I7 920 restarting during 95 blend test

When I run a prime95 blend test my computer is restarting without any BSOD, what could be the cause of this? I am not sure what voltage I should be increasing/decreasing.

Settings:
Multipler [x20]
BLK [169]

Boost [Enabled]
C1E [Disabled]
C3/C6/C7 State Support [Disabled]
CPU Thermal Monitor [Disabled]
CPU EIST Function [Disabled]

QPI Clock Ratio [Auto]

Performance Enhance [Turbo]

System Memory Multiplier [Auto]
DRAM Timing Selectable [Quick]
CAS Latency Time [8]
tRCD [8]
tRP[8]
tRAS[24]
Command Rate [Auto]

Vcore 1.2375
QPI/Vtt 1.315
IOH [Auto]
DRAM Voltage [Auto]

Hardware:
i7 920
gigabyte x58a-ud3r
corsair 650w
ocz 1600 gold (3 x 2GB)
4 answers Last reply
More about restarting blend test
  1. disable boost and set performance enhance to standard.tell us what happens after that.ando try to set your RAM voltage to its rated voltage or lower.Never leave any voltage in auto when oc'ing.
  2. I tried with dram voltage at 1.64 (recommended is 1.65 but I do not have a 165 setting) and cmd rate of 2. I am till having the same issue. Is a memory oc issue or cpu?
  3. It seems to be a memory issue bc I am now stable at:

    Settings:
    Multipler [x20]
    BLK [181]

    Boost [Enabled]
    C1E [Disabled]
    C3/C6/C7 State Support [Disabled]
    CPU Thermal Monitor [Disabled]
    CPU EIST Function [Disabled]

    QPI Clock Ratio [Auto]
    Uncore Clock Ratio[x13]

    Performance Enhance [Turbo]

    System Memory Multiplier [6]
    DRAM Timing Selectable [Quick]
    CAS Latency Time [8]
    tRCD [8]
    tRP[8]
    tRAS[24]
    Command Rate [2]

    Vcore 1.225
    QPI/Vtt 1.315
    IOH [Auto]
    DRAM Voltage [1.64]
  4. Your Memory OC is the issue

    Do you Have a d0 Stepping Model? Those OC beautifully
    Just read through this as well

    http://www.overclock.net/intel-cpus/538439-guide-overclocking-core-i7-920-930-a.html

    Cooling is also vital So Read through this (Intel Temperature) and pick 1 (They are basically identical performance wise)
    http://www.frostytech.com/top5heatsinks.cfm

    Good Luck:D

    Just another Quick thought is that Maybe you Are overheating? Any temp readings? please tell me that you are monitoring them
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