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Dell S2240M
BenQ GL2055
Acer V223WL
ViewSonic VX2270Smh
ViewSonic VSD220
Dell S2240M 21 inch LCD Monitor
BenQ GL2055 20 inch Monitor
Acer V223WL AJObd LCD Monitor
ViewSonic VX2270Smh-LED Monitor
ViewSonic VSD220 Monitor
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Release Date
Sep 2012
Oct 2012
Sep 2012
Sep 2012
Sep 2012
Screen Size
21.5 inch
20.0 inch
22.0 inch
21.5 inch
21.5 inch
Monitor Type
LED Monitor
LED
LED-backlit LCD monitor / TFT active matrix
LED-backlit LCD monitor / TFT active matrix
TFT Active Matrix LED
Aspect Ratio
Widescreen (16:9)
16:9
Widescreen - 16:10
Widescreen - 16:9
16:9
Brightness
250.0 cd/m^2
200.0 cd/m^2
250.0 cd/m^2
250.0 cd/m^2
250.0 cd/m^2
Contrast Ratio
1000:1
700:1
100000000:1 (dynamic)
1000:1 / 30000000:1 (dynamic)
1000:1
Dot Pitch
0.248 mm
0.276 mm
Max. Resolution
1920 x 1080
1600 x 900
1680 x 1050
1920 x 1080
1920 x 1080
Response Time
7.0 ms
5.0 ms
5.0 ms
7.0 ms
5.0 ms
Color Depth
16.7 million colors
16.7 million colors
16.7 million colors
16.7 million colors
16.7 million colors
Viewable Picture Size
21.5 in.
22.0 in.
21.5 in.
21.5 in.
Average Rating
 4.8 stars
 4.3 stars
 4.4 stars
 4.0 stars
 3.0 stars