Which component is failing?

didgemaster · 20 Oct 2009 at 23:01

Gigabyte ex58-ud5
i7 920
6GB OCZ Obsidian

At stock and fails in 8 mins on Prime 95 blend test if I run Small FFTs or In-place large FFTs it will cycle through each of the tests

I have clocked the CPU to 4GHz in order to get the RAM to 1600Mhz and I have successfully completed a full pass on memtest x86 v4.0 with RAM timings of 10-9-9-22

didgemaster · 20 Oct 2009 at 23:25

Fails Intel burn test V2.3

didgemaster · 21 Oct 2009 at 00:42

CPU has never been above 70 at stock the hover around 50-55 under max load

Almost always fails with memory_management 0x1a error

RAM never goes above 1600MHz

I have been testing 3 cores with HT and it seems stable. I am going to try 4 without HT to see how it goes

didgemaster · 21 Oct 2009 at 01:04

4 cores without hyper threading is stable

Can I be certain that I have a CPU specific issue?

didgemaster · 21 Oct 2009 at 07:38

Yes

I have now unplugged two of my hard drives so I now have no array and re-installed Windows 7 on a single drive to rule out the RAID array as the cause of the issue

Just to summarise my testing:

Run memtest x86 V4.0 at 1600MHz 10-9-9-22
I have cleared the CMOS then loaded optimised defaults in the BIOS
Removed 2 of my 3 GPUs
Taken my RAID array out of the equation by unplugging all the disks and using a separate drive which I have reinstalled windows on
So at default frequencies and settings I have tested

1 core + HT = Stable
2 cores + HT = Stable
3 cores + HT = Stable
4 cores - HT = Stable
4 cores + HT unstable

in fact it blue screens in less than 8 mins