i have have both and when i ran prime95 for 4+ hrs at 3.4 i have no problem, no errors. but when i run orthos it locks up at the same speed, specs and all. ran memtest all night last night with no errors at 1:1 and default timing 5 5 5 18 2t with 2.0 volts. i have my vcore at 1.4555v and temp is at 22c idle and in the high 40c on load with prime and at orthos it goes around mid 50c. so should i not worry about orthos as long prime runs fine with no errors for more than 4 hrs? should i change any setting on my bios? thanks for any help.