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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
Listed refresh modes and input limits
Check the exact input, signal mode, source and cable. A connector version or supported timing does not guarantee every console mode, VRR setting or game frame rate.
AOC U27G4XMUHD 3840 × 2160 at 160 Hz / FHD 1920 × 1080 at 320 Hz (Dual Frame Mode)
Manufacturer specification · At the native panel resolution. Manufacturer lists 160 Hz. Available modes depend on input, cable and source. Listed vertical input range: FHD: 48-320Hz / UHD: 48-160Hz. The exact product page separately lists Full HD at 320 Hz in Dual Frame Mode; this is not 320 Hz at the native UHD resolution.
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 · At the native panel resolution. Manufacturer lists 160 Hz. Available modes depend on input, cable and source. Listed vertical input range: FHD: 48-320Hz / UHD: 48-160Hz. The exact product page separately lists Full HD at 320 Hz in Dual Frame Mode; this is not 320 Hz at the native UHD resolution.
Check the exact input, signal mode, source and cable. A connector version or supported timing does not guarantee every console mode, VRR setting or game frame rate.
AOC U27G4XMHDMI: HDMI 2.1 x 1; DisplayPort: DisplayPort 1.4 x 1; USB Type upstream: 1 x USB-B; USB type downstream: 4 x USB-A
AOC U27G4RHDMI: HDMI 2.1 x 2; DisplayPort: DisplayPort 1.4 x 1; USB Type upstream: 1 x USB-B; USB type downstream: 4 x USB-A; Audio Output: Headphone out (3.5mm)
Sources
AOC U27G4XM
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.
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.
Manufacturer specification · Manufacturer-listed HDR formats or certification. This alone does not establish real-scene HDR quality, local dimming or measured peak brightness.
Manufacturer specification · Manufacturer-listed HDR formats or certification. This alone does not establish real-scene HDR quality, local dimming or measured peak brightness.
Manufacturer specification · AOC does not state the window size or whether this is sustained or peak brightness; its DisplayHDR 1000 tile separately mentions peak brightness up to 1000 nits.
Check the exact configuration and source conditions for your use.
Display colour depth
AOC U27G4XM1.073B (8bits+FRC)
AOC U27G4R1.07 billion (10-bit HDMI/DP @120Hz)
Sources
AOC U27G4XM
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.
Check the exact configuration and source conditions for your use.
Colour space (Adobe RGB) CIE 1976 %
AOC U27G4XM96.5
AOC U27G4R93.4
Sources
AOC U27G4XM
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.
Check the exact configuration and source conditions for your use.
Colour space (DCI-P3) CIE 1976 %
AOC U27G4XM98.0
AOC U27G4R95.9
Sources
AOC U27G4XM
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.
Check the exact configuration and source conditions for your use.
Colour space (sRGB) CIE 1976 %
AOC U27G4XM151.8
AOC U27G4R124.7
Sources
AOC U27G4XM
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.
Check the exact configuration and source conditions for your use.
Typical / normal operating power
AOC U27G4XM45 W
AOC U27G4R34 W
Sources
AOC U27G4XM
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. Source mode: typical.
A size or weight trade-off; it does not establish the better product.
Standby power (W)
AOC U27G4XM0.3
AOC U27G4R0.5
Sources
AOC U27G4XM
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.
A size or weight trade-off; it does not establish the better product.
Dimensions with stand
AOC U27G4XM614 × 386.6–516.6 × 240 mm (width × height × depth, with stand)
AOC U27G4R613.9 × 386.0–516.0 × 227.6 mm (width × height × depth, with stand)
Sources
AOC U27G4XM
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 dimensions in the stated orientation; allow additional room for cables and movement. A listed height range is retained without inferring an adjustment travel.
A size or weight trade-off; it does not establish the better product.
Dimensions without stand (W × H × D, mm)
AOC U27G4XM614 x 366.4 × 59.4
AOC U27G4R613.9 x 366.31 × 51.28
Sources
AOC U27G4XM
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 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.
USB-C connection
AOC U27G4XMNot verified
AOC U27G4RNot verified
Sources
AOC U27G4XM
The inspected exact-model specification does not establish this feature. It has not been inferred from another model or from an omitted field. · Manufacturer specification
The inspected exact-model specification does not establish this feature. It has not been inferred from another model or from an omitted field. · Manufacturer specification
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Built-in speakers
AOC U27G4XMNot verified
AOC U27G4RNot verified
Sources
AOC U27G4XM
The inspected exact-model specification does not establish this feature. It has not been inferred from another model or from an omitted field. · Manufacturer specification
The inspected exact-model specification does not establish this feature. It has not been inferred from another model or from an omitted field. · Manufacturer specification
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Typical brightness
AOC U27G4XMNot verified
AOC U27G4RNot verified
Sources
AOC U27G4XM
The model page lists 1200 cd/m² under Brightness in nits, without identifying typical sustained output, peak window size or a measurement mode. The previous typical-brightness wording was unsupported. AOC's DisplayHDR 1000 feature tile separately mentions "super high peak brightness up-to 1000 nits". · Manufacturer specification
The model page lists 400 cd/m² under Brightness in nits, without identifying typical sustained output, peak window size or a measurement mode. The previous typical-brightness wording was unsupported. · Manufacturer specification
Evidence is missing or conflicting on at least one side. This is not a verified difference.
MPRT response-time claim
AOC U27G4XMNot verified
AOC U27G4RUHD 0.5ms / FHD 0.3 ms
Sources
AOC U27G4XM
No source recorded for this side.
AOC U27G4R
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.
The headline maximum spans different resolution modes: UHD 3840 × 2160 at 160 Hz / FHD 1920 × 1080 at 320 Hz (Dual Frame Mode). The faster lower-resolution mode does not deliver the same pixel detail as the native panel mode.
The headline maximum spans different resolution modes: UHD@160Hz / FHD@320Hz Dual Frame Monitor. The faster lower-resolution mode does not deliver the same pixel detail as the native panel mode.
Manufacturer specification · Manufacturer resolution notation: 3840x2160. See the separate refresh-mode conditions for any lower-resolution configurations.
Manufacturer specification · Manufacturer resolution notation: 3840x2160 / 1920x1080 Dual Frame Monitor. See the separate refresh-mode conditions for any lower-resolution configurations.
Manufacturer specification · AOC does not state the window size or whether this is sustained or peak brightness; its DisplayHDR 1000 tile separately mentions peak brightness up to 1000 nits.
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-listed HDR formats or certification. This alone does not establish real-scene HDR quality, local dimming or measured peak brightness.
Manufacturer specification · Manufacturer-listed HDR formats or certification. This alone does not establish real-scene HDR quality, local dimming 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 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.
Colour space (Adobe RGB) CIE 1976 %DifferentSources
AOC U27G4XM
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 · At the native panel resolution. Manufacturer lists 160 Hz. Available modes depend on input, cable and source. Listed vertical input range: FHD: 48-320Hz / UHD: 48-160Hz. The exact product page separately lists Full HD at 320 Hz in Dual Frame Mode; this is not 320 Hz at the native UHD resolution.
Listed refresh modes and input limitsDifferentSources
AOC U27G4XM
Manufacturer specification · At the native panel resolution. Manufacturer lists 160 Hz. Available modes depend on input, cable and source. Listed vertical input range: FHD: 48-320Hz / UHD: 48-160Hz. The exact product page separately lists Full HD at 320 Hz in Dual Frame Mode; this is not 320 Hz at the native UHD resolution.
UHD 3840 × 2160 at 160 Hz / FHD 1920 × 1080 at 320 Hz (Dual Frame Mode)
UHD@160Hz / FHD@320Hz Dual Frame Monitor
GtG response-time claimSources
AOC U27G4XM
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 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 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.
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 1; DisplayPort: DisplayPort 1.4 x 1; USB Type upstream: 1 x USB-B; USB type downstream: 4 x USB-A
HDMI: HDMI 2.1 x 2; DisplayPort: DisplayPort 1.4 x 1; USB Type upstream: 1 x USB-B; USB type downstream: 4 x USB-A; Audio Output: Headphone out (3.5mm)
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 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 · 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 · Pivot angle as listed on AOC's UK product page, with its tolerance. The page types the leading minus sign as a soft hyphen.
Dimensions without stand (W × H × D, mm)DifferentSources
AOC U27G4XM
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 dimensions in the stated orientation; allow additional room for cables and movement. A listed height range is retained without inferring an adjustment travel.
HDMI cable: 1.8; Displayport cable: 1.8; USB-B upstream cable: 1x USB-B to A 1.8m; Power Cable: True
HDMI cable: 1.8; Displayport cable: 1.8; Power Cable: True
Typical / normal operating powerDifferentSources
AOC U27G4XM
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. 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 · Manufacturer power figure under the stated operating mode; real use, brightness, connected USB devices and charging load can differ.
Manufacturer specification · Check the exact model, purchase market, proof-of-purchase requirements and full manufacturer terms; this is not a cross-border warranty guarantee.
Manufacturer specification · Check the exact model, purchase market, proof-of-purchase requirements and full manufacturer terms; this is not a cross-border warranty guarantee.
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.
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 (4)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.
Specifications without verified values for either product
USB-C connectionSources
AOC U27G4XM
The inspected exact-model specification does not establish this feature. It has not been inferred from another model or from an omitted field. · Manufacturer specification
The inspected exact-model specification does not establish this feature. It has not been inferred from another model or from an omitted field. · Manufacturer specification
The inspected exact-model specification does not establish this feature. It has not been inferred from another model or from an omitted field. · Manufacturer specification
The inspected exact-model specification does not establish this feature. It has not been inferred from another model or from an omitted field. · Manufacturer specification
The model page lists 1200 cd/m² under Brightness in nits, without identifying typical sustained output, peak window size or a measurement mode. The previous typical-brightness wording was unsupported. AOC's DisplayHDR 1000 feature tile separately mentions "super high peak brightness up-to 1000 nits". · Manufacturer specification
The model page lists 400 cd/m² under Brightness in nits, without identifying typical sustained output, peak window size or a measurement mode. The previous typical-brightness wording was unsupported. · 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.