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Can't go past 3.5 on 925 - Page 2

post #11 of 35
You can see if you hitted the fsb wall by lowering the multiplier to a known stable frequency. If it crashes you've hit your fsb wall. On my old m3n78 pro upping the NB voltage gave me some extra room.

The 925 is an AM2 processor and C2 stepping, people with a 955/965 C2 stepping usually get about 3.7-3.8Ghz max, while most C3 chips can handle 4Ghz.
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post #12 of 35
Quote:
Originally Posted by nicksasa View Post
You can see if you hitted the fsb wall by lowering the multiplier to a known stable frequency. If it crashes you've hit your fsb wall. On my old m3n78 pro upping the NB voltage gave me some extra room.

The 925 is an AM2 processor and C2 stepping, people with a 955/965 C2 stepping usually get about 3.7-3.8Ghz max, while most C3 chips can handle 4Ghz.
^This.

Lower your multi to give you around 1.5-2GHz clock speed, up the HT-Ref until you find the max FSB. I don't think you'll have problems under at least 280 though, to be honest.

Keep your HT around 1800/2000 (whatever default speed is) by dropping the HT Multi when you go for proper OC, let the NB rise with it to 2400 or so. My wall was 3.5GHz core as an X4, I tried at it the other day by increading VCore to 1.492, NB to 1.22 and CPU-NB to 1.326, with the intention of lowering voltage in a fine tune later.

I managed 3710 with 2600 NB, stock RAM timings and frequency. (1066- 5-5-5-15)

I kept BSODing over that, so will play around more, but most C2's max at 3.7-3.8 anyway.
So I'm happy at 3.7.
 
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post #13 of 35
i got it to run stable but it not snappy is this rite


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post #14 of 35
Thread Starter 
I managed to boot into Windows with 3.7GHz, but I BSODed as soon as I started up Prime.

That was at 265*14 with 1.525Vcore, 1.22NB and 1.325 CPU NB. 3.6 seems to be stable at 1.5Vcore, but it gets into the 50C temp range, which doesn't really seem worth it.

Looks like I hit the max on this chip. Oh, well, I was planning on buying a 1090T in a couple weeks anyways.

Quote:
Originally Posted by mark4d View Post
i got it to run stable but it not snappy is this rite
Thats should allow you bump the FSB to at least 250MHz. Give it a shot and run Prime95 using 8K for 6h+. If that works, bump it even more while keeping your eye on RAM freq/timings, and temps, of course.
Edited by Primus - 2/5/11 at 11:14am
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post #15 of 35
Quote:
Originally Posted by Primus View Post
Looks like I hit the max on this chip. Oh, well, I was planning on buying a 1090T in a couple weeks anyways.
It's not propably the chip, but the FSB wall on the MOBO. 1055T's arent nowhere near that crappy.
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post #16 of 35
i got it running stable at 3.4 for 5 minn with these readings i had to bump the "cpu vid voltage" 1.25


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post #17 of 35
Thread Starter 
Can you go any higher than that? Have you stressed the CPU with Prime95?
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post #18 of 35
i just did the prime for about 5 min how long should i run it i used AOD for 5 min and prime 4 5min
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post #19 of 35
Quote:
Originally Posted by mark4d View Post
i just did the prime for about 5 min how long should i run it i used AOD for 5 min and prime 4 5min
prime95 about 12hours, leave it overnight. If it's still on when you wake up..

Congratulations, you've got a so far stable OC ;P
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post #20 of 35
Thread Starter 
Definitely leave it on overnight. Prime95 is time consuming, but it'll save you a lot of trouble in the long run.

Here's a tip, if it craps out, raise the Vcore. Also, what your temps after running Prime95 for 20mins+?
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