I have a Xeon 3360 that was lying around and I decided to put that in instead of the QX9770. I just got it to post but found out that 1 stick of my OCZ PC2 8500 (2x2GB) Reaper HPC died. I now have 4GB OCZ PC2 6400 (2x2GB) in and she has posted fine. I went right to ET6 and loaded up the 3 boost/max ... she's at 3600MHz (450x8) @1.344v ... this is WITHOUT any BIOS adjustment. Question ... does going into BIOS from here and fine-tuning change the ET6 set-up?