yup single core
i got it to book 4 cores at 4ghz
but even just 1mhz more.. it became so difficult.. so i just disabled the other 3
at 1.38v i stress tested for about 3 hours last night and my temps never went over 55c so i might do some playing around w/ particular voltage and see what clock i can stay stable at
i actually tried booting at 4.27ghz as well... had voltage set to 1.7 in the bios, but was only reading it as 1.62.. in bios upon restart... i made it to windows but it wasnt stable, super pi was running slower... i was only at 55c in bios as well
which isnt bad for such a high voltage... tuniq tower... +3 case fans attatched to it... = awesome!