***The Official Phenom II Overclocking Thread***

[gareth170]

post your max stable clock including the settings e.g voltages, fsb, nb speed, htt speed and temps.. also make sure to run OCCT or prime95 or amd overdrive stability test and post a screenshot...

 

[gareth170]

Well I clocked the 940 to 3.4Ghz and ran overdrive for an hour, went to about 65c though, but I'm using the supplied fan and than weak thermal paste so yeah...
I'll post some proper results when I buy a new fan and some paste!

well amd site says the 940 max safe temp is 62c

 

[gareth170]

Ah right, I've got it down at 55c at 3Ghz.
Is it normal for it to go that hot on the supplied fan? Seemed a bit hot to me..

that does seem to high.

maybe try resiting the HSF.

how good is your case airflow?

 

[gareth170]

now im at 3.7ghz and nb at 2.4ghz, stable!!! tbh i don't know if it's because i upped the nb voltage to 1.1875 V or cos i installed sp2 beta or cos i haven't installed amd overdrive. but before on same vcore it wasn't stable..

........

now im very pleased with it. also very good temps...

 

[gareth170]

26 degrees at 3.8ghz?? do these chips just naturally run much cooler than intel ones?

mine idle at 30c and never goes over 49c underload, this is at 3.7ghz 1.46v, nb/ht t 2.4ghz, all on air.

 

[gareth170]

I know it's a bit off topic, but I've got a 9950 overclocked to 3.3GHz, and it berely hits 52 under load. Stock cooler and stock paste. I thought the Phenom II's were cooler? Cheers, Chris.

Phenom II's are cooler. example my 940 at 3.7ghz 1.46v, nb/ht t 2.4ghz, do 38c while gaming, using prime95 for 2 hours it goes to 49c. thats with a Thermalright Ultra-120A YS-TECH FD1225 120mm Fan

 

[gareth170]

ahh i cant even get mine stable at 3.6 atm =( whenever i change anything to diwth with ht speeds it just hates it, and it wont boot properly at 3.6 even at 1.425v if i just raise the multi, any thoughts?

1.5v is safe amd says, but u need a good cooler.

what cooler u using?

if its an aftermarket cooler, i would say up the voltage to 1.45 or 1.475v then u should hit 3.6ghz even maybe 3.7ghz. or try upping the CPU-NB voltage to 1.1875 V

 

[gareth170]

ahh i see i was getting a bit worried at 1.45 becuase it seems pretty high, especially seen as my old athlon ran much hotter at 1.35 lol, but ill see if 1.5 makes any difference as well, temps seem ok, still under 50 on load with a thermaltake blue orb as cooling, so theres definately still some headroom i think

just make sure u keep it under 60c..

http://products.amd.com/en-us/DesktopCPUDetail.aspx?id=509&f1=&f2=&f3=&f4=&f5=&f6=&f7=&f8=&f9=&f10=

 

[gareth170]

Also, I used AMD Overdrive to test clocks, once I'd found the sweet spot I used the BIOS to set the speeds!

it's better to use prime95 or OCCT to test it. AMD Overdrive doesn't push the cpu as far as prime95 or OCCT do.

 

[gareth170]

Understood but it's worked fine for me thus far, I've been playing Men of War for hours at 2048x1158 full detail, 4xaa, 16xaf, no problems at all.

yeah games may not have any issues. but windows itself may get issues if it's not 100% stable.. example i can run amd overdrive test at 3.7ghz 1.44v without fail but prime95 fails at that voltage, at 1.46v prime95 runs without issues.

anyway i got my 940 at 3.7ghz 2.6ghz nb/htt now.

 

[gareth170]

Just looking in my bios and things are slighty different as they show multipliers and not ghz? Would someone be kind enough to explain these so I know where to start my overclocking??

same as mine.

9x = 1800mhz (1.8ghz), 10x = 2000mhz (2.0ghz), 11x = 2200mhz (2.2ghz), 12x = 2400mhz (2.4ghz) ect..

basicly its 200 x 9 = 1800.

 

[gareth170]

This does me fine.

Idles @ 32* and load of 46*, 50* max after a hour of Prime

similar to mine and the temps...

have u tryed upping your nb/htt to 2.4ghz?

on 3dmark06 cpu score i beat a phenom 940 thats at 3.8ghz / 1.8ghz htt/nb to my 3.7ghz /2.4ghz nb/htt..

 

[gareth170]

BSOD's on Vista boot-up if take NB/HT to 2.6GHz, but to be honest, havn't really tried 2.2 or 2.4, but will give it a go soon. Will I notice much speed increase?

u will see a boost..

1.30-1.35v on the cpu-nb will/should get u to 2.6ghz.

Also, is this voltage ok as a 24 hr voltage? Is it decreasing life by much?

amd site says max recommend voltage is 1.5v so u are fine.

 

[gareth170]

now im at 3.8ghz, 2.6ghz nb/htt.. stable!!!

 

[gareth170]

Hmmm I thought HTT speeds didn't make that much difference whereas NB made a lot?

yes but its better to run the htt the same as the NB speed if can.

 

[gareth170]

is 1.55v safe? underload it goes to 1.52v. load temp is 55c

 

[gareth170]

What is the MAX safe NB voltage on a 940?

nobody knows really but 1.30-1.35v is perfectly safe, which will get u to 2.6ghz.

 

[gareth170]

What sort of 3DMark06 scores are people getting?

At 3.4GHz I got 15,552.

When I get a moment I'll run it at 3.9GHz and see the difference.

cpu at 3.7ghz, nb/htt at 2.6ghz, gpu at 745/1145

3DMark Score 15339
SM 2.0 Score 5733
SM 3.0 Score 6795
CPU Score 5498

 

[gareth170]

Oddly AMD Overdrive now reboots my PC when I try and run it?

Does anyone know how to 'reset' it because I've tried a re-install and that has failed.

look in c:\Program Files\AMD\OverDrive\DefaultConfig.xml.. maybe try editing it or delete it.

 

[gareth170]

from this:


to this:


good?