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Overclocking a Phenom 555 on M4A785TD-M EVO

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November 25, 2010 4:18:34 AM

Hello all, This is my first overclocking attempt. I have a Phenom II x2 555 that i cannot get a stable overclock of 4.0 ghz or even 3.8. Prime last for about 5 minutes on 3.8 and about 1 nano second on 4.0. I adjusted the voltage a bit but not past 1.45, I believe the limit on this CPU is 1.5 right? Currently it sits at 3.6 ghz stable. The temperature never got past 95 F on prime and idles at about 65-70 F. I didnt screw with memory settings because I didnt see anything that looked relevant to my noobish eyes. I do understand that ram can hold back a cpu but my bios didnt give me alot of options for memory tweaking, at least i dont think it does? lol. I have cool and quiet disabled. I did not try to unlock any cores (dont really care to) and have advanced clock calibration disabled. I hope I am not doomed to 3.6 ghz with my current hardware, From all the forums and reviews I saw It seems like everyone and their dog could overclock this to at least 3.9. (lol im sad because I cant overclock my cpu and extra 8%). I would be greatful for any help.

550 watt PSU (dont know the brand to lazy to move the computer and take the side off to see)
motherboard - M4A785TD-M EVO
CPU - Wow you already know thats amazing! (Phenom II x2 555)
CPU cooler - Cooler Master H520 (or something like that)
Ram - 2 x 2 GB DD3 1066mhz (I think the brand is Advant)
GPU - GeForce 9800 GT (was sad to find out it was just a renamed 8800)
Case - A pretty black one with a 120mm case fan and a small one (80mm?)
OS - XP Pro 32 bit
a c 139 à CPUs
a c 242 K Overclocking
November 25, 2010 4:48:47 AM

how much Vcore, VDIM, RAM set timming?
Ram - 2 x 2 GB DD3 1066mhz (I think the brand is Advant) down ratio or default ?
how much Temperature fullload understress tess ?
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November 25, 2010 4:53:35 AM

The ram's voltage is at 1.5v default i think.
ratio is default to i believe
the cpus temp at full load was 95 F i have no clue what the memory temp is
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November 25, 2010 4:59:02 AM

i didnt see much in my bios to change memory stuff cept some dram speed and some other wacko settings with to many seemingly random letters and numbers when i set it from auto to manual. it only let me change my dram from 400mhz to 800mhz (wtf i thought the slowest ddr3 was 1066mhz)? dont know if that info helps any lol
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November 25, 2010 5:02:35 AM

henydiah said:
how much Vcore, VDIM, RAM set timming?
Ram - 2 x 2 GB DD3 1066mhz (I think the brand is Advant) down ratio or default ?
how much Temperature fullload understress tess ?


sorry i guess i have to go to your msg box and reply to it for you to get the msg lol
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a c 139 à CPUs
a c 242 K Overclocking
November 25, 2010 5:08:25 AM

I don't Know your CPU Black or NO ??????
when u don't Know anything .....!
use CPU-z Software & HW monitor download in www.cpuid.com
in CPU-z u can see anything about speed,clock, Vcore

u can OC start again from 3.4Ghz it via BIOS just increase FSB only & the next Oc step by step
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November 25, 2010 5:26:51 AM

henydiah said:
I don't Know your CPU Black or NO ??????
when u don't Know anything .....!
use CPU-z Software & HW monitor download in www.cpuid.com
in CPU-z u can see anything about speed,clock, Vcore

u can OC start again from 3.4Ghz it via BIOS just increase FSB only & the next Oc step by step


The CPU is a black edition. The tempertures im seeing in HW monitor are 30 C and under
CPU Vcore is 1.31V to 1.34V
FSB:D RAM = 3:8 | DRAM freq is 535.7mhz
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Best solution

a c 139 à CPUs
a c 242 K Overclocking
November 25, 2010 5:38:43 AM

yep...nice info !
just increase multiplier step by step + Increase Vcore 1.44 to 4Ghz
Set RAM 3:8 8-8-8-23 & set max VDIM 1.65 (increase vdim step by step in option bios)
HTlink go down 1600Mhz,
Disabled cool n quite (C1E), disable spread spectrum, disabled Power Now(vandep technology)
let other auto
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November 25, 2010 5:45:09 AM

henydiah said:
yep...nice info !
just increase multiplier step by step + Increase Vcore 1.44 to 4Ghz
Set RAM 3:8 8-8-8-23 & set max VDIM 1.65 (increase vdim step by step in option bios)
HTlink go down 1600Mhz,
Disabled cool n quite (C1E), disable spread spectrum, disabled Power Now(vandep technology)
let other auto


Thanks for all your help im gona go to bed and mess with this tommorrow
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a c 139 à CPUs
a c 242 K Overclocking
November 25, 2010 5:50:34 AM

Don't forget your temperatur MAx 60~63C remeber Hot can damage Hardware !
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November 26, 2010 2:40:24 PM

henydiah said:
yep...nice info !
just increase multiplier step by step + Increase Vcore 1.44 to 4Ghz
Set RAM 3:8 8-8-8-23 & set max VDIM 1.65 (increase vdim step by step in option bios)
HTlink go down 1600Mhz,
Disabled cool n quite (C1E), disable spread spectrum, disabled Power Now(vandep technology)
let other auto


Well I tried what you suggested and it was stable at 4 ghz for about 5 minutes (an improvement over a couple of seconds). temps never went over 95 F.
I ended up pumping the cpu voltage step by step to 1.49V, just below the red threshold, and the ram to 1.65V and it still wouldnt stay stable.
Anyway I at least got it stable at 3.8 ghz so im better off now then when i started. I give up on getting it to 4 ghz, don't want to fry it.
Guess i am going to have to live without an xtra 5 fps in my games lol.
Thanks for your help.
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November 26, 2010 5:07:53 PM

Best answer selected by MyMatrixUsername.
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