ROG Strix XG259CMS monitor, identified in the ASUS UK catalogue. Specifications below retain the manufacturer’s configuration and interface conditions.
Specifications checked 17 Oct 2026.
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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 SIDE4 topics
SELECTED TOPIC
01 / 04
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 25G4KUR400 Hz
Manufacturer specification · At the native panel resolution. Manufacturer lists 420Hz (OC, 400Hz native). The overclocked setting is listed separately and is not a guaranteed stock mode. Available modes depend on input, cable and source. Listed vertical input range: HDMI:48~240Hz; DP:48~400Hz; DP OC:48~420Hz(H).
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 420Hz (OC, 400Hz native). The overclocked setting is listed separately and is not a guaranteed stock mode. Available modes depend on input, cable and source. Listed vertical input range: HDMI:48~240Hz; DP:48~400Hz; DP OC:48~420Hz(H).
AOC 25G4KURHDMI: HDMI 2.0 x 2; DisplayPort: DisplayPort 1.4 x 1; USB Type upstream: 1 x USB-B; USB type downstream: 4 x USB-A; Audio Output: 1x Audio out
ASUS ROG Strix XG259CMSDisplayPort 1.4x 1 HDMI (v2.0)x 1 USB-Cx 1 (DP Alt Mode) Earphone jack: Yes USB-C Power Delivery: 7.5W
Sources
AOC 25G4KUR
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 25G4KUR560.1 × 380.6–498.5 × 207.6 mm (width × height × depth, with stand)
ASUS ROG Strix XG259CMSPhys. Dimension with stand (W x H x D): 55.8 x 49.2 x 21.8 cm (21.97" x 19.37" x 8.58")
Sources
AOC 25G4KUR
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 estimated dimensions; original ordering, units and regional qualifications retained. See source for stand configuration.
A size or weight trade-off; it does not establish the better product.
Missing or non-comparable evidence (53)
Listed refresh modes and input limits
AOC 25G4KUR420Hz (OC, 400Hz native)
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
Manufacturer specification · At the native panel resolution. Manufacturer lists 420Hz (OC, 400Hz native). The overclocked setting is listed separately and is not a guaranteed stock mode. Available modes depend on input, cable and source. Listed vertical input range: HDMI:48~240Hz; DP:48~400Hz; DP OC:48~420Hz(H).
Evidence is missing or conflicting on at least one side. This is not a verified difference.
USB-C connection
AOC 25G4KURNot verified
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
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.
HDR formats / certification
AOC 25G4KURVESA Certified DisplayHDR 400
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
Manufacturer specification · Manufacturer-listed HDR formats or certification. This alone does not establish real-scene HDR quality, local dimming or measured peak brightness.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
VESA mounting pattern
AOC 25G4KUR100x100
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
Manufacturer specification · Match the screw pattern, screw dimensions, product weight and mount load rating; the pattern alone does not verify a safe mount.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Built-in speakers
AOC 25G4KURNot verified
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
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 25G4KURNot verified
ASUS ROG Strix XG259CMS400 cd/m²
Sources
AOC 25G4KUR
AOC's UK page lists 350 cd/m² under 'Brightness in nits' without stating whether it is typical, sustained or peak output or giving a window size; the figure is kept as brightness_claim. · Manufacturer specification
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Display colour depth
AOC 25G4KUR16.7 Million
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
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 25G4KUR88.1
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
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 25G4KUR92.0
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
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 25G4KUR121.0
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
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.
Power when off (W)
AOC 25G4KUR0.3
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
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.
Typical / normal operating power
AOC 25G4KUR24 W
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
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 25G4KURAOC UK documentation
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
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.
MPRT response-time claim
AOC 25G4KUR0.3 ms
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
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.
GtG response-time claim
AOC 25G4KURNot verified
ASUS ROG Strix XG259CMS1ms(GTG)
Sources
AOC 25G4KUR
AOC's UK specification lists 'Response time GtG 1 ms' (and its Fast IPS text says up to 1ms GtG), while the same page's feature section is headed '0.5ms Response time GTG'. The page contradicts itself, so the claim is left unresolved. · Manufacturer specification
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Standby power (W)
AOC 25G4KUR0.3
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
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.
Listed warranty period
AOC 25G4KUR3 years
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
Manufacturer specification · Check the exact model, purchase market, proof-of-purchase requirements and full manufacturer terms; this is not a cross-border warranty guarantee.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Dimensions without stand (W × H × D, mm)
AOC 25G4KUR560.1 x 324.8 × 52.1
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
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 25G4KURNot verified
ASUS ROG Strix XG259CMSNot verified
Sources
AOC 25G4KUR
AOC lists a 4.77 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
The advertised 420 Hz setting is an overclock. The listed native configuration is 400 Hz; the higher setting needs the supported configuration and is not guaranteed stock operation.
Compatibility and maximum operating modes depend on the source’s stated hardware, firmware and connection requirements; manufacturer figures are not independent measurements.
Manufacturer specification · Manufacturer resolution notation: 1920x1080. See the separate refresh-mode conditions for any lower-resolution configurations.
AOC's UK page lists 350 cd/m² under 'Brightness in nits' without stating whether it is typical, sustained or peak output or giving a window size; the figure is kept as brightness_claim. · Manufacturer specification
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 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 420Hz (OC, 400Hz native). The overclocked setting is listed separately and is not a guaranteed stock mode. Available modes depend on input, cable and source. Listed vertical input range: HDMI:48~240Hz; DP:48~400Hz; DP OC:48~420Hz(H).
Manufacturer specification · At the native panel resolution. Manufacturer lists 420Hz (OC, 400Hz native). The overclocked setting is listed separately and is not a guaranteed stock mode. Available modes depend on input, cable and source. Listed vertical input range: HDMI:48~240Hz; DP:48~400Hz; DP OC:48~420Hz(H).
AOC's UK specification lists 'Response time GtG 1 ms' (and its Fast IPS text says up to 1ms GtG), while the same page's feature section is headed '0.5ms Response time GTG'. The page contradicts itself, so the claim is left unresolved. · Manufacturer specification
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.
Digital Signal Frequency: HDMI: 30~255 KHz (H) / 48~240Hz (V) USB-C, DisplayPort: 350~350 KHz (H) / 48~310 Hz (V)
Inputs, connections and versionsDifferentSources
AOC 25G4KUR
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 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 estimated dimensions; original ordering, units and regional qualifications retained. See source for stand configuration.
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 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 · 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.
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
Weight with standSources
AOC 25G4KUR
AOC lists a 4.77 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
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
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.