1920x1080 gaming question

Currently I game on 1680x1050 resolution with my XFX 9800 GT since that's the native resolution of my LCD monitor. If I were to buy one of those 22" Full HD 1920x1080 monitors being sold and switched to 1920x1080 resolution would I suffer very significant degradation in game performance for the games I play?

While we're talking about 1920x1080 gaming, in your honest opinion, what video card would be the absolute minimum for decent a gameplay experience at the 1920x1080?

If it helps at all, here are my pertinent PC details:

E7300 Intel C2D

Asus P5QL-Pro

XFX 9800 GT

4Gb OCZ DDR2 800mhz RAM

Windows XP SP3

250Gb Seagate HD

FSP 600w Epsilon PSU

Well for ur 1st question,

Yes there will be a bit of performance loss, is the 9800GT u have 512 or 1GB, you will need to look at 1GB for a minimum now, higher resolution means gpu is more stressed.

You might also not be able to run games on high anymore with the 9800GT, also AA and AF will need to be reduced, the demands are too much for maximum grafics.

For ur 2nd question,

I do game at 1920*1200 (a tad bit higher, on a 24"), and currently I have 260 (216) in SLI (its 896MB but putting them together helps). At the moment I would say the minimum is the GTS250 1GB version.

Hope that helps, enjoy ur new monitor.