x2 555 - Core Unlock Enabled problem

James_p · 8 Mar 2011 at 00:10

I'm trying to unlock a Phenom II X2 555, motherboard GA-870A-UD3 but when I set the CPU Unlock to Enabled the system reboots following the Loading Operating system.... message.

I've upped the CPU Voltage and CPU NB VID so I was assuming I've been unlucky. However when I set Core Control to Manual and disable cores 1, 2 and 3 leaving only core 0 enabled (I can't change core 0). It still won't load windows.

Is that normal or have I got something completely wrong?

James_p · 8 Mar 2011 at 09:15

I had a quick go at switching between the cores with no luck last night but the strange thing to me is that I can't boot as a single core.

James_p · 8 Mar 2011 at 20:53

AtaRo said:
whats your vcore.
I got to pump just one notch to mine to get it stable at 3.5Ghz but then mine got a high vid.

I've upped CPU Voltage in steps to 1.4V but no luck and that goes for a single core.

One thing I have noticed is that although prime stresses core 0 and 1. core 1 does not show up in core temp

James_p · 11 Mar 2011 at 11:29

I think it will depend on the cpu, my e2180 displays two cores in core temp

RE: the original post, I think the cpu won't unlock. I'm building another pc with a 555 and a M4A88T-M mobo and that unlocks perfectly. As the other pc requires more power I've switched the cpu's so the b55 is now in the 870A-UD3 mobo. One thing i have noticed is that the 870A-UD3 has set the default voltage to 1.4.
Not sure if this happened with the M4A88T-M, would anyone be able to confirm?