Edit: Okay I left the card running stock speeds overnight because of the problems I had when OCing. I set the fan at 90% and the card seemed to be staying pretty cool. When I woke up the comp had rebooted.
WTF
Could this be my PSU and not the card? It's a 450w that i've had for a few years. Full system with a 5850 is supposed to draw <350w.
I'm also getting 85C at stock speeds when fan control is set to auto. When manually set to 65% fan speed it goes down to 65C at load.
end edit.
This is a non reference card (they make reference and non-reference)
I'm getting 273Mh/s on stock speeds on guiminer. When I tried to ramp it up it crashed, with higher OC's crashing sooner.
seems like I might as well have saved $40 and gone with a 5830.
does anyone have any advice?
what sort of boost have people seen from down clocking memory?
should I try bumping up voltage from stock 1.09 to see if that makes OC stable?
What's the talk about the ATI stream SDK? Do I just go to the ATI download site and install it for a boost?