I tried to install iATKOS S3 v.2 on an ASUS board running an AMD 64x2 cpu. I got a kernel panic indicating issues with memory. I then ran memtest and let it go for 24 hrs. no error reported. So I installed the Win8 consumer preview on it. It installed but keeps rebooting also indicating errors with memory modules.

I have 4 dimms with their max capacity, but they are mismatched in that they're from different vendors. Could that be the issue?