Computer games is CG, not video. There's no noise problem to take care of, the upscaling, resolution matching, frame rate is all taken care by graphic card.

LCD monitor regardless of high or low end, IPS, TN or VA panel, there will be none video processor built in, unlike HDTV.

Resolution as high as 2560 x 1600 will not do any good to TV in such a small size, heck you wont even notice the extra pixel. But for graphic usage, text reading, you'll highly appreciate that extra bit of pixels.

If you said LCD monitor more high definition than LCD TV 1080p, then why we watch blue ray or DVD in LCD TV look more sharper than LCD monitor?

Careful, a guy with wierd english grammar could now come in ask u to go for anger management class. BTW, that guys has not shown up in a long time...

yes you can, but u lose all the video enhancement goodies u could get from a TV. Noise reduction, double/quadruple frame interpolation, black frame insertion, black corrector, color/contrast management from frame to frame, MPEG artefact reduction, all via onboard video processor. Name me one LCD Monitor that has at least 1 of these features built in.

I'm just telling what those device are designed to do the best job. No one says u cant use a kancil to pull a caravan. It's just that they are not designed to do so and the result wont be ideal.

Noise reduction, double/quadruple frame interpolation, black frame insertion, black corrector, color/contrast management from frame to frame, MPEG artefact reduction, all via onboard video processor. Name me one LCD Monitor that has at least 1 of these features built in.

True, there are standards and there are standards. Having a display calibrated to a standard, ensures that the director's intent is preserved and u r watching what he intended. However, there is no rule that u need to like it that way, u can adjust ur set any way u want...it is ur set!