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Q8200 - Cant go past 3.1GHz / 443FSb on x38 ?? - Page 3

post #21 of 27
Thread Starter 
Quote:
Originally Posted by somedudecro;12271197 
You will need to up MCH and CPU VTT voltages for higher FSBs.

whats MCH and VTT standing for here? I cant see any such settings in my bios ..confused.gif
post #22 of 27
Quote:
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..

GOOD LUCK..

CHEERS..
Edited by KingT - 2/5/11 at 8:59am
     
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CPUMotherboardGraphicsRAM
E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
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post #23 of 27
Your mobo can do over 600 fab. The CPU can do over 500fsb easy as well. You have a fsb/mem strap issue. Manually set mch strap to 400 set NBv to 1.38v and set ram speeds with auto timing and slight increase in voltage. wink.gif

*you should be running at least 1.32v for VTT or FSBv as well
post #24 of 27
Quote:
Originally Posted by TheBirdman74;12271255 
whats MCH and VTT standing for here? I cant see any such settings in my bios ..confused.gif

your north bridge volts and fsb volts, maybe labled like that in your bios. do what KingT suggests.
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q9300 @ 3.4ghz Gigabyte EP45-UD3L EVGA GTX 460 1gb 8GB g.Skill DDR2 
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(13 items)
 
  
CPUMotherboardGraphicsRAM
q9300 @ 3.4ghz Gigabyte EP45-UD3L EVGA GTX 460 1gb 8GB g.Skill DDR2 
Hard DriveOSMonitorPower
Crucial C300, Caviar Black 640gb, Caviar Green 2TB Win 7 pro Dell sp2309w Corsair HX650w 
Case
Cooler Master CM690 II Advanced 
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post #25 of 27
Thread Starter 
I just broke the wall, thanks for the help KingT and CL3P20, and the rest of OCN..yell me what do you guys think of the volts I am running @, are they safe enough?

I can run stable at 7x 465 fsb (3.2ghz) with the following settings, but cant get to post at 470fsb

nb fsb strap = 400mhz
dram frequency = ddr 3 1395mhz
cpu voltage = 1.375v
Fsb termination = 1.34
Dram voltage = 1.6v
nb voltage = 1.45
cpu GTL voltage 0.65X

I would love to go more, but seems I am stuck...

wish i had my asus p45 lol...but hey, am okay with it if I cant go more... if anyone thinks they could help me run more fsb,t then I am up for it tongue.gif . right now tuning the volts to reduce my temps/extend lifespan...

thanks again for all the help.. smile.gif
Edited by TheBirdman74 - 2/5/11 at 8:12pm
post #26 of 27
Thread Starter 
now i cant login to windows, keep getting BSOD frown.gif any help would be appreciated
post #27 of 27
Raise your FSBv a bit more.. 1.36-1.38v and see if it helps.. otherwise I am guessing your CPU needs more vcore. *quads take a bit more FSBv to stabilize than a dual core..you are safe to scale it up to the +side of 1.4v for testing..just lower it back down to ~1.34-1.38v if it does not help.
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