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Need help to reach 4.0Ghz on Phenom II X4 955

post #1 of 9
Thread Starter 
These are my system specs currently right now.

AMD Phenom X4 II 955 @ 3.8Ghz
Corsair H50 CPU Cooler Push N Pull Duel Fans.
Corsair Dominator 8GB DDR3 1600(2+2+2+2)
MSI NF750-G55 Motherboard
Cooler Master CM690 Basic Case
Corsair HX850w Modular PSU
EVGA Geforce GTX 560 Ti (1.07v/920/2150)
Western Digital Black Scorpio 750+500+500 Raid 0
Windows 7 Ultimate 64-bit

LG E2350V @ 1920X1080

And here are my current settings in BIOS and temps. Please help, any advice or on helping me to reach 4Ghz with this build will be greatly appreciated. Also I'm having some trouble understanding the difference between CPU-NB VDD Voltage and CPU-NB Voltage.... Same goes for CPU Voltage and CPU VDD Voltage it self. Help!





    
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post #2 of 9
It's Dual fans... not Duel fans.

Up the voltage on the core to 1.5v and go the 4GHz. If it's stable you're good.

If it's not, up the voltage a little more.
     
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post #3 of 9
If those are idle temps, there is definitly something wrong imo, thats way too hot, you sure you've got your H50/TIM on correctly? have you tried lowering the cpu core voltage a bit, and test for stablility? Before pushing to the 4.0 mark.

Edit: to the guy above me, its not very good advice to tell somebody to just bump their volts to the max and hope its stable. It's already too hot as it is, hope you don't give advice much for expensive equipment :<
Edited by Asmodean - 5/9/11 at 12:46pm
post #4 of 9
Quote:
Originally Posted by J!NX View Post
And here are my current settings in BIOS and temps. Please help, any advice or on helping me to reach 4Ghz with this build will be greatly appreciated. Also I'm having some trouble understanding the difference between CPU-NB VDD Voltage and CPU-NB Voltage.... Same goes for CPU Voltage and CPU VDD Voltage it self. Help!
I'm really new too. What helped me is to do a search in this forum for any terms I didn't understand. What I thought I wanted was just for someone to tell me "Use this voltage, set your NB here, use this multiplier...", but what was best is to change things slowly. For me, going to 3.8 was very easy, beyond that, I couldn't get anything to work when I just used the CPU Voltage and the multiplier. Going back to stock and getting the NB to 2400-2600 and then the ram timing tighter, help me get to a higher OC at lower voltage and at a lower temps.
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post #5 of 9
Thread Starter 
Quote:
Originally Posted by Asmodean View Post
If those are idle temps, there is definitly something wrong imo, thats way too hot, you sure you've got your H50/TIM on correctly? have you tried lowering the cpu core voltage a bit, and test for stablility? Before pushing to the 4.0 mark.

Edit: to the guy above me, its not very good advice to tell somebody to just bump their volts to the max and hope its stable. It's already too hot as it is, hope you don't give advice much for expensive equipment :<
Thanks for the reply, I have ran 8+ hours of Prime 95 on this build already with this current clock and also have ran an overnighter of OCCT on this current build, So far everythings stable at how its at now. I also do stress test on the GPU once in a while without any issues, I use Either EVGA OC Scanner or MSI Kombuster. Anything after 3.8Ghz is just like a hitting a brick wall, i've tried my best, but now I just need help from more expirenced oc'ers like yourselves.
    
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post #6 of 9
Well if you want the quickest route, it would be check the 4.0GHz club page member list of which ones are 955's and test out their Vcores, fsb/multi etc. Or your going to need to up the volts a bit if you can't get it stable any higher on what your juicing it atm. Im no pro, but id defo try sort my idle temps out before clocking any further man, H50 should be keeping those cores way cooler then it currently is. Phenoms are very picky about heat when OCing, and go way further when kept cool, of course there are always those chips that just dont want to be overclocked (mine for example). Are those temps just after a benchmark/stability test or somethin? If they're not, read below, else disregard.

What kind of ambient temps are you (roughly) where you are? because unless your living next door to hell, they're way too hot, especially seeing as all of your case fans are throttled to 100%. how long do you have that h50? have you cleaned the RAD on it? they get blocked up with shÃ*te and it blocks the air flow. Obviously if its new, thats not an issue. id start by checking the air flow in your case.

Edit: and i don't mean your temps are unstable, what i meant by the heat concern is its going to be a nightmare to get any higher if you can't cool it down a bit.
Edited by Asmodean - 5/9/11 at 1:48pm
post #7 of 9
Thread Starter 
Quote:
Originally Posted by Asmodean View Post
Well if you want the quickest route, it would be check the 4.0GHz club page member list of which ones are 955's and test out their Vcores, fsb/multi etc. Or your going to need to up the volts a bit if you can't get it stable any higher on what your juicing it atm. Im no pro, but id defo try sort my idle temps out before clocking any further man, H50 should be keeping those cores way cooler then it currently is. Phenoms are very picky about heat when OCing, and go way further when kept cool, of course there are always those chips that just dont want to be overclocked (mine for example).

What kind of ambient temps are you (roughly) where you are? because unless your living next door to hell, they're way too hot, especially seeing as all of your case fans are throttled to 100%. how long do you have that h50? have you cleaned the RAD on it? they get blocked up with shÃ*te and it blocks the air flow. Obviously if its new, thats not an issue. id start by checking the air flow in your case.
It has come across my mind in terms of airflow, I undust this machine once a month, including the h50 rad. I think i'm a little limited by My case in terms of cable managment and airflow, Cooler Master CM690 Basic but no where do I see people using this Mid-Tower as an adviced Case for OCing so idk, I might need a Full-Tower, I don't want to jump to conclusions, and state that air flow might be the issue, but either way i have been craving a new case, this machine is only 9 Months old. Give myself an excuse to to buy a case, but i do see your point on the temps. I'm buying a Full-Tower case. Get that dought out of the way. Any other advice.
    
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post #8 of 9
I had to bump my vcore all the way up to 1.5v in order to be stable at 4.0ghz. Only needed 1.375 for 3.8ghz. There really is a huge wall. My temps are a lot lower than yours though, running around 37C on idle and load at 45-48C.

btw i have a 965 not a 955. They are very very similar though.
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post #9 of 9
I suppose really, the best advice i could give you, is no advice, as im waiting for that chip to arrive myself for my rebuild, im not experienced on it yet, but at least i know who is check this out, if you haven't already:

http://www.overclock.net/amd-cpus/49...x4-9x5-oc.html
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