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11hr 38min stable - Page 3

post #21 of 27
Thread Starter 
I'm thinking that the CPU/NB voltage is causing high temps in my machine, If I wan't 2600+ I need the voltage, but combined with the voltage that needs to make my CPU stable it just gets too hot, I backed my CPU/NB down to 1.35 and upped my CPU voltage to 1.55 and my temps went down 4C
post #22 of 27
Quote:
Originally Posted by blkdoutgsxr View Post
I'm thinking that the CPU/NB voltage is causing high temps in my machine, If I wan't 2600+ I need the voltage, but combined with the voltage that needs to make my CPU stable it just gets too hot, I backed my CPU/NB down to 1.35 and upped my CPU voltage to 1.55 and my temps went down 4C
CPU/NB(Memory Controller) is inside the CPU. Increasing CPU/NB Volt. will give you higher CPU temp
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post #23 of 27
If you have a decent motherboard why not start your OC from scratch and find your max FSB? Put some of the stress of the OC on the motherboard and lower the settings on your CPU.

With a high FSB you can achieve higher NB freqs without the needed voltage (or at least as much).

I know it sounds like a step back but better doing this correctly than trying to troubleshoot months later.

Not sure if you missed it, use prime95 large ftt tests if you're failing after 8+ hrs in prime95. At least it'll allow you make 2 tweaks a day instead of 1.

I'm also thinking about backing down to 2400. 2600 ghz is taking 1.4v's to stay stable at 3.6 ghz (cpu) at 1.42v giving me a temp of 56 under load. CPU-NB voltages seem to effect temps much more drastically than CPU volts.

I'm almost done with my 24 hr run. And than next week I get to do it all over to find my max settings for 2400 nb freq (for my summer setting).
Edited by evilferret - 1/15/11 at 3:23pm
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post #24 of 27
Thread Starter 
Quote:
Originally Posted by evilferret View Post
If you have a decent motherboard why not start your OC from scratch and find your max FSB? Put some of the stress of the OC on the motherboard and lower the settings on your CPU.

With a high FSB you can achieve higher NB freqs without the needed voltage (or at least as much).

I know it sounds like a step back but better doing this correctly than trying to troubleshoot months later.

Not sure if you missed it, use prime95 large ftt tests if you're failing after 8+ hrs in prime95. At least it'll allow you make 2 tweaks a day instead of 1.

I'm also thinking about backing down to 2400. 2600 ghz is taking 1.4v's to stay stable at 3.6 ghz (cpu) at 1.42v giving me a temp of 56 under load. CPU-NB voltages seem to effect temps much more drastically than CPU volts.

I'm almost done with my 24 hr run. And than next week I get to do it all over to find my max settings for 2400 nb freq (for my summer setting).
I had it stable using the fsb and everyone said thats retarded and why not just use the multiplier... LOL I think I'm close so I'm done starting from scratch... It's taken me 3 days of solid testing to get this far because I've been keeping tables on everything.... I think that I'll hit 3990 very soon
post #25 of 27
It really depends how much you want to learn and do.

This is my first OC in almost a decade? Back than FSB was all we had (well all I had).

Playing with multiplier and voltages is a ton easier and faster to settle on a stable setting IMO.

Playing with FSB is messing around with almost all settings between the motherboard and the CPU/RAM so it takes more finesse.

You can get one of those weird "stable" systems that feel slower since so many variables changed.

Since I found mosfet heatsinks for my motherboard I'm going to play with the FSB to try to lower the multiplier and voltages on my other components.

Just for kicks I pushed my FSB by 20 (from 200-220) with a voltage increase on NB and I'm running prime95 right now. I'm expecting to crash at any moment though.

Crashed only a few mins in. I think I could stabilize with a few more volts but the whole point of FSB tweaking for me is to use lower volts/freq's for other components.
Edited by evilferret - 1/15/11 at 4:29pm
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post #26 of 27
You worker stopped in 640K test I'm pretty sure it is memory related but could be NB.

Small fft's wont help you with this one as the 640K tests dont run except in blends, correct me if i'm wrong though!

Good luck
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post #27 of 27
Quote:
Originally Posted by Casey Ryback View Post
You worker stopped in 640K test I'm pretty sure it is memory related but could be NB.

Small fft's wont help you with this one as the 640K tests dont run except in blends, correct me if i'm wrong though!

Good luck
You can run custom tests to simulate the tests you need.

I usually do a pass of 512 and than from a 2000-4000 for 30-1hr each depending how much I want to stress it.

Here's a link with more info

http://www.overclock.net/general-pro...-settings.html
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