20°; swivel ±30°; height travel 100 mm; no portrait pivot

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Compare the supplied stand and mounting requirements. These affect positioning and desk fit; they do not establish panel quality. Check any separately stated limits or conflicting dimensions.

Aspect ratio

In Visual facts

MSI MPG 321CURX QD-OLED16:9

MSI MPG 491CQPX QD-OLED32:9

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Check the exact configuration and source conditions for your use.

Package contents

In Visual facts

MSI MPG 321CURX QD-OLEDMonitor and stand; HDMI 2.1 cable, DisplayPort 1.4a cable, C13 power cord, quick guide, USB Type-B to A cable and 4 VESA wall-mount screws

MSI MPG 491CQPX QD-OLEDHDMI 2.1 cable, DisplayPort 1.4a cable, USB Type-B to A cable, C13 power cord, quick guide, 4 VESA wall-mount screws

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification · Package contents can vary by country; check the listing.

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification · Package contents may vary by country; check the listing.

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Check the exact configuration and source conditions for your use.

Declared sRGB gamut

In Visual facts

MSI MPG 321CURX QD-OLED138% (CIE 1976)

MSI MPG 491CQPX QD-OLED146% (CIE 1976)

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification · Figures above 100% describe colour volume, not coverage.

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification · Figures above 100% describe colour volume, not coverage.

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Check the exact configuration and source conditions for your use.

Show 9 more verified differences

Gross shipping weight

MSI MPG 321CURX QD-OLED11.9 kg

MSI MPG 491CQPX QD-OLED16.4 kg

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

A size or weight trade-off; it does not establish the better product.

Pixel pitch

MSI MPG 321CURX QD-OLED0.1814 × 0.1814 mm

MSI MPG 491CQPX QD-OLED0.233 × 0.233 mm

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Check the exact configuration and source conditions for your use.

Screen shape

MSI MPG 321CURX QD-OLEDCurved, 1700R

MSI MPG 491CQPX QD-OLEDCurved, 1800R

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Check the exact configuration and source conditions for your use.

Stand depth

In Visual facts

MSI MPG 321CURX QD-OLED318 mm

MSI MPG 491CQPX QD-OLED328 mm

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification · Manufacturer dimensions with stand, shown width × height × depth. Stand depth is not panel thickness and excludes additional cable clearance.

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification · Manufacturer assembled dimensions with stand; MSI lists W × D × H, shown here width × height × depth. Stand depth excludes additional cable clearance; this is not panel thickness.

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

A size or weight trade-off; it does not establish the better product.

Stand tilt

MSI MPG 321CURX QD-OLED−5° to 15°

MSI MPG 491CQPX QD-OLED−5° to 20°

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Check the exact configuration and source conditions for your use.

Active display area

MSI MPG 321CURX QD-OLED699.48 × 394.73 mm (horizontal × vertical)

MSI MPG 491CQPX QD-OLED1196.7 × 339.2 mm (horizontal × vertical)

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Check the exact configuration and source conditions for your use.

Dimensions with stand

MSI MPG 321CURX QD-OLED714 × 473 × 318 mm (width × height × depth, with stand)

MSI MPG 491CQPX QD-OLED1195 × 410 × 328 mm (width × height × depth, with stand)

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification · Manufacturer dimensions with stand, shown width × height × depth. Stand depth is not panel thickness and excludes additional cable clearance.

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

A size or weight trade-off; it does not establish the better product.

Dimensions without stand

MSI MPG 321CURX QD-OLED714 × 423 × 123 mm (width × height × depth)

MSI MPG 491CQPX QD-OLED1195 × 372 × 190 mm (width × height × depth)

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

A size or weight trade-off; it does not establish the better product.

Net weight

MSI MPG 321CURX QD-OLED8.4 kg

MSI MPG 491CQPX QD-OLED10.6 kg

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification · Manufacturer net weight; the datasheet does not state whether the stand is included.

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification · MSI does not say whether this is with or without the stand.

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

A size or weight trade-off; it does not establish the better product.

Missing or non-comparable evidence (9)

HDR support

MSI MPG 321CURX QD-OLEDDisplayHDR True Black 400

MSI MPG 491CQPX QD-OLEDYes

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

The recorded units or formats differ. These values are not ranked.

On-screen controls

MSI MPG 321CURX QD-OLEDNot verified

MSI MPG 491CQPX QD-OLED5-way joystick

Sources

MSI MPG 321CURX QD-OLED

No source recorded for this side.

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — exact model datasheet

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Built-in speakers

MSI MPG 321CURX QD-OLEDNot verified

MSI MPG 491CQPX QD-OLEDNot verified

Sources

MSI MPG 321CURX QD-OLED

No source recorded for this side.

MSI MPG 491CQPX QD-OLED

The datasheet lists only a headphone output under audio ports and does not explicitly state whether speakers are built in. · Manufacturer specification

MSI MPG 491CQPX QD-OLED — exact model datasheet

Evidence is missing or conflicting on at least one side. This is not a verified difference.

DisplayPort version

MSI MPG 321CURX QD-OLED1.4a

MSI MPG 491CQPX QD-OLEDNot verified

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Manufacturer-listed HDR certification

MSI MPG 321CURX QD-OLEDNot verified

MSI MPG 491CQPX QD-OLEDDisplayHDR True Black 400

Sources

MSI MPG 321CURX QD-OLED

No source recorded for this side.

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Declared HDR peak brightness

MSI MPG 321CURX QD-OLEDNot verified

MSI MPG 491CQPX QD-OLED1000 cd/m²

Sources

MSI MPG 321CURX QD-OLED

No source recorded for this side.

MSI MPG 491CQPX QD-OLED

Manufacturer specification · Typical value in Peak 1000 mode at 3% APL; not full-screen or sustained brightness.

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Manufacturer warranty

MSI MPG 321CURX QD-OLEDNot verified

MSI MPG 491CQPX QD-OLEDNot verified

Sources

MSI MPG 321CURX QD-OLED

MSI's MPG 321CURX datasheet has no warranty row; check regional warranty terms with MSI. · Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Mains power input

MSI MPG 321CURX QD-OLEDNot verified

MSI MPG 491CQPX QD-OLED100–240 V AC, 50/60 Hz

Sources

MSI MPG 321CURX QD-OLED

No source recorded for this side.

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Supplied power arrangement

MSI MPG 321CURX QD-OLEDInternal power board; 100–240 V, 50/60 Hz AC input

MSI MPG 491CQPX QD-OLEDInternal power board

Sources

MSI MPG 321CURX QD-OLED

Manufacturer specification

MSI MPG 321CURX QD-OLED — exact model specifications

MSI MPG 491CQPX QD-OLED

Manufacturer specification

MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet

One source states less detail or a rounded figure. This is not a verified difference; check the exact configuration.

38 shared fields have the same recorded value.

WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

MSI MPG 321CURX QD-OLED

What it brings

240 Hz at 3840 × 2160 on every input, a 0.03 ms GtG response rating and 99% DCI-P3 (CIE 1976), with USB-C video, up to 98 W charging, a USB hub and KVM.
Manufacturer source

What to check

Allow 318 mm of desk depth for the stand, which has no pivot. The USB hub ports are USB 2.0, and the 1000 cd/m² HDR figure applies only in Peak 1000 mode at 3% APL.
Manufacturer source

MSI MPG 491CQPX QD-OLED

What it brings

The 5120 × 1440 panel reaches 240 Hz on every input with a 0.03 ms GtG response rating and 99% DCI-P3 (CIE 1976), and PIP/PBP plus KVM let two computers share the screen and peripherals.
Manufacturer source Manufacturer source

What to check

With the stand it is 1195 mm wide and 328 mm deep, so it needs a large desk.
Manufacturer source Manufacturer source
The stand has no portrait pivot and the hub is USB 2.0. The 1000 cd/m² HDR figure applies only in Peak 1000 mode at 3% APL; typical SDR brightness is 250 cd/m².
Manufacturer source Manufacturer source

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

63 of 63 specifications Sources in each row

Source-backed specifications for MSI MPG 321CURX QD-OLED and MSI MPG 491CQPX QD-OLED
Specification	MSI MPG 321CURX QD-OLED	MSI MPG 491CQPX QD-OLED

Screen diagonalDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Manufacturer panel diagonal; rounded size printed on marketing imagery may differ. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Active screen diagonal. Screens with different aspect ratios have different usable areas at the same diagonal. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	31.5 in	49 in
Native resolutionDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	3840 × 2160	5120 × 1440
Panel technology Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	QD-OLED	QD-OLED
Aspect ratioDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	16:9	32:9
Declared brightness Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Typical SDR brightness; not an HDR peak figure. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · SDR manufacturer brightness; HDR modes have separate area-dependent values. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	250 cd/m²	250 cd/m²
Static contrast claim Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	1500000:1	1500000:1
Colour depth Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	10-bit	10-bit
Screen shapeDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Curved, 1700R	Curved, 1800R
HDR support Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	DisplayHDR True Black 400	Yes
HDR brightness conditions Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Manufacturer HDR mode conditions; APL means average picture level. Not full-screen SDR brightness. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · HDR brightness depends on the mode and average picture level (APL); these are not full-screen figures. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	450 cd/m² typical in True Black 400 mode at 10% APL; 1000 cd/m² typical in Peak 1000 mode at 3% APL	450 cd/m² typical in True Black 400 mode at 10% APL; 1000 cd/m² typical in Peak 1000 mode at 3% APL
Screen surface Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Anti-reflection	Anti-reflection
Active display areaDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	699.48 × 394.73 mm (horizontal × vertical)	1196.7 × 339.2 mm (horizontal × vertical)
Pixel pitchDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	0.1814 × 0.1814 mm	0.233 × 0.233 mm
Declared viewing angles Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	178° horizontal / 178° vertical	178° horizontal / 178° vertical
Declared sRGB gamutDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Figures above 100% describe colour volume, not coverage. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Figures above 100% describe colour volume, not coverage. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	138% (CIE 1976)	146% (CIE 1976)
Declared DCI-P3 gamut Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	99% (CIE 1976)	99% (CIE 1976)
Declared Adobe RGB gamut Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	98% (CIE 1976)	98% (CIE 1976)
Displayable colours Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	1.07 billion	1.07 billion
Manufacturer-listed HDR certification Sources MSI MPG 321CURX QD-OLED No source recorded. MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Not provided	DisplayHDR True Black 400
Declared HDR peak brightness Sources MSI MPG 321CURX QD-OLED No source recorded. MSI MPG 491CQPX QD-OLED Manufacturer specification · Typical value in Peak 1000 mode at 3% APL; not full-screen or sustained brightness. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Not provided	1000 cd/m²

Refresh rate Sources MSI MPG 321CURX QD-OLED Manufacturer specification · DisplayPort: up to 240 Hz; HDMI: up to 240 Hz; USB-C DisplayPort Alt Mode: up to 240 Hz, at native 3840 × 2160 resolution. Source, cable and selected mode must support the signal. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Up to 240 Hz at 5120 × 1440 through DisplayPort, HDMI or USB-C DisplayPort Alt Mode. Required source, cable and mode support must be checked. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	240 Hz	240 Hz
Adaptive sync Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Check that your graphics card or console, input and mode support the listed technology. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Check that your graphics card or console, input and mode support the listed technology. MSI MPG 491CQPX QD-OLED — exact model datasheet	Yes	Yes
Listed sync technology Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Requires a compatible source, port, driver and mode. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Requires a compatible source, interface, operating mode and driver. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	NVIDIA G-SYNC Compatible; AMD FreeSync Premium Pro	NVIDIA G-SYNC Compatible; AMD FreeSync Premium Pro
Response method and claim Sources MSI MPG 321CURX QD-OLED Manufacturer specification · GtG, MPRT and input lag measure different things. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · GtG, MPRT and input lag measure different things; a minimum figure is a best case, not an average. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	0.03 ms GtG	0.03 ms GtG
Declared adaptive-sync range Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	48–240 Hz	48–240 Hz
Native-resolution input limitsDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Compatible source, cable and mode support required. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	HDMI, DisplayPort and USB-C: 3840 × 2160 up to 240 Hz	HDMI, DisplayPort and USB-C: 5120 × 1440 up to 240 Hz
Maximum HDMI refresh at native resolution Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Compatible source and cable required. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Compatible source and cable required. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	240 Hz	240 Hz
Maximum USB-C refresh at native resolution Sources MSI MPG 321CURX QD-OLED Manufacturer specification · USB-C DisplayPort Alt Mode; compatible source and cable required. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Source port and cable must support DisplayPort Alt Mode. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	240 Hz	240 Hz
Declared GtG response Sources MSI MPG 321CURX QD-OLED Manufacturer specification · The feature text describes this as 'up to 0.03 ms GtG', a best-case manufacturer figure, not an average or input lag. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	0.03 ms	0.03 ms

Inputs and versions Sources MSI MPG 321CURX QD-OLED Manufacturer specification · DisplayPort: up to 240 Hz; HDMI: up to 240 Hz; USB-C DisplayPort Alt Mode: up to 240 Hz, at native 3840 × 2160 resolution. Source, cable and selected mode must support the signal. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Up to 240 Hz at 5120 × 1440 through DisplayPort, HDMI or USB-C DisplayPort Alt Mode. Required source, cable and mode support must be checked. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	1 × DisplayPort 1.4a; 2 × HDMI 2.1; 1 × USB-C with DisplayPort Alt Mode and up to 98 W Power Delivery; headphone output	1 × DisplayPort 1.4a; 2 × HDMI 2.1; 1 × USB-C with DisplayPort Alt Mode and up to 98 W Power Delivery; headphone output
USB hub Sources MSI MPG 321CURX QD-OLED Manufacturer specification · USB hub data needs an upstream connection to the computer. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · USB hub data needs an upstream connection to the computer. MSI MPG 491CQPX QD-OLED — exact model datasheet	Yes	Yes
USB hub connections Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	2 × USB 2.0 Type-A; 1 × USB 2.0 Type-B	2 × USB 2.0 Type-A; 1 × USB 2.0 Type-B
USB-C charging Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Maximum charging output, not the monitor’s power consumption. Compatible device and cable required. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Manufacturer maximum USB-C charging output; not monitor power consumption. Compatible host and cable required. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	98 W	98 W
KVM function Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Manufacturer-listed function; compatible host and peripheral connections required. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Manufacturer-listed KVM function; compatible host connections and peripheral setup required. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Yes	Yes
Picture-in-picture / picture-by-picture Sources MSI MPG 321CURX QD-OLED Manufacturer specification · MSI does not document mode restrictions with HDR or adaptive sync. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · MSI does not state supported resolutions, refresh rates or feature interactions. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Yes	Yes
HDMI CEC Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Requires a CEC-capable source; MSI does not say which HDMI input carries CEC. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Compatible source device required. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Yes	Yes
HDMI version Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	2.1	2.1
DisplayPort version Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED No source recorded.	1.4a	Not provided
USB-C connection Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Yes	Yes
USB-C display input Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Source port and cable must support DisplayPort Alt Mode. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Both the source port and cable must support DisplayPort Alt Mode. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Yes	Yes
Headphone output Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Yes	Yes

Dimensions with standDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Manufacturer dimensions with stand, shown width × height × depth. Stand depth is not panel thickness and excludes additional cable clearance. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Manufacturer assembled dimensions with stand; MSI lists W × D × H, shown here width × height × depth. Stand depth excludes additional cable clearance; this is not panel thickness. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	714 × 473 × 318 mm (width × height × depth, with stand)	1195 × 410 × 328 mm (width × height × depth, with stand)
Stand depthDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Manufacturer dimensions with stand, shown width × height × depth. Stand depth is not panel thickness and excludes additional cable clearance. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Manufacturer assembled dimensions with stand; MSI lists W × D × H, shown here width × height × depth. Stand depth excludes additional cable clearance; this is not panel thickness. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	318 mm	328 mm
VESA mounting pattern Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	100 × 100 mm	100 × 100 mm
Height-adjustable stand Sources MSI MPG 321CURX QD-OLED Manufacturer specification · The supplied stand has a published height adjustment range of 0–100 mm. This is travel, not the assembled monitor height. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · The supplied stand has a published height adjustment range of 0–100 mm. This is travel, not the assembled monitor height. MSI MPG 491CQPX QD-OLED — exact model datasheet	Yes	Yes
Stand height travel Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Adjustment travel, separate from assembled monitor height. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Listed adjustment travel, separate from the overall assembled height. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	100 mm	100 mm
Stand adjustmentDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Tilt −5° to +15°; swivel ±30°; no pivot; height travel 100 mm	Tilt −5° to +20°; swivel ±30°; height travel 100 mm; no portrait pivot
Stand tiltDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	−5° to 15°	−5° to 20°
Swivel-adjustable stand Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Listed swivel range −30° to 30°. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Listed swivel range −30° to 30°. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Yes	Yes
Portrait pivot Sources MSI MPG 321CURX QD-OLED Manufacturer specification · MSI lists pivot as N/A. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — exact model datasheet	No	No
Dimensions without standDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	714 × 423 × 123 mm (width × height × depth)	1195 × 372 × 190 mm (width × height × depth)
Net weightDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Manufacturer net weight; the datasheet does not state whether the stand is included. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · MSI does not say whether this is with or without the stand. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	8.4 kg	10.6 kg
Gross shipping weightDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	11.9 kg	16.4 kg
Kensington lock slot Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Yes	Yes
Package contentsDifferent Sources MSI MPG 321CURX QD-OLED Manufacturer specification · Package contents can vary by country; check the listing. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Package contents may vary by country; check the listing. MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Monitor and stand; HDMI 2.1 cable, DisplayPort 1.4a cable, C13 power cord, quick guide, USB Type-B to A cable and 4 VESA wall-mount screws	HDMI 2.1 cable, DisplayPort 1.4a cable, USB Type-B to A cable, C13 power cord, quick guide, 4 VESA wall-mount screws

Supplied power arrangement Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Internal power board; 100–240 V, 50/60 Hz AC input	Internal power board
Mains power input Sources MSI MPG 321CURX QD-OLED No source recorded. MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — manufacturer specifications MSI MPG 491CQPX QD-OLED — exact model datasheet	Not provided	100–240 V AC, 50/60 Hz

Gaming Intelligence desktop app Sources MSI MPG 321CURX QD-OLED Manufacturer specification · MSI app for keyboard-and-mouse control of monitor modes. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification · Manufacturer-listed software control; requires the USB upstream connection and a supported PC. MSI MPG 491CQPX QD-OLED — exact model datasheet	Yes	Yes
OLED maintenance features Sources MSI MPG 321CURX QD-OLED Manufacturer specification · MSI does not itemise the individual care functions. MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — exact model datasheet	OLED Care 2.0	OLED Care 2.0
Panel cooling Sources MSI MPG 321CURX QD-OLED Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — exact model datasheet	Fanless (graphene film with custom heatsink)	Fanless (graphene film with custom heatsink)
On-screen controls Sources MSI MPG 321CURX QD-OLED No source recorded. MSI MPG 491CQPX QD-OLED Manufacturer specification MSI MPG 491CQPX QD-OLED — exact model datasheet	Not provided	5-way joystick

Show unverified (2)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.

Specifications without verified values for either product
Manufacturer warranty Sources MSI MPG 321CURX QD-OLED MSI's MPG 321CURX datasheet has no warranty row; check regional warranty terms with MSI. · Manufacturer specification MSI MPG 321CURX QD-OLED — exact model specifications MSI MPG 491CQPX QD-OLED No source recorded.	Not listed by the manufacturer	Not provided
Built-in speakers Sources MSI MPG 321CURX QD-OLED No source recorded. MSI MPG 491CQPX QD-OLED The datasheet lists only a headphone output under audio ports and does not explicitly state whether speakers are built in. · Manufacturer specification MSI MPG 491CQPX QD-OLED — exact model datasheet	Not provided	Not listed by the manufacturer

First product manufacturer source Second product manufacturer source

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Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.