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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
Max refresh
Maximum manufacturer-listed refresh rate, not measured motion clarity. The port-specific limits below matter; HDMI and DisplayPort can support different modes.
AOC AG276QKD2500 Hz
Manufacturer specification · At the native panel resolution. Manufacturer lists 500 Hz. Available modes depend on input, cable and source. Listed vertical input range: 48 -500 Hz.
Manufacturer specification · At the native panel resolution. Manufacturer lists 360 Hz. Available modes depend on input, cable and source. Listed vertical input range: 48 -360Hz.
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 500 Hz. Available modes depend on input, cable and source. Listed vertical input range: 48 -500 Hz.
Manufacturer specification · At the native panel resolution. Manufacturer lists 360 Hz. Available modes depend on input, cable and source. Listed vertical input range: 48 -360Hz.
AOC AG276QKD2HDMI: HDMI 2.1 x 2; DisplayPort: DisplayPort 2.1 x 1; USB Type upstream: 1 x USB-B; USB type downstream: 2 x USB-A; Audio Output: 1x Audio out
AOC Q27G4SDRHDMI: HDMI 2.1 x 2; DisplayPort: DisplayPort 1.4 x 1; USB Type upstream: 1 x USB-B; USB type downstream: 2 x USB-A
Sources
AOC AG276QKD2
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.
AOC AG276QKD2VESA Certified DisplayHDR True Black 500
AOC Q27G4SDRVESA Certified DisplayHDR True Black 400
Sources
AOC AG276QKD2
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-listed HDR formats or certification. This alone does not establish real-scene HDR quality, local dimming or measured peak brightness.
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 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.
Dimensions with stand
AOC AG276QKD2608.1 × 380.8–525.6 × 240 mm (width × height × depth, with stand)
AOC Q27G4SDR609.3 × 407.4-537.4 × 207.7 mm (width × height × depth, with stand)
Sources
AOC AG276QKD2
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 AG276QKD2608.1 x 357.7 × 74.4
AOC Q27G4SDR609.3 x 357.7 x 58.2
Sources
AOC AG276QKD2
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 AG276QKD2Not verified
AOC Q27G4SDRNot verified
Sources
AOC AG276QKD2
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
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Typical brightness
AOC AG276QKD2Not verified
AOC Q27G4SDRNot verified
Sources
AOC AG276QKD2
The model page lists 1000 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 HDR500 TrueBlack feature tile separately mentions "a peak brightness of up to 500 nits". · Manufacturer specification
The model page lists 1000 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. The panel is certified DisplayHDR True Black 400. · Manufacturer specification
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Power when off (W)
AOC AG276QKD2Not verified
AOC Q27G4SDR0.3
Sources
AOC AG276QKD2
No source recorded for this side.
AOC Q27G4SDR
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.
Rear RGB lighting
AOC AG276QKD2Light FX (RGB)
AOC Q27G4SDRNot verified
Sources
AOC AG276QKD2
Manufacturer specification · Named in AOC's introduction and RGB LIGHT FX feature tile (rear lighting); the specification table has no Light FX row for this model.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Weight with stand
AOC AG276QKD2Not verified
AOC Q27G4SDR6.87 kg
Sources
AOC AG276QKD2
AOC lists a 5.9 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
Response time, HDR support and colour figures are manufacturer claims with different conditions; they do not establish independent motion or image-quality results.
Manufacturer specification · Manufacturer resolution notation: 2560x1440. See the separate refresh-mode conditions for any lower-resolution configurations.
Manufacturer specification · Manufacturer resolution notation: 2560x1440. 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 HDR500 TrueBlack tile separately mentions a peak brightness of up to 500 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 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-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.
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 500 Hz. Available modes depend on input, cable and source. Listed vertical input range: 48 -500 Hz.
Manufacturer specification · At the native panel resolution. Manufacturer lists 360 Hz. Available modes depend on input, cable and source. Listed vertical input range: 48 -360Hz.
Listed refresh modes and input limitsDifferentSources
AOC AG276QKD2
Manufacturer specification · At the native panel resolution. Manufacturer lists 500 Hz. Available modes depend on input, cable and source. Listed vertical input range: 48 -500 Hz.
Manufacturer specification · At the native panel resolution. Manufacturer lists 360 Hz. Available modes depend on input, cable and source. Listed vertical input range: 48 -360Hz.
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.
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
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.
AOC lists a 5.9 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
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.
Dimensions without stand (W × H × D, mm)DifferentSources
AOC AG276QKD2
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; USB-B upstream cable: 1x USB-B to A 1.8m; Power Cable: True
Typical / normal operating powerDifferentSources
AOC AG276QKD2
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 · Named in AOC's introduction and RGB LIGHT FX feature tile (rear lighting); the specification table has no Light FX row for this model.
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 (3)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 AG276QKD2
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 1000 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 HDR500 TrueBlack feature tile separately mentions "a peak brightness of up to 500 nits". · Manufacturer specification
The model page lists 1000 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. The panel is certified DisplayHDR True Black 400. · 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.