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Stable running LinX, but bluescreens around 4-7am...

post #1 of 2
Thread Starter 
Need some help...

I have 200 x 20 4Ghz overclock in my sig rig. It passes 20 runs of LinX with 25000 problem size and a complete round of memtest86, but for some reason every morning when I wake up, the screen is either blank (no video output) or Windows did a restart and shows a message that system did not shut down properly. I know it was a blue screen because of the message shown:

Problem signature:
Problem Event Name:BlueScreen
OS Version:6.1.7600.
Locale ID:1033

Additional information about the problem:
OS Version:6_1_7600
Service Pack:0_0

Even when I bump up the vcore & qpi voltage, the system won't restart for a couple of days, but eventually after 3 or 4 days it will restart again. Based on the timestamps of the dump files, it's always around 4am - 7am. I checked and am positive I don't have any scheduled jobs running.

My guess is the mobo is not feeding a stable voltage over a long period of time. Is there any program that would log the Vcore into a file? Much like how realtemp/gpuz can output to a log file temperatures? If I can verify the vcore is dropping too low, then I'd need to RMA my mobo.

Here's my BIOS settings
CPU Ratio Setting: 20
Intel SpeedStep Tech: Disabled
BCLK freq: 200
PCIE freq: 100
DRAM freq: DDR3-1603 Mhz
DRAM Timing: 9-9-9-24-1T
UCLK freq: 3208 Mhz
QPI Link Data Rate: 7218 MT/s
CPU Voltage: 1.35000
CPU PLL Voltage: 1.8
QPI/DRAM Core voltage: 1.33125
DRAM Bus Voltage: 1.50
Load-Line Calibration (Vdroop): Enabled
C1E Support: Disabled
Hardware Prefetcher: Enabled
Adjacent Cache Line Prefetch: Enabled
MPS and ACPI MADT ordering: modern ordering
Intel Virtualization Tech: Enabled
Intel HT Technology: Enabled
Active Processor Cores: All
A20M: Disabled
Intel C-State Tech: Disabled
CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
post #2 of 2
20 runs of LinX is hardly calling your system stable. I normally just do 5-10 runs for a really rough starting point.

Try at least 50 runs of LinX on MAX, and then 8-12 hours of Prime95 blend. In my experience Prime95 for 8+ hours is usually a good indicator that your system is stable.
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