I just got a gtx670 from my 5850 and it performs about 3x better in BF3, 3D Mark, but in SC2 it's not doing so well. I think my CPU may be bottlenecking so I'm trying to overclock it a bit. I been reading guides and threads all night and just tried it twice to get it to 3.8GHz, and both times my PC won't even start up until I reset CMOS. Can someone see what I did wrong? I keep seeing that 3.8GHz should be easy...Also is it bad for my comp everytime it can't start up due to overclocking?
BCLK: 181 x 21
Disabled Turbo, C1E, EIST
RAM was at 7-7-7-24, volt 1.5 (auto)
Vcore 1.3, vtt 1.15, pll 1.8, pch 1.1
Great news! I tried starting small this time and was able to so far achieve stability at 3.78Ghz. I know what I did wrong yesterday and it was due to the memory clock speed. I didn't realize that it was affected by the Bclock and didn't adjust memory multiplier accordingly, so I think it went to like 1800 Mhz and probably the reason I can't boot up at all.
Here are my current settings:
Bclock: 21 x 180 = 3.78Ghz
Turbo, 1E, 3E-6C (w/e those were), Hyperthread all disabled
Memory: 9-9-9-24. 1.66 Voltage. 2:8 multiplier = 1440Mhz
Vcore: 1.25V (same as stock Vcore)
Max Temp: 65C - Prime 95 with 10 mins so far
How does the three voltage value look to you guys? If I reduce VTT any more I will get BSOD on startup. I already reduced Vcore from 1.35V to 1.25V and haven't tried to go lower. Memory Volt is 1.65V and I don't have that value, so I chose 1.66V as some people did from other forums.
Thanks a lot for the help! I hope this speed upgrade will make a difference!