@MK, do your assignment and do yourself a favor.
Dual Core Gaming Fix Guide:
http://www.hardforum.com/showthread.php?t=983781
get the> AMD X2 Dual Core Driver:
http://ucguides.savagehelp.com/Quake...e.htm#KB896256
btw.. have you tried running one application in one core using the affinity?
also 7800 is NOT the latest
- g