AIUHB 0249 won't do 166 fsb! help!

I just got my new 2100+ AIUHB 0249 today.

13x133 @ 1.60v loads windows - stable 32C idle - 35C load
13x153 @ 1.60v loads windows - stable 32C idle - 35C load
13x160 @ 1.70v loads windows - stable 37C idle - 42C load
13x160 @ 1.65v crashes after loading windows
13x166 @ 1.65v crashes after loading windows
13x166 @ 1.70v crashes after loading windows

the chip have been running since 4pm est 2/18.
thanks for any advice

spec is listed below, i got AS3 and a new SK-7.

my KT4 Ultra limits my muti @ 13x and vcore @ 1.7v

What are your temps?
Try lowering the mult and running 166 to see if its your mobo or ram that is the issue.
If your temps are good, you could probably add another .1 to .2 volts without issue.

i can't lower muti (my kt4 ultra won't let me)

i seen the wire trick to let me get lower muti, is there a way to use wiretrick for vcore ?