Hey guys, Thought i would post my attempt here.

I brought the 550 BE and a Gigabyte GA-MA790XT-UD4P

So far i have failed to get 4 cores working.

Using the F4G bios, i am able to set to ACC auto + hybrid mode, but when i reboot, it crashes at the windows 7 loading screen.

I have tried alot of different settings with the voltages.
vcore up to 1.5 and nbvid to 1.3(the nbvid voltage change doesn't show up in software tho, says its 1.1v I think this is a bug with the mobo?) But it still crashes as its loading windows, usually gives me the error:IRQL_NOT_LESS_OR_EQUAL

So i guess the other 2 cores on my 550BE are duds? Unfortunately i forgot to write down the stepping number.

Only other reason i can think of is - I had a old amd x2 4400+ and asus mobo in this computer and i haven't reformatted windows 7 after changing mobo/cpu/ram, but i doubt this would be the problem?

Anyway this is what i can OC to on 2 cores and be rock solid stable, it ran prime95 for over 5 hours small ftt fine. 40 deg max temp 28-30 idle



I have had it up to 4.1ghz and able to run some simple tests like super pi but it crashed if i ran something like Intel burn test very quickly.

just interested to no if changing the HT link speed has any benefit? i tried it at 2.4 and it seemed fine.

Also is my NB frequency at a good level?

thanks guys.