per jessen ueecomputerorg im starting new thread new results significantly changed situation undoubtedly remember discussion stability problems new workstation couple weeks ago ill quickly sum 1 gigabyte motherboard quite new model 2 amd phenom quadcore cpu 22ghz 3 4gb memory 4 software raid1 sata disks 5 ati radeon x1650 6 850w powersupply subject system stress testing mprime automatically reboot fairly short time asked mersenne prime mailing list lot people use mprime anyone anything add george woltman mprime author suggested running small fft test would use lot memory obviously memory problem mind well interesting results machine running almost hour 4 mprime instancesthreads already passed first selftests started cpu temperature rose almost immediately 6364c seemed settle 66c hit 67c settled back 60c leave memory memory controller problem memtest86 fails spot per jessen zürich fri 08 aug 2008 093952 0100 opensuse ot unstable system still trying identify culprit update