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| Poor | Average | Good | Excellent | |
|---|---|---|---|---|
 Screen size | 21.5 in Best: Acer UM.PB1EE.A01 Screen size: 282 in | |||
 Response time | 1 ms Best: JVC LM-H191 Response time: 0.01 ms | |||
 Brightness | 250 cd/m² Best: DynaScan DS321LR4 Brightness: 25000 cd/m² | |||
| Screen size | 21.5 in |
|---|---|
| Brightness | 250.0 cd/m² |
| Aspect ratio | 16:9 |
| HDMI ports quantity | 1 |
|---|---|
| VGA (D-Sub) ports quantity | 1 |
| Swivel | no |
|---|---|
| Tiltable | yes |
| Cable lock slot | no |
| EnergyStar | yes |
|---|
| Colour of product | Black |
|---|---|
| Panel design | Flat |
| Built-in camera | no |
| Built-in speakers | yes |
| Supported graphics resolutions | 1920x1080 |
|---|---|
| Refresh rate | 75.0 Hz |
| HD type | Full HD |
| Display number of colours | 16.78 million colours |
| Dynamic contrast ratio | 100000000:1 |
| Display technology | LED |
| Panel type | TN+Film |
| Response time | 1.0 ms |
| 3D support (3D-Ready) | no |
|---|---|
| VESA mount | yes |
| Energy efficiency class | A |
|---|---|
| Power consumption (standby) | 0.4 W |
| Power consumption (typical) | 17.0 W |
The Acer KG221Q is one of the cheapest monitors in the market that offers an extended refresh rate and FreeSync
Loses out on size and colour accuracy, but it’s still a high-contrast FreeSync gaming panel for a very reasonable price
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