I am still having problems,I have tried bios f4k but i still have the same problems:-

I can post normally up to bclk 172 ,anything over and i cannot post normally.System restarts a few time before displaying the overclock error.

BCLK 171 and 172 are untstable anyway with hard locks in vista and even in the bios.Turbo on/off or ht on/off makes no difference also using more voltage on the below settings makes not difference.If i cannot boot above 172 i cannot test!

f4 offical bios. tried f4k,f4l and f5a
I am now running 21 x 170 3570Mhz
vcore 1.2875
qpi/vtt 1.18
qpi pll 1.84
cpu pll 1.14
ioh core 1.12
ich i/o 1.58
ich core 1.14
dram 1.66 manually set 8,8,8,24 2T
qpi,unicore and mem on auto (make no difference if i set x36,x16,x8)

also cpu clock drive set to 800mv pcie set to 900mv

all other settings on auto
All power saving options off.

I have run linx on the above settings for 2 hours.

Does anyone else have trouble over bclk 170?I must have a bad cpu or motherboard.I think i might try another board once the chipset matures , there will be some better board released i am sure.