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Phenom II x4 955 Black Edition overclock

post #1 of 11
Thread Starter 
Hi, I'm new to overclocking and i need some help overclocking my Phenom II x4 955 Black Edition.
specs:
Motherboard: Gigabyte GA-MA770T-UD3P
Video: Radeon R9 270x
Ram: 8Gb DDR3 1333
Power: Sentey 700W
Phenom Cooler: Hyper 212 with 2 coolers.

I tried first going for 4 GHz (20x200) with 1,475V and when i started primer95 test got blue screen in just seconds.
Then tried 3.8ghz(17x220)with 1,475V and run Prime 95 that was stable since 2 hours of processing and got a blue screen(average of 60ºC).
Also tried 4ghz(18x220) with 1.5V and also got blue screen a few seconds after PC turned on.
Last thing i tried was 3.74ghz (17x220) with 1.5V and it seems its stable(average of 65ºC).

Here`s a screen of my BIOS settings:



Since am new at overclocking i don't know if settings are correct or if i have to change others.
My meta is to have a 4ghz or if not possible a 3.8 GHz overclock without damaging much the CPU.

Forgot to say that at 3.2GHz 1.35V, normal settings my CPU had average 40ºC and 50ishºC at games.
Edited by Aranel - 4/5/14 at 11:42am
post #2 of 11
Welcome to Overclock.net.

For starters, your overclocking completely backwards. You make small jumps in multiplier and CPU frequency. Prime 95 test for a while, then make more jumps. When it becomes unstable, up the voltage a little. Rinse and repeat.

Set everything back to stock clocks and go read up on all Phenom II overclocking material. Something like this isn't just a set and forget. You risk frying your CPU and motherboard.
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post #3 of 11
Quote:
Originally Posted by NexusRed View Post

Welcome to Overclock.net.

For starters, your overclocking completely backwards. You make small jumps in multiplier and CPU frequency. Prime 95 test for a while, then make more jumps. When it becomes unstable, up the voltage a little. Rinse and repeat.

Set everything back to stock clocks and go read up on all Phenom II overclocking material. Something like this isn't just a set and forget. You risk frying your CPU and motherboard.


^^ What Nexus said. Also that's more voltage then you should need to hit 3.8. 4 ghz is hard to hit on the phenom ii's without running too hot. The temp difference between 3.8 @ 1.42V vs the temps I got at 4 ghz @ 1.5 were too much to even bother going beyond 3.8. You should also manually set your RAM frequency to its rated specs instead of leaving it on auto. Overclocking the Phii can cause your Ram to run at higher then it's rated specs depending on what settings you change. Also try only upping your multi and leaving your base clock at stock. You might have better luck with stability. But before you do anything I would suggest reading up on overclocking the PHii. They have been around long enough that there is an abundance of guides and walkthroughs. Good luck and happy OCing! smile.gif
Edited by BlueLights - 4/5/14 at 12:38pm
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post #4 of 11
Thread Starter 
Ok, i'v read some guides about overclocking my CPU and started to do it, till now i have 18x 200MHz = 3600MHz with standart VCore = 1.350V, working stable (everything tested with Prime 95).
I changed Dram freq to 1600MHz with 1.65V as you said, and everything else is back to standart.

Now, i have a doubt, i'v read in some guides that people can either increase or decrease VCore in +-0.005 V, and when i get in my BIOS and chose Manual for VCore it only let me change it to +-0.025V, so if i have it at 1.375V and want to increase 1 level it goes to 1.400V, and thats a really BIG jump, why do you think i cant change it to +-0.005V ?
Edited by Aranel - 4/7/14 at 10:30am
post #5 of 11
For starters stop overclocking on the stock heatsink, 2nd, change the stock thermal paste, 3rd, please don't let the CPU reach 65C, at the very most, 60C. 4th, Get an aftermarket cooler, even a CM212 will help.
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post #6 of 11
Thread Starter 
Quote:
Originally Posted by Boinz View Post

For starters stop overclocking on the stock heatsink, 2nd, change the stock thermal paste, 3rd, please don't let the CPU reach 65C, at the very most, 60C. 4th, Get an aftermarket cooler, even a CM212 will help.

I Think you didnt read the first post of my thread, where i stated the cooler that iam using for the processor and its not the base one, its a hyper 212 with 2 coolers, i bought it a few weeks ago so the thermal paste was also changed, and at the point iam now at overclocking testing with Prime 95 the stability of 18.5x 200MHz = 3700MHz at a VCore= 1.350V, i got 56ºC max running Prime 95
post #7 of 11
That's about the limit temp wise. The PII can get a bit flaky once you get into the higher temperatures like that. One other thing to consider is CPU_NB speed have you increased that at all. Having a speed of around 2400 for that clock will help with stability and performance.
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post #8 of 11
I used to have a 955 @4ghz with a evo 212, My voltage was 1.43, It idle'd at 28 degrees and at max load it was around 48 (Never saw it go over 52 degrees) so the cooler should suffice, well mine did biggrin.gif
Also... do you know what stepping version your 955 is? It will be either C2 or C3, If it's C2 you are going to have a hard time oc'ing as they take a lot of voltage to up the Gh'z, you probably wont get any more than 3.7Ghz on a C2 with a 212.
Edited by Ningi07 - 4/7/14 at 11:45am
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post #9 of 11
Quote:
Originally Posted by Boinz View Post

For starters stop overclocking on the stock heatsink, 2nd, change the stock thermal paste, 3rd, please don't let the CPU reach 65C, at the very most, 60C. 4th, Get an aftermarket cooler, even a CM212 will help.

He has a CM212?, he said he has? blinksmiley.gif

Edited by Ningi07 - 4/7/14 at 11:55am
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post #10 of 11
Thread Starter 
Iam now testing 19x 200MHz = 3800MHz at a VCore= 1.350V, and got blue screen before i can enter to my session so i increased the VCore to 1.400V, then everything was Ok till i run Prime 95 that got Blue screen 15 min after testing.
Now iam gonna test VCore 1.425V, 19x 200MHz = 3800MHz and see if it stable, i also tried increasing NB as you told, and got it 2200 everything goes well, then change it to 2400 and blue screen before entering session, so i increased it voltage from 1.100 to 1,200, 10 by 10 and still got blue screen, so i will leave it to 2200 for now.

In the last test 3800MHz at VCore: 1.400V i got an average of 52ºC, i think its a good number.

I think its C3, thats what Everest says:



rw04so.jpg
Edited by Aranel - 4/7/14 at 12:19pm
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