I have the 1.6A/P4B266-C combo from newegg. Great rig; however, Sisandra and prime95 crash after a few hours. I am running at default voltage (1.5), 133FSB, 1:1, and turbo 1 with 2 sticks of crucial 256MB. Only thing I can think of is that I need to bump up the voltage. MBM5 reads 1.55 to 1.58 when I have it set to 1.5 in my bios. Is this an indication that my chip is trying to draw more juice?