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AMD Phenom II X2 555BE won't overclock.

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July 4, 2011 5:38:26 PM

Phenom II X2 555be won't overclock even slight increase in clocks causes instability.

Motherboard Asus M2N68AMSE2.
GPU-Zotac 9600 GT 1GB
July 5, 2011 4:20:18 PM

Hey. Are you doing it from boot? I just got a Phenom II X2 560be and it's overclocked to 3.9ghz using AMD overdrive. Mobo is an Asus M4A78LT-M LE.
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July 6, 2011 1:36:30 AM

gunsliner, would you mind describing your OC procedure?
By "instability" do you mean that the system does a reset loop or BSOD after BIOS?
Are you using an aftermarket CPU cooler?
What are the rest of your system specs?
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July 6, 2011 1:57:11 AM

Dude I got the same combo and its the motherboard, it sucks big time! Thats why you cant overclock.
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July 8, 2011 8:20:47 AM

teej said:
Hey. Are you doing it from boot? I just got a Phenom II X2 560be and it's overclocked to 3.9ghz using AMD overdrive. Mobo is an Asus M4A78LT-M LE.

yes.
AMD Overdrive won't work.
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July 8, 2011 8:25:25 AM

T_T said:
gunsliner, would you mind describing your OC procedure?
By "instability" do you mean that the system does a reset loop or BSOD after BIOS?
Are you using an aftermarket CPU cooler?
What are the rest of your system specs?

My system sometimes restarts after booting into windows or won't even boot.
I'm just increasing the multiplier from bios.I'm using stock AMD cooler.
ASUS M2N68AMSE2 mobo
Zotac 9600gt 1gb
2 GB Ram
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a c 242 K Overclocking
July 8, 2011 8:55:42 AM

you must OC step by step , don't to the point it's dangerous..!
from default 3.3Ghz increase multiplier and get 3.4 , and vCore manually instead of auto in the state, you must test in here ... if stable, increase the multiplier and raise a little more voltage again , test again ... and so on. maximum temperature at below 68C when stress test.

add : in midle OC need disabled C1E, Cool n Quite
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July 8, 2011 6:24:38 PM

gunslinger_001 said:
My system sometimes restarts after booting into windows or won't even boot.
I'm just increasing the multiplier from bios.I'm using stock AMD cooler.
ASUS M2N68AMSE2 mobo
Zotac 9600gt 1gb
2 GB Ram


OK, just so you know, with the stock cooler, you won't get very far with your OC. I strongly recommend you upgrade to an aftermarket cooler. Moving on...

Start your OC by disabling C n' Q, and any other power saving features your mobo has. Next manually configure your RAM settings to what is shown on the stickers or the packaging; all other voltages and frequencies in the BIOS should be left on their default values or [Auto]. You will need adjust these later.

Continue your OC process by raising the multi by .5 each time. After each increase, save and exit (F10), and then see if you can get into Windows. Repeat this until you cannot get into Windows. I realize you've already experienced, but for the sake of clarity, I'm explaining the whole process (just in case you missed a step).

WARNING! Without an aftermarket cooler, continuing from this point can be potentially fatal to your CPU.

Now that you've found the multi that won't allow you to boot into Windows, it's time to start raising your Vcore. To avoid permanent damage to your CPU, make your increases to vcore by one step incriments. After each increase, hit F10 and see if you can get into Windows. Continue this step until either:

1. You successfully boot into Windows; or
2. You reach the max CPU voltage (hint: check AMDs website for the max voltage)

That takes care of the basics. If you want to continue pushing your OC, you may need to start lowering the multi or frequency of the NB. You may also need to lower the RAM frequency; or even loosen the timings.

Once you've established the max multi, start raising the reference clock (A.K.A. FSB) by 5 MHz increments, F10, and see about booting into Windows.
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