P9x79 + E5 1650 v2 - Build extremely unstable. Please Help

jamnique · Jan 29, 2015

Sorry to bother you guys and gals, but i'm at the end of my rope here and i could really use some help.

I have a brand new system comprised of:
Xeon E5 1650 v2
P9x79 Deluxe, UEFI version 4801
Two alternative sets of 4x8 GB of ram:
corsair xms3 and kingston HyperX Black

It reboots spontaneously all the time.

[strike]I found this in the manual:
"motherboard does not support dimms made up of 512mb (64mb) chips or less" - Is there a general method of checking RAM density? I can't find info on these specific models.

If you could please help me make this thing run stable at stock speed - no overclocking at all, or even downclocked, I would really appreciate it.[/strike]

Update
As it turns out ram isn't the problem. The problem is the heatpipe close to usb ports and almost touching the nearest ram bank. Removing the neighbouring ram sticks did the trick.

The whole motherboard cooling system runs extremely hot.

Update
More crashes. Now it looks like I have faulty SATA ports...

1LiquidPC · Jan 31, 2015

What power supply are your using? What are your MB temps like in BIOS or sofware? I was running an RIVE since launch until recently, MB temps were fine w/ my 3930k @ 4.5ghz. I did have the board itself both aircooled for about 2 years or so, then put VRM/PCH blocks on for another years. Temps were fine both ways. Do you have an IR thermometer to measure heatsink temps?

jamnique · Jan 31, 2015

I have two power supplies actually, one is a brand new Corsair RM1000 - 1000W, the other is a trusty 600W Tagan that works fine with my other rig.

MB Temp in BIOS and in ASUS Pc Probe is around 30 degrees Celcius during stress.

For now it seems the problem has stopped after installing the newest SATA drivers from ASUS. I hope it isn't another red herring. It's too soon to tell.

1LiquidPC · Jan 31, 2015

Your MB temps look about the same as mine, they hovered around in the 30's depending on ambient temps, system load, ect. Hopefully you got it sorted, I install the SATA drivers, Chipset drivers, ect. on my builds as well.

jamnique · Jan 31, 2015

Thank you for taking an interest.

Unfortunately, after rendering for 2 hours in Houdini with no problem at all, the comupter crashed again when I tried to run Cinebench, then again, and again. Then it crashed when i attempted to run Houdini again.

I'm going to reinstall GPU drivers and test the system with another hard disk, since the SSD is giving me some missing file errors (reported by Houdini).

1LiquidPC · Jan 31, 2015

Try running cmd prompt sfc /scannow to check system file integrity of the OS. This may help determine of your OS is corrupted or not, which may be causing your problems. That way, it's kind of a double check of Houdini saying your SSD is missing files. Also, since your using two different RAM sets, are they set in the BIOS to speeds, timings, voltage that they can handle together. Maybe try running each set individually to see what happens, maybe some Memtest86+ passes?

jamnique · Feb 1, 2015

Thank you for the sfc /scannow tip. It says it didn't find any integrity violation though. The missing Houdini files also magically reappeared. One thing that has changed apart from the SATA drivers is that I have removed the screws holding the SSD in its bay. I think I might have picked the wrong kind or screwed them too tightly.

For now everything seems to have calmed down.

As for the ram, for some time now I've only been using two sticks from the same set.. I'm going to try to do some regular work now and do memtests at night.

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