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Asus P5N32-E Overclocking Guide - Page 291

post #2901 of 5659
As we all know, the G0's don't need as much vCore as there older B3 cousins to operate, though will obviously still require more vCore than my previous E6600 B2 down to there being twice as many cores.

Anyway, with this in mind I have tried everything, but can't even get past POST with the following settings;

FSB: 1333
Multiplier: x9
RAM: Unlinked (800Mhz) 5-5-5-12 2T
CPU vCore: 1.6v (1.55v actual)
1.2 HT: 1.4v
NorthBridge: 1.6v (1.55v actual)
SouthBridge: 1.55v
CPU VTT: 1.55v (1.68v actual)

Spread spectrums, CPU features and unused onboard devices all disabled as normal. PCI-Express bus's all locked as normal.

The computer boots fine and brings up the POST screen, but then seems to freeze before it displays my HDD's and optical drives. I can't even enter the BIOS unless I reset the CMOS back to stock. Thank god for the overclocking profiles feature in the BIOS is all I can say.

Now there's no way in hell that the CPU isn't getting enough vCore, the RAM is operateing at stock frequencies, so doesn't need more voltage. All I can think of is that there is some sort of issue with the 1205 BIOS for the P5N32-E SLi that I'm useing. Has anyone else here had issues clocking their Quads with this BIOS?

Useful help shall be duely rewarded as always.
post #2902 of 5659
Quote:
Originally Posted by t4ct1c47 View Post
As we all know, the G0's don't need as much vCore as there older B3 cousins to operate, though will obviously still require more vCore than my previous E6600 B2 down to there being twice as many cores.

Anyway, with this in mind I have tried everything, but can't even get past POST with the following settings;

FSB: 1333
Multiplier: x9
RAM: Unlinked (800Mhz) 5-5-5-12 2T
CPU vCore: 1.6v (1.55v actual)
1.2 HT: 1.4v
NorthBridge: 1.6v (1.55v actual)
SouthBridge: 1.55v
CPU VTT: 1.55v (1.68v actual)

Spread spectrums, CPU features and unused onboard devices all disabled as normal. PCI-Express bus's all locked as normal.

The computer boots fine and brings up the POST screen, but then seems to freeze before it displays my HDD's and optical drives. I can't even enter the BIOS unless I reset the CMOS back to stock. Thank god for the overclocking profiles feature in the BIOS is all I can say.

Now there's no way in hell that the CPU isn't getting enough vCore, the RAM is operateing at stock frequencies, so doesn't need more voltage. All I can think of is that there is some sort of issue with the 1205 BIOS for the P5N32-E SLi that I'm useing. Has anyone else here had issues clocking their Quads with this BIOS?

Useful help shall be duely rewarded as always.
Your CPU VTT is too high, i have found with Quads on this board that they like a lower CPU VTT, try 1.35v and you should be fine.
 
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post #2903 of 5659
Quote:
Originally Posted by Mhill2029 View Post
Your CPU VTT is too high, i have found with Quads on this board that they like a lower CPU VTT, try 1.35v and you should be fine.
Lowering VTT didn't help, if you could PM me you're settings for 3.0Ghz I'd really appreciate it.

I've since tried 1300FSB, which allowed me to pass POST, but wouldn't boot into Windows. I then lowered the FSB further to 1250 and am now running along fine at 2.81Ghz. I'm going to try various FSB's between 1250 and 1300 sometime tonight, until I find my maximum stable FSB. Either way, it's starting to look like a new motherboard could be in order.
post #2904 of 5659
I had the exact same problem with 1205, I reverted back to 1103 and could then hit 3.00 Ghz (9x333) but nothing more.
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post #2905 of 5659
Quote:
Originally Posted by DonNiger View Post
I had to rise HT to 1.6 to OC.
Thanks for that. What are the rest of your voltages at? Also I have been noticing a heat increase by adding more HT volts is that what you saw too?



On a unrelated note. My bios hasnt been remembering my saved oc profiles. Also for a little while there I couldnt enter bios it would hang for a sec at the bios splash screen and then head onto windows (where it was stable?? and yes the delete key works fine). Anybody have any ideas? I suspect the cmos battery but a little confirmation never hurts.
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post #2906 of 5659
Quote:
Originally Posted by t4ct1c47 View Post
(SNIP!)
Yes, run your RAM unlinked and manually set it to 800Mhz. In unlinked mode your RAM won't go above what you've set it to while you raise FSB.
I've had some different experience with this. Even when unlinked, I set memory to 800, but the actual speed (displayed in gray, below) wants to "snap" to a ratio (the closest possible ratio) no matter what, so I will only get 800 if it is an exact ratio to FSB. Therefore, I keep an eye on the gray speed to make certain I'm getting a minimum of 800, but not so far over I get unstable memory. You can see in my CPU-Z link that my RAM is actually running at 864, not 800.
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post #2907 of 5659
Quote:
Originally Posted by t4ct1c47 View Post
Lowering VTT didn't help, if you could PM me you're settings for 3.0Ghz I'd really appreciate it.

I've since tried 1300FSB, which allowed me to pass POST, but wouldn't boot into Windows. I then lowered the FSB further to 1250 and am now running along fine at 2.81Ghz. I'm going to try various FSB's between 1250 and 1300 sometime tonight, until I find my maximum stable FSB. Either way, it's starting to look like a new motherboard could be in order.
Ive found 8x works better than 9x..

Bios: 1203



8x @1800 fsb (3.6 ghz) orthos stable ~2hrs @~1.43 Vcore.

I still like my E6850 much much much much better...

Much better oc, much lower temps
    
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post #2908 of 5659
Thanks nuclearjock, I'll start faffing about on the x8 multiplier sometime tonight to see if I get any better results.

Rep +1

To be honest, I always thought that this board didn't like high FSB's with Quads.
post #2909 of 5659
Thread Starter 
It doesn't. The highest I've seen to date (other than Nuclearjock above) is about 380.
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post #2910 of 5659
Yea... it all falls within a very small margin which is interesting... 350 to 380 is where all of those who find their limits end up.
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