The Xclio and any of the sub $50 THN models from FSP work well for a single graphics card gaming rig unless you have an 8800 or 2900. In fact, a 300W or 350W model is enough for heavy overclocking if the card isn't plugged into the power supply. And every PSU review should reference these two...
Impressions:
+ Great AI
+ Great damage model
+ Good particle effects
+ Great enemy placement
+ Looks good and performs much better with DX8 shaders
- Bloated installer
- Bland environment
- Generic sound effects
- Cheesy intro movie
- Really needs 1 gig of RAM for best shaders...