Originally posted by: Teetu
i'm thinking about upgrading from an x800 xl too. I know I will be paying very little to upgrade, but it seems like I will be getting an increase of ~10fps in most games. Does that seem correct?
Your fps should increase 30% stock vs. stock, and more like 35% overclocked vs. overclocked, since the XT overclocks slightly better than the XL. So in games where you got 30 fps with the XL, you should get 40+ fps with the XT.
However, if you use vsync (a must to avoid tearing), the differences are more dramatic. With vsync+triple buffering in most modern games on a LCD, you are always at 30, 45, or 60 fps. So in a scene where you would get 44 fps without vsync+triple buffering, you would get 30 fps once you turn vsync+triple buffering on. If you can increase your fps from 44 to 60+, you will get 60 fps once you turn vync on. So a 32% increase in 'native' fps (from 44 to 60) turns into a 100% increase in fps with vsync on (from 30 to 60). This is the issue I was facing in games, and upgrading from the XL to the XT effectively gave me a 100% increase in minimum fps for many games.
If you aren't bothered by tearing when vsync is off, then this upgrade may not be worth it for you.