Don't use BETA, use the 1236. Or stick with the 0711, they were good to me.

As for not using the stock of x9 multi? It's absolutely useless. Stick with the 9x.

Now, try:
CPU Freq: 350
DRAM Freq: DDR2 8xx
PC-E Freq: 101
PCI-C Freq: 33.33
EVERYTHING ELSE TO AUTO
Except Mem Vol to 2.15v

RAM Timings:
4-4-4-12-6-35-10-10-10-10 ("IF" no boot? Try 5-5-5-9-xxxxxxxxx)

Don't forget to change the multi to x9.