make sure there are no bent pins in that 4th socket. I had the same problem when I upgraded to hex cores. Turns out I screwed up one socket beyound my ability to fix. I'm one of the few members of the 3p mafia.
yeah, I bought 4 @ $20 a piece. Then managed to screw up one of the sockets in the swap. Did you know 3 of them will still make the deadline on a 8101? Run a lot cooler than the 8386's. 36-40 in my unheated workshop crunching an 8101. Now if I could quit getting the 8018's on my 660ti I'd...
my 650ti gets 24k-25k folding just gpu, no cpu. have folded both windows and linux with v7 and saw little or no difference on gpu numbers. 660ti gets around 65k again just gpu no cpu folding.