A 26.5-inch WOLED (4th Generation) monitor with a 2560 × 1440 panel and a listed 540 Hz native-resolution mode; AOC describes the panel as Tandem W-OLED with a four-layer stacked OLED architecture. Its specified depth with stand is 244.2 mm.
Specifications checked 28 Sept 2026.
Amazon links open search results. Check the exact variant, current price and availability with the retailer.
LG 27GX790B-B in its manufacturer-documented UK configuration. The complete source table retains its published display, connection, software and physical conditions.
Specifications checked 17 Oct 2026.
Amazon links open search results. Check the exact variant, current price and availability with the retailer.
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 SIDE4 topics
SELECTED TOPIC
01 / 04
Panel technology
Check the exact configuration and source conditions for your use.
AOC AGP277QKDCWOLED (4th Generation)
Manufacturer specification · AOC's overview describes a 26.5" Tandem W-OLED panel with a four-layer stacked OLED architecture. Panel technology alone does not establish tested image quality.
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.
Manufacturer specification · AOC's overview describes a 26.5" Tandem W-OLED panel with a four-layer stacked OLED architecture. Panel technology alone does not establish tested image quality.
AOC AGP277QKDCHDMI: HDMI 2.1 x 2; DisplayPort: DP 2.1 x 1 (UHBR 20); USB-C connectivity: USB-C 3.2 x 1 (DP alt mode, upstream, power delivery up to 65 W); USB type downstream: 3; Audio Output: Headphone out (3.5mm)
LG 27GX790B-Bhdmi: YES(2ea); displayport: YES(1ea); dp version: 2.1; usb-c: Yes; usb upstream port: YES(via USB-C); usb downstream port: YES(2ea/ver3.0); headphone output: 4-pole (Sound+Mic)
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer port counts and versions. Confirm source-device support, cable bandwidth and the exact mode; a connector name alone does not guarantee every advertised configuration.
AOC AGP277QKDC605.2 × 416.3–548.8 × 244.2 mm (width × height × depth, with stand)
LG 27GX790B-Bdimension with stand (w x h x d) [mm]: 605.2x527.6x220(Up)/605.2x397.6x220(Down)
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer dimensions in the stated orientation; allow additional room for cables and movement. A listed height range is retained without inferring an adjustment travel.
Manufacturer specification · AOC's UK page lists 'QHD@540Hz / HD@720Hz Dual Frame Monitor' for a 2560x1440 (QHD) panel. The 540 Hz mode is at the native QHD resolution; the 720 Hz figure applies only to the lower-resolution HD Dual Frame mode, not to the native panel resolution. Available modes depend on input, cable and source. Listed vertical input range: 48 -540 Hz.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
USB-C connection
AOC AGP277QKDCYes
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · The listed connections include USB-C or Thunderbolt. Video, data, upstream/downstream roles and charging power depend on the particular port.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
HDR formats / certification
AOC AGP277QKDCVESA Certified DisplayHDR True Black 500
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer-listed HDR certification from the specification table; the feature tile is headed HDR500 TrueBlack, although its body text uses generic DisplayHDR 500/1000 wording. This alone does not establish real-scene HDR quality or measured peak brightness.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
VESA mounting pattern
AOC AGP277QKDC100x100
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Match the screw pattern, screw dimensions, product weight and mount load rating; the pattern alone does not verify a safe mount.
Manufacturer specification · Manufacturer claims. Full-screen, HDR peak and different APL window sizes are separate conditions, not directly comparable luminance tests.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Display colour depth
AOC AGP277QKDC1.073B (10 bits)
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer colour specification under its stated colour space and measurement basis. Coverage and gamut volume are not interchangeable, and this is not an independent colour-accuracy measurement.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Colour space (Adobe RGB) CIE 1976 %
AOC AGP277QKDC95.9
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer colour specification under its stated colour space and measurement basis. Coverage and gamut volume are not interchangeable, and this is not an independent colour-accuracy measurement.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Colour space (DCI-P3) CIE 1976 %
AOC AGP277QKDC99.5
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer colour specification under its stated colour space and measurement basis. Coverage and gamut volume are not interchangeable, and this is not an independent colour-accuracy measurement.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Colour space (sRGB) CIE 1976 %
AOC AGP277QKDC150.9
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer colour specification under its stated colour space and measurement basis. Coverage and gamut volume are not interchangeable, and this is not an independent colour-accuracy measurement.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Maximum power (W)
AOC AGP277QKDC220.0
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer power figure under the stated operating mode; real use, brightness, connected USB devices and charging load can differ.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Power when off (W)
AOC AGP277QKDC0.3
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer power figure under the stated operating mode; real use, brightness, connected USB devices and charging load can differ.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Portrait pivot range
AOC AGP277QKDC−90° to 90° (±2° tolerance)
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Pivot angle as listed on AOC's UK product page, with its tolerance. The page types the leading minus sign as a soft hyphen.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Typical / normal operating power
AOC AGP277QKDC60 W
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer power figure under the stated operating mode; real use, brightness, connected USB devices and charging load can differ. Source mode: typical.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Specification market
AOC AGP277QKDCAOC UK documentation
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · UK and US retailer searches are provided separately. A UK specification does not prove identical US variants, included plugs, stock or cross-border warranty.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
GtG response-time claim
AOC AGP277QKDC0.03 ms
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer response-time claim; settings and transition method matter. GtG and MPRT values are different measures and are not independent motion-clarity results.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
RGB lighting
AOC AGP277QKDCLight FX (RGB)
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · AOC's UK specification table lists Light FX (RGB) with a check mark under Cabinet information; the page does not say where on the monitor the lighting is.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Standby power (W)
AOC AGP277QKDC0.5
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer power figure under the stated operating mode; real use, brightness, connected USB devices and charging load can differ.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Dimensions without stand (W × H × D, mm)
AOC AGP277QKDC605.2 × 351 × 62.8
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
Manufacturer specification · Manufacturer dimensions in the stated orientation; allow additional room for cables and movement. A listed height range is retained without inferring an adjustment travel.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Weight with stand
AOC AGP277QKDCNot verified
LG 27GX790B-BNot verified
Sources
AOC AGP277QKDC
AOC lists a 7.04 kg 'Net weight excl. package' next to a separate 'Product without stand' figure, but does not explicitly state that the net figure includes the stand; it is kept as reported_net_weight. · Manufacturer specification
A listed charging output reaches 65 W on the specified USB-C or Thunderbolt port. Match the laptop and cable to that port’s power and display capabilities.
The headline maximum spans different resolution modes: QHD@540Hz / HD@720Hz Dual Frame Monitor. The faster lower-resolution mode does not deliver the same pixel detail as the native panel mode.
Manufacturer specifications are claims, not independent measurements, current retailer stock or unstated regional compatibility. Unlisted units and capabilities remain unknown.
Manufacturer specification · Manufacturer resolution notation: 2560x1440. See the separate refresh-mode conditions for any lower-resolution configurations.
Manufacturer specification · AOC's overview describes a 26.5" Tandem W-OLED panel with a four-layer stacked OLED architecture. Panel technology alone does not establish tested image quality.
Manufacturer specification · Manufacturer claims. Full-screen, HDR peak and different APL window sizes are separate conditions, not directly comparable luminance tests.
Manufacturer specification · Manufacturer colour specification under its stated colour space and measurement basis. Coverage and gamut volume are not interchangeable, and this is not an independent colour-accuracy measurement.
Manufacturer specification · Manufacturer-listed HDR certification from the specification table; the feature tile is headed HDR500 TrueBlack, although its body text uses generic DisplayHDR 500/1000 wording. This alone does not establish real-scene HDR quality or measured peak brightness.
Manufacturer specification · Manufacturer colour specification under its stated colour space and measurement basis. Coverage and gamut volume are not interchangeable, and this is not an independent colour-accuracy measurement.
Manufacturer specification · Manufacturer colour specification under its stated colour space and measurement basis. Coverage and gamut volume are not interchangeable, and this is not an independent colour-accuracy measurement.
Manufacturer specification · Manufacturer colour specification under its stated colour space and measurement basis. Coverage and gamut volume are not interchangeable, and this is not an independent colour-accuracy measurement.
Manufacturer specification · Manufacturer display-table maximum, not a motion index. Input-specific modes/overclocking remain in original source fields. Original: 540
Manufacturer specification · AOC's UK page lists 'QHD@540Hz / HD@720Hz Dual Frame Monitor' for a 2560x1440 (QHD) panel. The 540 Hz mode is at the native QHD resolution; the 720 Hz figure applies only to the lower-resolution HD Dual Frame mode, not to the native panel resolution. Available modes depend on input, cable and source. Listed vertical input range: 48 -540 Hz.
Manufacturer specification · Manufacturer response-time claim; settings and transition method matter. GtG and MPRT values are different measures and are not independent motion-clarity results.
Manufacturer specification · Manufacturer port counts and versions. Confirm source-device support, cable bandwidth and the exact mode; a connector name alone does not guarantee every advertised configuration.
HDMI: HDMI 2.1 x 2; DisplayPort: DP 2.1 x 1 (UHBR 20); USB-C connectivity: USB-C 3.2 x 1 (DP alt mode, upstream, power delivery up to 65 W); USB type downstream: 3; Audio Output: Headphone out (3.5mm)
Manufacturer specification · The listed connections include USB-C or Thunderbolt. Video, data, upstream/downstream roles and charging power depend on the particular port.
Manufacturer specification · Manufacturer dimensions in the stated orientation; allow additional room for cables and movement. A listed height range is retained without inferring an adjustment travel.
Manufacturer specification · Match the screw pattern, screw dimensions, product weight and mount load rating; the pattern alone does not verify a safe mount.
Manufacturer specification · Pivot angle as listed on AOC's UK product page, with its tolerance. The page types the leading minus sign as a soft hyphen.
Manufacturer specification · Manufacturer dimensions in the stated orientation; allow additional room for cables and movement. A listed height range is retained without inferring an adjustment travel.
Manufacturer specification · Manufacturer power figure under the stated operating mode; real use, brightness, connected USB devices and charging load can differ. Source mode: typical.
Manufacturer specification · Manufacturer power figure under the stated operating mode; real use, brightness, connected USB devices and charging load can differ.
Manufacturer specification · Manufacturer power figure under the stated operating mode; real use, brightness, connected USB devices and charging load can differ.
Manufacturer specification · Manufacturer power figure under the stated operating mode; real use, brightness, connected USB devices and charging load can differ.
Manufacturer specification · AOC's UK specification table lists Light FX (RGB) with a check mark under Cabinet information; the page does not say where on the monitor the lighting is.
Manufacturer specification · UK and US retailer searches are provided separately. A UK specification does not prove identical US variants, included plugs, stock or cross-border warranty.
Show unverified (1)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.
Specifications without verified values for either product
Weight with standSources
AOC AGP277QKDC
AOC lists a 7.04 kg 'Net weight excl. package' next to a separate 'Product without stand' figure, but does not explicitly state that the net figure includes the stand; it is kept as reported_net_weight. · Manufacturer specification
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.
