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AMD Phenom II 555 X2 and Gigabyte GA-MA785GM-US2H

Hello, I am a noob at building PCs. I just recently built a computer with AMD Phenom II 555 X2, Gigabyte GA-MA785GM-US2H, 4GB Kingston HyperX memory, and a radeon HD 5670 video card. I was looking at the forums, reading around about how to overclock and unlock cores. I tried unlocking the core through the directions in the forum, and Windows 7 would never boot up. I had changed the ACC and changed my EC to Hybrid. I'm guessing I either have something set wrong or my processor just can't do it. So after that I wanted to try overclocking my processor a little. My motherboard came with EasyTune6, although I read not to use it. So I go through my bios, and even after reading the overclocking article I am still confused a little. In my bios there are several options, and i'm not sure which one to play with. There is CPU clock ratio, CPU Northbridge freq, CPU Host Clock Control, and CPU frequency. I cannot figure out which one it is I am supposed to move up. I clocked my memory up from 800 to what it is supposed to be. My last question is about what I have posted below this. This is what comes up when I open CPU-Z. Do these numbers look correct for a stock 555BE X2? Is core speed 800 MHz with a multiplier of x4, and bus speed of 200 MHz correct for this chip? Any help is much appreciated! :D


Number of processors 1
Number of threads 2


Processor 0
-- Core 0
-- Thread 0 0
-- Core 1
-- Thread 0 1

Processors Information

Processor 1 ID = 0
Number of cores 2 (max 2)
Number of threads 2 (max 2)
Name AMD Phenom II X2 555
Codename Callisto
Specification AMD Phenom(tm) II X2 555 Processor
Package Socket AM3 (938)
Extended CPUID 10.4
Brand ID 29
Core Stepping RB-C3
Technology 45 nm
Core Speed 803.7 MHz
Multiplier x FSB 4.0 x 200.9 MHz
HT Link speed 2009.1 MHz
Instructions sets MMX (+), 3DNow! (+), SSE, SSE2, SSE3, SSE4A, x86-64, AMD-V
L1 Data cache 2 x 64 KBytes, 2-way set associative, 64-byte line size
L1 Instruction cache 2 x 64 KBytes, 2-way set associative, 64-byte line size
L2 cache 2 x 512 KBytes, 16-way set associative, 64-byte line size
L3 cache 6 MBytes, 48-way set associative, 64-byte line size
FID/VID Control yes
Min FID 4.0x
P-State FID 0x10 - VID 0x0C - IDD 31 (16.0x - 1.400 V)
P-State FID 0x9 - VID 0x14 - IDD 28 (12.5x - 1.300 V)
P-State FID 0x5 - VID 0x1C - IDD 26 (10.5x - 1.200 V)
P-State FID 0x100 - VID 0x28 - IDD 15 (4.0x - 1.050 V)

Package Type 0x1
Model 55
String 1 0x7
String 2 0x6
Page 0x0
CmpCap 2
TDP Limit 80 Watts
TDC Limit 62 Amps
Attached device PCI device at bus 0, device 24, function 0
Attached device PCI device at bus 0, device 24, function 1
Attached device PCI device at bus 0, device 24, function 2
Attached device PCI device at bus 0, device 24, function 3
Attached device PCI device at bus 0, device 24, function 4
10 answers Last reply Best Answer
More about phenom gigabyte ma785gm us2h
  1. hey is your cpu a black edition?
    and you should try updating to latest bios that could fix your unlocking issue...also try raising voltage a bit if it's still unstable after the unlock...after I find out if your cpu is be or not I can help you oc...
  2. Ya, it is a Black Edition processor. I have already updated to the most recent bios for my motherboard. I have not touched the voltage yet though, as I didn't want to kill/overheat something without knowing what i'm doing.
  3. Yeah just slightly raise the cpu voltage (also called cpu vcore) in small increments of .015v or .025v...
    I'll get back to you soon with more detailed instructions on unlocking and overclocking...
  4. alright! I tried bumping it up a touch, and it still did the same thing. It goes through the bios, but just sits at a black screen instead of booting up windows. Maybe i'll just be better off overclocking the 2 cores I have.
  5. well yeah if the locked cores are faulty which may be the case as you might not have gotten a good batch...
    So even if you can't unlock you can still overclock it...and it will probably go high enough...
  6. I have a stock system, no special cooling on my processor. I overclocked to 17.5x multiplier. That is 3.5 GHz. I read you can also overclock using the BUS, I dunno, I think I will stick to just the multiplier if that is ok way. My computer seems totally stable. EasyTune6 tells me I run about 30-35 degrees idle/light use CPU temp, and under stress test at 100% CPU usage it maxes out at about 53-54 degrees. The system temp reads around 34 degrees at idle/ light use. Do you think these numbers are OK? I mean I cant foresee many times where I will be using 100% CPU. I am running at the stock voltage too. I read somewhere just to keep it under 60 degrees, but i'm not sure. I would love to go a little higher, but i'm not sure if I should be pushing it anymore or not with stock cooling. Thanks a lot for all the help videl!!
  7. Best answer
    you could probably go to 3.6 to 3.7 on stock without much danger...
    and yes keep it under 62C and you're fine...also overclock with the multiplier if you can it's a be, that's what they're made overclock using the multi...the non be cpus can only overclock with bus and that's way more work and hassle...
    The temps you have are actually nice for a stock cooler to tell you the truth...
    mine went higher... so your temps are fine...I wouldn't push it too much farther though...

    When I got the cooler master v8 at 3.8Ghz my temps were like that... 32-34 idle and 54 load...
  8. Best answer selected by tbonestl.
  9. tbonestl said:
    Best answer selected by tbonestl.

    nWere you able to unlock cores? I have the same board and in most guides i've seen online, our model has not been verified as supported.
  10. This topic has been closed by Mousemonkey
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