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AMD® Phenom™ II Overclocking Thread

John24 said:
So what you meant then is it'll only go to 2250 on stock volts. Which is actually quite good.

Indeed the CPU-NB is the integrated memory controller on the CPU, it has nothing to do with the motherboard northbridge. I guess moogleys is worried about his VRMs, which are to the left of the CPU socket, not under the northbridge HS.

"MSI micro atx" is ringing alarm bells, check out the quality of the VRMs over at overclock.net before attempting any overclocking.
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Its happy at 16x250 4ghz and the NB at 2250 all stock volts and I'm happy with that tbh. Its not a bad little motherboard and has handled far more than I expected. Its an MSI 785GM-E51
 
MOOGLEYS said:
Its happy at 16x250 4ghz and the NB at 2250 all stock volts and I'm happy with that tbh. Its not a bad little motherboard and has handled far more than I expected. Its an MSI 785GM-E51
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What volts are stock volts and have you stability tested it?

In a way I'm undervolting mine for 4GHz. Stock turbo core is 3.7GHz 1.47v and I'm running 4GHz on all cores at 1.425v. Fully stable.

I wouldn't dream of overclocking on that board, if you do start raising voltages get some airflow over the VRMs first.
 
John24 said:
What volts are stock volts and have you stability tested it?

In a way I'm undervolting mine for 4GHz. Stock turbo core is 3.7GHz 1.47v and I'm running 4GHz on all cores at 1.425v. Fully stable.

I wouldn't dream of overclocking on that board, if you do start raising voltages get some airflow over the VRMs first.
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1.408V according to CPUZ. I tested it overnight running OCCT and was fine. The board seems to handle everything quite well although it has no VRM cooling but my case does have very good airflow.
I'm happy with it @ 4ghz and 2250 on the CPU NB it runs everything I care nicely and its only really used for gaming.
 
MSIs are very very capable boards and have better cooling and near identical - again, if not better power than your Gigabyte John ;)

Mini-fan over VRMs might not be a bad idea though if you want to push the CPU-NB much much further!
 
Cookeh said:
MSIs are very very capable boards and have better cooling and near identical - again, if not better power than your Gigabyte John ;)
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Power reg will be no where near as good as the Giga.

mATX boards tend to have 4+1 PWM, full sized ATX will be 8+2, which will be far more capable, and run cooler.
 
MOOGLEYS said:
1.408V according to CPUZ. I tested it overnight running OCCT and was fine. The board seems to handle everything quite well although it has no VRM cooling but my case does have very good airflow.
I'm happy with it @ 4ghz and 2250 on the CPU NB it runs everything I care nicely and its only really used for gaming.
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What's it set to in BIOS? It could be a lot higher than that but show lower in CPU-Z due to vdrooop.

I'm just currious as you could potentially have a golden chip there. What chip is it exactly btw?
 
Ah it's a quad, thought it was a hex. 4GHz @ 1.40v would be slightly above average for a hex, not sure how good it is for a quad thought.
 
1.4v is my vid too, despite not even needing 1.325v for stock speed. Probably why people are able to plug on in, crank up the multi and have 4ghz. The default on this mobo is 1.475 for some reason :confused:

Anyway, what's the max temp I should be keeping an eye on in HW Mon for a c3 955? 65c?
 
Azuse05 said:
1.4v is my vid too, despite not even needing 1.325v for stock speed. Probably why people are able to plug on in, crank up the multi and have 4ghz. The default on this mobo is 1.475 for some reason :confused:

Anyway, what's the max temp I should be keeping an eye on in HW Mon for a c3 955? 65c?
Click to expand...

Max temp for a C3 955 is "Maximum operating temperature (°C) ? 55 - 62"
Take from cpu world
 
62 is technically your top end temp... but I've inadvertently spiked mine to 70 without crashing, and had 64-65 for a while when I didn't notice how dusty my cooler had gotten xD Probably not ideal for long term operation though :)
 
Fair enough, the mobo keeps it around 49/50, and I've only managed to get it higher by starting overdrive where it hits 55 before the cpu fan can spin up.

Impressed with this chip though. VID of 1.4v but happy with an 18.5 multi @ 1.35v. If I wasn't so lazy I'd fiddle with the fsb because it was happy with a quick run @ 3.8. 4GHz at 1.375 (or lower) seems a very real possibility which is impressive consider it's only a 4+1 phase mATX. I guess the 8pin power goes some way to offset that weakness because vdroop is also tiny (1.350v=1.344v).
 
I have never OC pretty much anything cpu/gpu before!

I have:

6GB DDR2
Gigabyte GA-M720
AMD Phenom II X4 940 Black Edition

Would i be able to oc my cpu? i have started reading a few tutorials here and trying to digest the info! can some one maybe point me in the direction of a tut for my chip.

Thanks for any help ;)
 
Grale said:
I have never OC pretty much anything cpu/gpu before!

I have:

6GB DDR2
Gigabyte GA-M720
AMD Phenom II X4 940 Black Edition

Would i be able to oc my cpu? i have started reading a few tutorials here and trying to digest the info! can some one maybe point me in the direction of a tut for my chip.

Thanks for any help ;)
Click to expand...

First rule make sure yer temps are stable before even trying overclocking. 62 is the very max you want to hit with phenom II. 55 is ideal max

You have a black edition so your multiplier is unlocked.

2 safe routes you can go for starting out

1. You can just increase the CPU multiplier until it is unstable I increase it until the computer don't boot then decrease it again until it boots then run prime for stability testing. This is very limited but the safest and easiest option for overclocking.

2. FSB method of overclocking this is long and slow method but can give lot better overclocking than the above one. It is also just as safe as the above one



For more information
http://www.sevenforums.com/overcloc...2-am3-phenom-phenomii-overclocking-guide.html

If you have not done overclocking before stay away from voltages. Until you learn a bit more about it and feeling confident.
 
Cheers, but I only want 2400 to keep it in sync with the ram.

Btw what's the quickest way to check the stability of the cpu nb? It passed the 10+hr blend yesterday but failed linx at 1.125, 1.15 & 1.175 despite having passed at 1.125 previously. I suspected it was just corruption due to tinkering so I dropped it to stock, downloaded linx again and sure enough it passed 50 runs at 1.125v again.

Obviously I'd like to verify this so any pointers would be appreciated.
 
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