Originally Posted by TheBirdman74;12271129
I think I have found it to be 449 being the max fsb this board would even boot at..
can any of you suggest how much volts should I use? i had it set at 1.375v but I reckon its too much? any suggested volts for these processors ?
You should drop CPU multiplier to thr lowest value of 6x to isolate being held down by Vcore..
Then upp FSB and when system doesn't boot or its unstable with that FSB freq x6 multi then add vNB and vFSB voltages by 0.02V one at the time and try to boot again..
When you get to the point that system doesn't boot/or unstable and that adding vMB and vFSB doesn't help any more then you have hit FSB wall of your system..
Once you have found max FSB freq for your system test it:Testing methodology:1. But first test these with 6x multi with P95 LARGE FFT for at least 6h (12h is ideal)..2.
If you pass reboot to BIOS upp your Vcore and set MULTI to 7x..3.
If it doesn't boot keep adding Vcore untill it does..4.
Then in Windows test your max FSB x7 =3.xxGHz with IBT 20runs w/ max RAM and if you crash then just upp Vcore and test it again..5.
If you pass P95 LARGE FFT & IBT 20 runs then you're ROCK SOLID..For more than 450MHz
to be P95 LARGE FFT stable you need to tune CPU GTL voltages
for each pair of cores for example if 1st core
errors in P95 you tune (try both to lower or upp GTL) GTL voltage 0/2
(that's GTL for 1st and 3rd core)..
If 2nd core
errors then tune CPU GTL 1/3
(for 2nd and 4th core-worker in P95)..
Only by tunning CPU GTL you will be stable in P95 LARGE FFT for 6h or more when pushing your C2Q over 450MHz FSB..
Tunning CPU GTL is a matter of trial and error..
Actual GTL voltage is calculated by vFSB x0.xx (GTL multiplier) so for example you use 1.30V FSB x0.63 = 0.819V..
Usually Qads like actual GTL voltages in between 0.790 and 0.840V when OC'd over 450MHz FSB..Keep your vNB under 1.50V, vFSB under 1.40V and Vcore under 1.40V for 24/7 usage..KEEP YOUR CORE TEMPS UNDER 75C IN ANY STRESS TEST..
CHEERS..Edited by KingT - 2/5/11 at 8:59am