Newegg.com ZOTAC 8600GT
$64 with $20 MIR and $8.25 shipping for $53 after MIR.

I've got a dead HD 3850 here with a functional core PWM, going to mod the card and use it as a powersupply to power the core on the 8600GT If I need more than 1.8v then I suppose I'll either use an old motherboard or try and beef up the onboard PWM.