View Full Version : evga 680i SLI and Core2Quad Q9550

02-22-10, 04:45 PM
Ok, I am now running my PC with a Q9550 on an evga 680i SLI T1, P33 BIOS. BIOS sets the speeds to 333x8.5=2.8Ghz. The multi won't go passed 8/8.5 which is obviously because this board isn't supposed to support this CPU. All four cores are enabled. My question is, has anyone ever successfully overclocked this CPU on this motherboard. OR, is there some kind of BIOS mod to unlock the 9x multiplier? I have included screenshots.

02-23-10, 11:22 PM
Okay, i just oc'ed it to 3.61Ghz (425x8.5) 1.336vcore. Tested with various games like Crysis, CoD4, Left 4 Dead 2, and GTA 4. All good so far, though I haven't run a Prime95 test. Check out the screenies.

02-24-10, 08:20 PM

02-27-10, 12:34 PM
The board supports the cpu just fine. You can't go over 8.5 because if you could that cpu would be a 9650;) Nice oc though, enjoy the sweet setup

03-01-10, 01:41 PM
thanks. I've had one freeze-up when I was playing left 4 dead 2 but my opinion is that that's a common problem with that game being sensitive to overclocking.

03-03-10, 06:52 PM
ya need to upgrade that soon!
our 8800's are ancient by today's standard

07-15-10, 02:44 AM
Hate to revive an old thread, but I have to say: No. It doesn't support the Q9550; at least not properly (for me).

Sure, it supports it on paper, and Dr.Nick is lucky enough to have only had one freeze. Me... not so much, and it's not even related to temps or, afaik, voltages (I have SpeedFan events set up and monitor the temperatures, and besides, I'm usually not doing anything of consequence when it freezes..sometimes not at the computer at all). I got freezes more often when overclocking, so I stopped overclocking entirely, and now I get them every 2-3 days instead of once or twice per day.

I haven't changed anything except the processor. I had no freezes at all, ever, with my E8500.

People have this problem with the 750i SLI as well. NVIDIA chipsets are bad news, and everybody knows it (just like everybody knows about the naming of the "glove compartment"...).

Maybe it's just my particular motherboard, an eVGA nForce 680i SLI. Oh, that's what you have, too...

Anyway, let this be a warning to those thinking of trying this combo. Your mileage may vary.. immensely. I'm using OCZ DDR2 800MHz RAM by the way, at stock settings (*everything* is at stock). Don't recall the exact model offhand.