I use it as a monitor. I am a developer, don't game much, but it is sharp as a tack. Make SURE to connect it through VGA and use the PC option "dot by dot" for Picture setting otherwise the pixel alignment sucks.
Yes it is. I'm a PC gamer and it is wonderful. Playing Dead Space 3 right now, and it is killer. I came from a 32" 720 where my max resolution was 1360 x 768 and now I'm playing 1920 x1080 ...So nice..no ghosting, no lag, ...NICE. Oh and I don't use the VGA...I use a DVI to HDMI cable. DVI plugged into my card and into HDMI 1 on the TV