This kind of rig is more likley to be posted at general usage pc's and not high performence at least not anymore... if you get my point lol ^^;
If not, heres a clarification:
It's not a very updated [or rather, a little outdated] build anymore... but it will still perform pretty good on medium settings in games for quite some time.. but in two years or so the newer games will not run so smoothly on medium and you'll need to lower settings to low/lowest, but thats in a year/two years time... till then its a medium/high settings setup for games.
it'll hold up fine, and google/search TF for Radeon X800 pipelines unlock, or mod or any sort of word you can think of... I don't think we should do searchings for you when its so simple. [though usualy I will but right now im crancky.]