List of Motherboards with issues when running MemTest86 in multi-CPU selection modes

[wb8eye]

GA-990FXA UD5-R5 m/b 5Gig 8 core AMD
Runs single cpu mode on cpu 0 and cpu7
else hangs. ctrl/alt/del won't even work.
Will not execute if cache disabled on any cpu.
Just paid for pro and it will not test the issues I wished for, mainly cache integrity
as Win 10 event log lists cache problems as red flag errors.

[wb8eye]

Reduced 5gig cpu to 3.7gig clock, problems ceased. Extra money for performance wasted!

[David (PassMark)]

5Ghz clock speed was a pretty ambitious CPU overlock.
Glad to hear the problem was solved however.

[cowbawx]

memtest86 failure

-Gigabyte GA-Z170X-Gaming GT
-BIOS "F6"
-Intel i7-6700k

MemTest 6.3.0 Free

-Single Cpu - Runs fine on CPU0, all other CPUs goes to start the test and restarts right away
-Parallel - Runs on CPU0 but says "[CPU Error] Could not start CPU 1-7"
-Round Robin - runs the first 2 ests on CPU0 then hangs PC
-Sequential - just like Round Robin

BETA BIOS F7b also does the same.

[Niczo]

First post

This is a likely bug on the Asus STRIX X99 board, latest bios 0801. In parallel mode the test runs for about 10 seconds until PASS is about 16% complete, then the test just hangs.

Been running in single-core mode for well over 15 hours with no issues so far.

[David (PassMark)]

Niczo, what are the specs for the machine. What CPU? Is it overclocked? Are you sure the cooling is OK?

[rnsjunkmail]

I am told that mine inability to run multiple CPUs is due to a dated UEFI version... still since others are having problems in this area I will mention that I was able to run all the available tests with 6.3.0 and 7.0.0, but I could not select multiple CPUs... they would only run as a single CPU... my system is an Late 2009 27" Apple iMac 11,1 2.8GHz Nehalem with 32GB RAM. I am placing this here just as additional info with no resolution expected.

[Niczo]

Niczo, what are the specs for the machine. What CPU? Is it overclocked? Are you sure the cooling is OK?

My specs are:
i7 6850K
Asus ROG Strix X99
Kingston HyperX Fury 8GB DDR4 2666Mhz x4, "HX426C15FBK4"
GTX 980
Corsair H80i closed-loop water cooler
Corsair AX860i power supply

Temps are good, showing as 45 degrees celsius under Memtest86 and a maximum of 70C for the hottest core running Aida64 stability test and HWMonitor. CPU is not overclocked.

My particular board was released only a couple of months ago and is part of the "second wave" of X99 boards following the realese of the Broadwell-E line, so it's not really suprising there are a few kinks to work out. My system runs great otherwise.

[SenH]

ASUS released a new BIOS 3301(2016/07/25) for X99 boards but MemTest86 V7.0 in parallel CPU mode still freezes at the start of test #2 (see attached screenshot) with my X99-A MB. I guess the fix in M5A97-R20-ASUS-9001.CAP was not rolled out to other ASUS motherboards for the time being.

[keith]

Can you send a copy of the MemTest86.log under EFI\BOOT\ of the USB drive.

We don't know their timeframe for releasing the BIOS fix, nor if they have propagated the change to other boards.

[magtech2017]

asus sabertooth x99 with 64gb ram
latest bios 3301, 6.03 works fine
version 7 will not even load the interface to test
hangs on detecting memory spd?

[keith]

We are aware of a clock speed measuring bug in v7.0 that causes issues during MemTest86 startup. We are in the process of preparing a patch release that will hopefully fix this issue.

If possible, can you give this pre-release build a try:
http://www.passmark.com/ftp/memtest86-usb-7.0.1005.zip

If you can also post/upload the MemTest86.log file under the EFI\BOOT\ directory of the USB flash drive that would be great.

[magtech2017]

pre-release build works now on sabertooth x99 with i7-5820k,64gb ram

[magtech2017]

spoke to soon lol. made it to 38 seconds and locked pc
attached is log file

[keith]

Thanks for the log. We have been getting several reports of Parallel mode issues on the ASUS X99 boards. We will contact them to see if they can get it resolved.