My 555BE unlocked to 3 cores but overclocks to a stable 4.1 (give or take) Ghz. I'm putting it back to stock until I get a better cooler. I was hoping to get all 4 unlocked but no joy. I thought I wasn't going to unlock the others at all until I figured out how to disable core 1 and enable core 2 and 3. Seems weird to me that I can unlock the other 2 cores but not all 4.
I don't understand that, if you have a 555 the dual cores are core 0,1.
If you are disabling core 1 and enabling 2 and 3 you are actually disabling one of the dual core cores.
If you are enabling 2 and 3 these are the original cores locked by AMD, if they are stable then you have 4 stable cores.
4.1ghz is good I only got 4ghz dual core. When you say stable how stable? What have you stressed it with?
I stressed it with Prime95. I read somewhere else that someone ran into the same thing I did and was only able to get 3 cores running with disabling core 1 and running 0 , 2 and 3. I've got a new cooler on order along with a power supply adapter. My PSU only has a 4 pin CPU plug but the MB has an 8 pin. I read that sometime power might be an issue for not getting all 4 cores unlock. I bought a PSU that had a dual 4 pin CPU plug and tried that but the strange thing is I couldn't boot into windows 7 (64 bit) at all even just running dual core (0 and 1). I returned it.
My original PSU (got a couple of years ago for free after rebate (got a case too!)) that boots into Windows (both PSU's would POST) is an ULTRA 500W. The cooler is the Cooler Master RR-910-HTX3-G1. I would have gotten the 212 but it wouldn't fit into my case.
The MB is a Gigabyte GA-MA785GM-US2H with 4 gig DDR2 667mhz (Micron). Using the built in video for now until I can find a steal of a deal on a better add on. That's it! Nothing special. Just wanted to upgrade my 7 or so year old Athlon 2800+. Don't plan on playing games.