Phenom II X4 955 overclocking

Dolph123 · Dec 21, 2010, 04:42 PM

I've just got my new case, cooler and power supply, and i wanted to do some overclocking.

So far I've reached 3,6 ghz without any problems, but going any higher and it will crash running prime. I've only changed the multiplier from 16 to 18 and I've not tweaked any voltages.

My motherboard is a gigabyte ma770t-ud3p (i know it's not the best, and certainly not made for overclocking.)

So do you think the reason why i can't go any higher is because of my motherboard? Or could i go a little higher by changing some voltages etc? My system idles at about 30 and 42 at max load.

Thanks

iPlayer · Dec 21, 2010, 08:45 PM

If you are overclocking by increasing the multiplier, then just bumping up the voltage for the cpu should be enough to stabilize it. Do small increments and test with OCCT/Linx/Intelburntest. Expect higher temperatures than what you are seeing with Prime, while running these benchmarks/tests.

Tyrsonswood · Dec 21, 2010, 09:45 PM

Following along here..... I've got a Phenom II X 2 555 that unlocked all 4 cores rather well, so it's reported as a Deneb in CPU-Z.

I haven't done any over clocking yet though.

iPlayer · Dec 21, 2010, 09:46 PM

Congrats man!

Dolph123 · Dec 22, 2010, 01:01 PM

Cool, i wish it was possible to unlock a 4x into a 6x

I've bumbed the volt up to 1,42, but the frequency and temperature hasn't changed. Am i doing something wrong or do the volts not effect the frequency?

So far i actually think the performance has gone down

Tyrsonswood · Dec 22, 2010, 01:08 PM

The higher voltage will just make it more stable at higher frequency (hopefully) it doesn't change the performance at the same clocks.

Dolph123 · Dec 22, 2010, 03:21 PM

Ahh... So if i crank up the voltage, i would be able to set a higher multiplier?

iPlayer · Dec 22, 2010, 03:42 PM

Up to some point, yes. But since you haven't tested your chip much at all, you should be testing for stability as you do small increments. Mind you, you are also increasing the amount the power drawn considerably.

You can often adjust the cores with ACC to reach stability too. This seems particularly useful for unlocked cores. Apparently some Asus motherboards can test different combinations for you.

Overclocking reduces the life expectancy of your hardware, although you would likely replace it long before this might become an issue. It can also damage it outright, so do it with caution and moderation, unless you can afford it. Proceed at your own risk.

Dolph123 · Dec 22, 2010, 06:17 PM

I got it to 3,8 ghz on + 0,1 volt (1,45v), but it crashed after 55 minutes running OCCT. Do you think 0,125 volt is a bit too much?

And btw, do you think the VRMs can handle it in the long run? They are 8 + 2 but they do not have a headsink on them (I guess my nh-d14 takes the worst of the heat).

iPlayer · Dec 22, 2010, 07:32 PM

That's a C2, right? I think those are rated at 1.5v max safe voltage, and around 1.425v for the C3 ones @AMD's site.

VRM: You could use a small fan to blow air on them if there's not much air flowing around the area, and maybe even mod some heatsinks on them.

Dolph123 · Dec 22, 2010, 07:47 PM

I've got no idea what C2 and C3 is

I'm not interested in moding and i can't put a fan close to it, but as i said the nh-d14 blows some air over it.

It ran through an hour of OCCT without any problems so i'm going to run through an hour of prime. After seeing a lot of other people who are running at 1,472 volts on the same board, i am pretty sure it can handle it.

iPlayer · Dec 22, 2010, 08:35 PM

I was referring to the CPU's stepping or revision identifier. Pretty sure yours is a C2, being that it defaulted to 1.325v

If it was stable at the linpack max ram test, then it should be good enough. I don't bother with Prime, it's not as good a stability test from my experience.

Dolph123 · Dec 22, 2010, 10:13 PM

It passed the IntelBurnTest om the max stress level (I think it was that you mentioned) and it certainly stresses the cpu a lot more compared to prime and OOCT. I'm now convinced that my motherboard can handle it in the long run now, but i won't be doing any bigger overclock.

Thanks

blibbax · Dec 22, 2010, 11:35 PM

Make sure you do keep an eye on temps just in case - I notice you've not mentioned any so far, hope that doesn't mean you're ignoring them :P

iPlayer · Dec 22, 2010, 11:56 PM

He mentioned them in his first post. He should be fine with that Noctua he has.

Dolph123 · Dec 23, 2010, 09:07 PM

The temperature on idle is about 33 and on load it's about 52 with IntelBurnTest on max and 49 with prime, which i guess is pretty good.

Dec 21, 2010, 04:42 PM	#1
Dolph123 HardwareHeaven Newbie Join Date: Dec 2010 Location: Denmark Posts: 19 Rep Power: 12 System Specs	Phenom II X4 955 overclocking I've just got my new case, cooler and power supply, and i wanted to do some overclocking. So far I've reached 3,6 ghz without any problems, but going any higher and it will crash running prime. I've only changed the multiplier from 16 to 18 and I've not tweaked any voltages. My motherboard is a gigabyte ma770t-ud3p (i know it's not the best, and certainly not made for overclocking.) So do you think the reason why i can't go any higher is because of my motherboard? Or could i go a little higher by changing some voltages etc? My system idles at about 30 and 42 at max load. Thanks

Dec 21, 2010, 08:45 PM	#2
iPlayer Filled with noobsauce Join Date: Nov 2009 Location: between the buns Posts: 1,450 Rep Power: 59	Re: Phenom II X4 955 overclocking If you are overclocking by increasing the multiplier, then just bumping up the voltage for the cpu should be enough to stabilize it. Do small increments and test with OCCT/Linx/Intelburntest. Expect higher temperatures than what you are seeing with Prime, while running these benchmarks/tests.

Dec 21, 2010, 09:46 PM	#4
iPlayer Filled with noobsauce Join Date: Nov 2009 Location: between the buns Posts: 1,450 Rep Power: 59	Re: Phenom II X4 955 overclocking Congrats man!

Dec 22, 2010, 01:01 PM	Thread Starter #5
Dolph123 HardwareHeaven Newbie Join Date: Dec 2010 Location: Denmark Posts: 19 Rep Power: 12 System Specs	Re: Phenom II X4 955 overclocking Cool, i wish it was possible to unlock a 4x into a 6x I've bumbed the volt up to 1,42, but the frequency and temperature hasn't changed. Am i doing something wrong or do the volts not effect the frequency? So far i actually think the performance has gone down

Dec 22, 2010, 03:21 PM	Thread Starter #7
Dolph123 HardwareHeaven Newbie Join Date: Dec 2010 Location: Denmark Posts: 19 Rep Power: 12 System Specs	Re: Phenom II X4 955 overclocking Ahh... So if i crank up the voltage, i would be able to set a higher multiplier?

Dec 22, 2010, 03:42 PM	#8
iPlayer Filled with noobsauce Join Date: Nov 2009 Location: between the buns Posts: 1,450 Rep Power: 59	Re: Phenom II X4 955 overclocking Up to some point, yes. But since you haven't tested your chip much at all, you should be testing for stability as you do small increments. Mind you, you are also increasing the amount the power drawn considerably. You can often adjust the cores with ACC to reach stability too. This seems particularly useful for unlocked cores. Apparently some Asus motherboards can test different combinations for you. Overclocking reduces the life expectancy of your hardware, although you would likely replace it long before this might become an issue. It can also damage it outright, so do it with caution and moderation, unless you can afford it. Proceed at your own risk. Last edited by iPlayer; Dec 22, 2010 at 04:01 PM.

Dec 22, 2010, 06:17 PM	Thread Starter #9
Dolph123 HardwareHeaven Newbie Join Date: Dec 2010 Location: Denmark Posts: 19 Rep Power: 12 System Specs	Re: Phenom II X4 955 overclocking I got it to 3,8 ghz on + 0,1 volt (1,45v), but it crashed after 55 minutes running OCCT. Do you think 0,125 volt is a bit too much? And btw, do you think the VRMs can handle it in the long run? They are 8 + 2 but they do not have a headsink on them (I guess my nh-d14 takes the worst of the heat).

Dec 22, 2010, 07:32 PM	#10
iPlayer Filled with noobsauce Join Date: Nov 2009 Location: between the buns Posts: 1,450 Rep Power: 59	Re: Phenom II X4 955 overclocking That's a C2, right? I think those are rated at 1.5v max safe voltage, and around 1.425v for the C3 ones @AMD's site. VRM: You could use a small fan to blow air on them if there's not much air flowing around the area, and maybe even mod some heatsinks on them.

Dec 22, 2010, 07:47 PM	Thread Starter #11
Dolph123 HardwareHeaven Newbie Join Date: Dec 2010 Location: Denmark Posts: 19 Rep Power: 12 System Specs	Re: Phenom II X4 955 overclocking I've got no idea what C2 and C3 is I'm not interested in moding and i can't put a fan close to it, but as i said the nh-d14 blows some air over it. It ran through an hour of OCCT without any problems so i'm going to run through an hour of prime. After seeing a lot of other people who are running at 1,472 volts on the same board, i am pretty sure it can handle it.

Dec 22, 2010, 08:35 PM	#12
iPlayer Filled with noobsauce Join Date: Nov 2009 Location: between the buns Posts: 1,450 Rep Power: 59	Re: Phenom II X4 955 overclocking I was referring to the CPU's stepping or revision identifier. Pretty sure yours is a C2, being that it defaulted to 1.325v If it was stable at the linpack max ram test, then it should be good enough. I don't bother with Prime, it's not as good a stability test from my experience.

Dec 22, 2010, 10:13 PM	Thread Starter #13
Dolph123 HardwareHeaven Newbie Join Date: Dec 2010 Location: Denmark Posts: 19 Rep Power: 12 System Specs	Re: Phenom II X4 955 overclocking It passed the IntelBurnTest om the max stress level (I think it was that you mentioned) and it certainly stresses the cpu a lot more compared to prime and OOCT. I'm now convinced that my motherboard can handle it in the long run now, but i won't be doing any bigger overclock. Thanks

Dec 22, 2010, 11:35 PM	#14
blibbax What does this do? Join Date: Sep 2008 Location: Oxford, UK Posts: 4,262 Rep Power: 254 System Specs	Re: Phenom II X4 955 overclocking Make sure you do keep an eye on temps just in case - I notice you've not mentioned any so far, hope that doesn't mean you're ignoring them :P __________________ Donate the spare computing power of your PC to help to cure Alzheimer's, ALS, Huntington's, Parkinson's disease and cancer: Fold for HH!

Dec 22, 2010, 11:56 PM	#15
iPlayer Filled with noobsauce Join Date: Nov 2009 Location: between the buns Posts: 1,450 Rep Power: 59	Re: Phenom II X4 955 overclocking He mentioned them in his first post. He should be fine with that Noctua he has.

Dec 23, 2010, 09:07 PM	Thread Starter #16
Dolph123 HardwareHeaven Newbie Join Date: Dec 2010 Location: Denmark Posts: 19 Rep Power: 12 System Specs	Re: Phenom II X4 955 overclocking The temperature on idle is about 33 and on load it's about 52 with IntelBurnTest on max and 49 with prime, which i guess is pretty good.