Cant OC a Q6600 G0 on a GA-EP35-DS3P

uchacker111

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Jun 12, 2008
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I have been trying to OC my Q6600 G0 for several days now and I just can't get to OC at all. This is my first OC ever, and it is really disheartening. I have gone into the BIOS and raised the FSB to 333 x 9. I have tried setting the voltages manually and leaving them at auto. I have disabled speedstep and left it on. Nothing works. I have even just tried to increase the fsb to 275 = 2.47GHz and it won't do that either. My specs are:
GA-EP35-DS3P
Q6600 G0
2.5GB DDR2-667
Corsair TX650W PSU
ATI Radeon HD 3870 512MB GDDR4

Can anyone help me figure this out? I have tried to follow the same steps as described here: http://www.atomicmpc.com.au/forums.asp?s=2&c=27&t=481 and here: http://www.atomicmpc.com.au/forums.asp?s=2&c=27&t=496 with no luck. I think that it has something to do with my dual-bios, but I'm not sure
 

uchacker111

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Jun 12, 2008
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18,510
Yeah I tried all of your suggestions and It still didn't work. I have no idea what is wrong I really want to figure this out.
 

Andrius

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Aug 9, 2004
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If point 3 doesn't provide you with enough details to OC it's going to be tough to help you.

If you provide a step by step description of all the settings you changed and the specific values of the changes that don't work I can try to figure it out but if the above guied doesn't get you any overclock you are either doing something wrong or you are trying it all in one step. That's a general NO NO with overclocking.

For my Q6600 G0, 3.0GHz (9x333MHz) I needed to change 3 things in BIOS (aside from changing the FSB from 266MHz to 333MHz).
1. disable EIST/C1E (just until I found a stable minimum voltage at 3.0GHz)
2. apply manual voltage control to reduce the voltage to 1.225V
3. change the RAM ratio from 3.0 to 2.4 (333MHz x 2.4 = 800MHz).
Everything else was left at default values.

After you change the above do this :
Try 2.7GHz (9x300MHz) raise CPU Core voltage (Vcore) 1 notch at a time until it boots at this setting (stop if it doesn't boot and you have reached 1.4V Vcore)

If that doesn work reduce the multiplier to 8x and check at 2.4GHz (8x300MHz).
If that doesn't work also raise the (G)MCH and FSB 1 notch at a time (all combinations) until it boots. Don't overdo it (0.2V max).
If still nothing works you might have a bum overclocking chip on your hands.

Good luck.