Comparison between:
- 27" KOORUI S2721PM
- 27" AOC U27G4 Power Saving Edition
- 27" Lenovo Legion R27qe Gen 2
- 31.5" AOC U32G4
Brand, series, model
Information about the brand, series, model and model aliases.
| KOORUI S2721PM | AOC U27G4 Power Saving Edition | Lenovo Legion R27qe Gen 2 | AOC U32G4 | |
 |  |  |  | |
| Model year | 2025 | 2025 | 2025 | 2025 |
Display
Information about the main characteristics of the display - panel, backlight, resolution, refresh rate, etc.
| Size class | 27 in | 27 in | 27 in | 31.5 in |
| Diagonal | 685.8 mm 68.58 cm 27 in 2.25 ft | 685.655 mm 68.5655 cm 26.9943 in 2.2495 ft | 685.8 mm 68.58 cm 27 in 2.25 ft | 801 mm 80.1 cm 31.5354 in 2.628 ft |
| Width | 596.736 mm 59.6736 cm 23.4935 in 1.9578 ft | 596.736 mm 59.6736 cm 23.4935 in 1.9578 ft | 596.736 mm 59.6736 cm 23.4935 in 1.9578 ft | 698.112 mm 69.8112 cm 27.4847 in 2.2904 ft |
| Height | 335.664 mm 33.5664 cm 13.2151 in 1.1013 ft | 335.664 mm 33.5664 cm 13.2151 in 1.1013 ft | 335.664 mm 33.5664 cm 13.2151 in 1.1013 ft | 392.688 mm 39.2688 cm 15.4602 in 1.2883 ft |
| Panel type | IPS | IPS | IPS | IPS |
| Panel bit depth | 10 bits | 10 bits (8 bits + FRC) | 10 bits (8 bits + FRC) | 10 bits |
| FRC | No | Yes | Yes | No |
| Colors | 1073741824 colors 30 bits | 1073741824 colors 30 bits | 1073741824 colors 30 bits | 1073741824 colors 30 bits |
| Aspect ratio | 1.778:1 16:9 | 1.778:1 16:9 | 1.778:1 16:9 | 1.778:1 16:9 |
| Resolution | 2560 x 1440 pixels Quad HD (QHD) / 1440p | 3840 x 2160 pixels Ultra HD (UHD) / 4K / 2160p | 2560 x 1440 pixels Quad HD (QHD) / 1440p | 3840 x 2160 pixels Ultra HD (UHD) / 4K / 2160p |
| Pixel pitch | 0.233 mm 0.0233 cm 0.0092 in 0.0008 ft | 0.155 mm 0.0155 cm 0.0061 in 0.0005 ft | 0.233 mm 0.0233 cm 0.0092 in 0.0008 ft | 0.182 mm 0.0182 cm 0.0072 in 0.0006 ft |
| Pixel density | 109 ppi 42 ppcm | 163 ppi 64 ppcm | 109 ppi 42 ppcm | 139 ppi 55 ppcm |
| Display area | - | 89.07 % | 89.24 % | 90.22 % |
| Backlight | Mini LED | W-LED | W-LED | W-LED |
| sRGB | 100 % | 99 % | 99 % | 99 % |
| Adobe RGB (1998) | 99 % | - | - | - |
| DCI P3 | 97 % | 95 % | 90 % | 95 % |
| Brightness | 550 cd/m² | 350 cd/m² | 400 cd/m² | 350 cd/m² |
| Peak brightness | 1000 cd/m² | 450 cd/m² | - | 450 cd/m² |
| Static contrast | 1000 : 1 | 1000 : 1 | 1000 : 1 | 1000 : 1 |
| Dynamic contrast | 1000000 : 1 | 80000000 : 1 | 3000000 : 1 | 80000000 : 1 |
| HDR | DisplayHDR 1000 | DisplayHDR 400 | HDR10 | HDR10 DisplayHDR 400 |
| Horizontal viewing angle | 178 ° | 178 ° | 178 ° | 178 ° |
| Vertical viewing angle | 178 ° | 178 ° | 178 ° | 178 ° |
| Minimum response time | 1 ms 0.0010 s | 1 ms 0.0010 s | 1 ms 0.0010 s | 1 ms 0.0010 s |
| Average response time | - | - | 4 ms 0.0040 s | - |
| Coating | Anti-glare/Matte | Anti-glare/Matte (3H) | Anti-glare/Matte | Anti-glare/Matte (3H) |
| Local dimming zones - 1152 | Response time - 0.5 ms (MPRT - Motion Picture Response Time) | Response time - 0.5 ms (MPRT - Motion Picture Response Time) | Response time - 0.5 ms (MPRT - Motion Picture Response Time) |
3D
3D displays use various technologies to achieve a 3D effect. Each of these technologies has its own advantages and drawbacks.
| 3D | - | No | No | No |
Frequencies
Information about the horizontal and vertical refresh rates/frequencies.
| Horizontal frequency (digital) | - | 30 kHz - 360 kHz | - | 30 kHz - 360 kHz |
| Vertical frequency (digital) | 48 Hz - 200 Hz | 48 Hz - 160 Hz | 48 Hz - 200 Hz | 48 Hz - 160 Hz |
| - | Dual mode with user-defined key 4K @ 160 Hz FHD @ 320 Hz | - | Dual mode 4K @ 160 Hz FHD @ 320 Hz |
Power supply and consumption
Information about the power supply and consumption, energy efficiency class, etc.
| 110V | 110 V - 120 V | 100 V - 120 V | 100 V - 120 V | 100 V - 120 V |
| 220V | 220 V - 240 V | 220 V - 240 V | 220 V - 240 V | 220 V - 240 V |
| Alternating current frequency | 50 Hz - 60 Hz | 50 Hz - 60 Hz | 50 Hz - 60 Hz | 50 Hz - 60 Hz |
| Electric current (A) | - | 1.5 A | - | 1.5 A |
| Power consumption (off) | 0.3 W | 0.5 W | 0.3 W | 0.3 W |
| Power consumption (sleep) | 0.5 W | 0.5 W | 0.5 W | 0.5 W |
| Power consumption (average) | - | 34 W | 22 W | 40 W |
| Power consumption (maximum) | - | - | 65 W | - |
Dimensions, weight and color
Information about the dimensions and the weight of the specific model with and without stand as well as the colors, in which it is offered to the market.
| Width | 613 mm 61.3 cm 24.1339 in 2.0112 ft | 613.9 mm 61.39 cm 24.1693 in 2.0141 ft | 613.1 mm 61.31 cm 24.1378 in 2.0115 ft | 716.1 mm 71.61 cm 28.1929 in 2.3494 ft |
| Height | - | 366.3 mm 36.63 cm 14.4213 in 1.2018 ft | 366.1 mm 36.61 cm 14.4134 in 1.2011 ft | 424.3 mm 42.43 cm 16.7047 in 1.3921 ft |
| Depth | - | 51.3 mm 5.13 cm 2.0197 in 0.1683 ft | 45 mm 4.5 cm 1.7717 in 0.1476 ft | 61.4 mm 6.14 cm 2.4173 in 0.2014 ft |
| Weight | - | 4.28 kg 9.44 lbs | 4 kg 8.82 lbs | 5.72 kg 12.61 lbs |
| Width with stand | 613 mm 61.3 cm 24.1339 in 2.0112 ft | 613.9 mm 61.39 cm 24.1693 in 2.0141 ft | 613.1 mm 61.31 cm 24.1378 in 2.0115 ft | 716.1 mm 71.61 cm 28.1929 in 2.3494 ft |
| Height with stand | 432 mm 43.2 cm 17.0079 in 1.4173 ft | 386 mm 38.6 cm 15.1969 in 1.2664 ft | 383.2 mm 38.32 cm 15.0866 in 1.2572 ft | 461.5 mm 46.15 cm 18.1693 in 1.5141 ft |
| Depth with stand | 214 mm 21.4 cm 8.4252 in 0.7021 ft | 239.9 mm 23.99 cm 9.4449 in 0.7871 ft | 258.8 mm 25.88 cm 10.189 in 0.8491 ft | 269.6 mm 26.96 cm 10.6142 in 0.8845 ft |
| Weight with stand | 6.25 kg 13.78 lbs | 5.87 kg 12.94 lbs | 5.9 kg 13.01 lbs | 8.22 kg 18.12 lbs |
| Box width | - | 822 mm 82.2 cm 32.3622 in 2.6969 ft | 685 mm 68.5 cm 26.9685 in 2.2474 ft | 980 mm 98 cm 38.5827 in 3.2152 ft |
| Box height | - | 481 mm 48.1 cm 18.937 in 1.5781 ft | 485 mm 48.5 cm 19.0945 in 1.5912 ft | 527 mm 52.7 cm 20.748 in 1.729 ft |
| Box depth | - | 162 mm 16.2 cm 6.378 in 0.5315 ft | 162 mm 16.2 cm 6.378 in 0.5315 ft | 226 mm 22.6 cm 8.8976 in 0.7415 ft |
| Box weight | - | 9.47 kg 20.88 lbs | 7.5 kg 16.53 lbs | 11.37 kg 25.07 lbs |
| Stand depth | 214 mm 21.4 cm 8.4252 in 0.7021 ft | 239.9 mm 23.99 cm 9.4449 in 0.7871 ft | 258.8 mm 25.88 cm 10.189 in 0.8491 ft | 269.6 mm 26.96 cm 10.6142 in 0.8845 ft |
| Colors | Black | Black and Red | Black | Black and Red |
Ergonomics
Information about the ergonomic functions - height adjustment, swivel angles, tilt angles, etc.
| VESA mount | Yes | Yes | Yes | Yes |
| VESA interface | 100 x 100 mm | 100 x 100 mm | 100 x 100 mm | 100 x 100 mm |
| Removable stand | Yes | Yes | Yes | Yes |
| Height adjustment | Yes | Yes | Yes | Yes |
| Height adjustment range | 110 mm 11 cm 4.3307 in 0.3609 ft | 130 mm 13 cm 5.1181 in 0.4265 ft | 135 mm 13.5 cm 5.315 in 0.4429 ft | 130 mm 13 cm 5.1181 in 0.4265 ft |
| Landscape/portrait pivot | Yes | Yes | Yes | Yes |
| Left pivot | 90 ° | 90 ° | 90 ° | 90 ° |
| Right pivot | 90 ° | 90 ° | 90 ° | 90 ° |
| Left/right swivel | Yes | Yes | Yes | Yes |
| Left swivel | 30 ° | 30 ° | 30 ° | 20 ° |
| Right swivel | 30 ° | 30 ° | 30 ° | 20 ° |
| Forward/backward tilt | Yes | Yes | Yes | Yes |
| Forward tilt | 5 ° | 5 ° | 5 ° | 5 ° |
| Backward tilt | 20 ° | 23 ° | 22 ° | 23 ° |
Camera
Many contemporary desktop monitors and smart TV sets have built-in cameras.
| Camera | No | No | No | No |
Connectivity
Available connectivity ports, slots and interfaces.
| Connectivity | 2 x HDMI 2.1 1 x DisplayPort 1.4 1 x 3.5 mm Audio Out | 2 x HDMI 2.1 (DSC) 1 x DisplayPort 1.4 (DSC) 1 x 3.5 mm Audio Out | 1 x HDMI 2.1 1 x DisplayPort 1.4 1 x 3.5 mm Audio Out | 2 x HDMI 2.1 1 x DisplayPort 1.4 1 x 3.5 mm Audio Out |
| - | - | - | High-bandwidth Digital Content Protection (HDCP) |
Features
Some additional functional features of the model.
| Features | AMD FreeSync Premium Dynamic Image Clarity Fast IPS Flicker-free technology Low Blue Light Qunatum Dot Color | 3-sided frameless design 6-axis Color Adjustment Adaptive-Sync technology AMD FreeSync technology AOC G-Menu AOC Game Color AOC Shadow Control Dynamic Crosshair Dynamic Color Boost (DCB) Dynamic Contrast Ratio (DCR) Fast IPS Flicker-free technology Frame Counter Game Mode Game Tone Adjustment HDR Mode Low Blue Light Low Input Lag Motion Blur Reduction Sync (MBR Sync) Overdrive Picture-by-Picture Picture-in-Picture | 3-sided NearEdgeless design Adaptive-Sync technology Fast IPS Flicker-free technology Lenovo Artery Natural Low Blue Light | 3-sided frameless design Adaptive-Sync technology AMD FreeSync Premium AOC G-Menu AOC Game Color AOC Shadow Control Crosshair Dynamic Color Boost (DCB) Dynamic Contrast Ratio (DCR) Fast IPS Flicker-free technology Frame Counter Game Mode Game Tone Adjustment HDR Mode Low Blue Light (Hardware Solution) Low Input Lag Motion Blur Reduction (MBR) Overdrive Picture-by-Picture Picture-in-Picture |
Certificates, standards and licenses
Licenses from regulatory agencies, standards, certificates.
| Certificates, standards and licenses | - | CCC CE CEL CH RoHS FCC Win11 | RoHS TÜV Rheinland Eye Comfort Certification (3-star) | CCC CE CEL CH RoHS FCC Win11 |
Operating and storage conditions
There are certain requirements for the environmental conditions, in which the display should be used and stored in order to function properly.
| Operating temperature | - | 0 °C - 40 °C 32 °F - 104 °F | 0 °C - 45 °C 32 °F - 113 °F | 0 °C - 40 °C 32 °F - 104 °F |
| Operating humidity | - | 10 % - 85 % | 10 % - 80 % | 10 % - 85 % |
| Operating altitude | - | 3657.6 m 12000 ft | 5000 m 16404.2 ft | 5000 m 16404.2 ft |
| Storage temperature | - | -25 °C - 55 °C -13 °F - 131 °F | -20 °C - 60 °C -4 °F - 140 °F | -20 °C - 55 °C -4 °F - 131 °F |
| Storage humidity | - | 5 % - 93 % | 5 % - 95 % | 5 % - 93 % |
| Storage altitude | - | 12192 m 40000 ft | 12192 m 40000 ft | 12192 m 40000 ft |
Accessories
Often the packaging of desktop monitors and smart TV sets includes accessories for them.
| Accessories | HDMI cable | DisplayPort cable HDMI cable | DisplayPort cable | DisplayPort cable HDMI cable |
Additional features
Information about other features.
| Additional features | Anti-theft stand lock slot | Anti-theft stand lock slot - Kensington | Anti-theft stand lock slot - Kensington | Anti-theft stand lock slot - Kensington |
| KOORUI S2721PM | AOC U27G4 Power Saving Edition | Lenovo Legion R27qe Gen 2 | AOC U32G4 |