Graphics help!

BirKy

Silver Level Poster
I generally use my 42 inch LCD TV as my computer screen at 1900 resolution. I was wondering if this has an detrimental effects concerning the graphics or if it would be worth getting a smaller screen to play on (despite not really having the room to put it anywhere.)

I'm currently looking at getting a gaming rig with SLI 580's in, to try and get the best possible experience whilst gaming within my budget, would this work on my TV screen or is it a bit overkill? (or better on a smaller screen for that matter) I am not really into trying to work on several screens. Currently using a gtx460 and it doesnt half stutter.
 
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