Help!! Intel Q8400 Overclock

[atlantis1990]

I have a Intel Q8400 overclocked at 3.2Ghz initially it was clocked @ 2.66Ghz. currently i am running my voltages are currently at:
V-Core: 1.3 volts
FSB termination: 1.2 volts
CPU PLL:1.5 volts
CPU Reference : 0.76 volts

The motherboard i have is the Gigabyte EP45-UD3P motherboard suggested by my friend and Anandtech. What I don't know is if the voltage i have are applied to high or low...obviously i is currently stable but i would like help to reach higher clock speeds if possible.

 

[TurtleCrusher]

What do you need help with? Just keep pushing the FSB higher.

Also, make sure your ram can go at those speeds and make sure it has enough voltage.

 

[atlantis1990]

What i don't know currently is if I'm pushing to much voltage through the cores at that frequency

 

[TurtleCrusher]

1.3V is fine. I'm right there with you.

Seriously, just push the FSB until it is unstable and tweak it after you reach your max.

 

[Shmee]

Originally posted by: atlantis1990
What i don't know currently is if I'm pushing to much voltage through the cores at that frequency

well, I suppose you are technically applying voltage across But 1.3 is fine. Up to 1.35 should also be fine, as long as temps are good. Whats your cooling?

If on stock, I would get a new cooler if you are serious. But as long as temps are good, you can go higher, but then you may need to adjust voltages for stability. Also, vcore isnt the only one to consider. there is also the FSB term/VTT, and that looks good for now, but is required to be higher at high FSB's, though the UD3P has a reputation for being very good for high FSBs.

 

[maluckey]

I'm running the UD3R, not the UD3P, but both are capable of running all-day at 450-460 FSB on a Q840-Q9400 without any skill invloved. Just set and forget. Make sure that the Voltage tracking stays under 1.3v and that you stay within the range of your RAM. I run an almost silent setup at 465 x 7, with 5:6 RAM ratio on a UD3R.

I found that going past that made me have to go to 500 mHz FSB to recoup the RAM speed that I lost by a lower ratio. I also required waaaaayyyy more tweaking.

 

[atlantis1990]

So far with Vcore being 1.3 i get unstable system with 3.6 ghz. i have managed to do 3.4 ghz but my tems ran into the 70's so i cooled it back down to 3.2ghz and i seem to be running stable and the voltage remains the same at 1.3

 

[error8]

Vcore on this chip is fine until 1.45 V !!!! These do not have the 1.36 V limit, like the Q9XXX series. So as long as you can keep it cool enough, you can pump that voltage like crazy. You might also want to play with FSB termination voltage and make sure that the ram handles your FSB. Even so, you won't get over 3.6 ghz anyway. Q8400 is not an overclocking wonder.

 

[error8]

Originally posted by: atlantis1990
So far with Vcore being 1.3 i get unstable system with 3.6 ghz. i have managed to do 3.4 ghz but my tems ran into the 70's

Tjunction for your cpu is at 100 C. So if you got 70 C with RealTemp, then you are some 30 C until Tjunction, which is totally safe. Even 80C should be safe, IMO.

Hell, my q6700 goes at 79 C with a 90 C Tjunction, so I'm only 11 C until danger and I don't have a problem with that.

 

[atlantis1990]

Originally posted by: error8

Originally posted by: atlantis1990
So far with Vcore being 1.3 i get unstable system with 3.6 ghz. i have managed to do 3.4 ghz but my tems ran into the 70's

Tjunction for your cpu is at 100 C. So if you got 70 C with RealTemp, then you are some 30 C until Tjunction, which is totally safe. Even 80C should be safe, IMO.

Hell, my q6700 goes at 79 C with a 90 C Tjunction, so I'm only 11 C until danger and I don't have a problem with that.

Thanks