Good RAM Failure. - Overclock.net

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post #1 of 2 Old 05-10-2014, 09:37 AM - Thread Starter
 
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Is there any reason why RAM should pass MemTest but fail under Windows 7 x64?

I have 3x2Gb 1333 sticks in an Asus M5A99X Evo R2.0 with a 1055t CPU.

My last board (MSI 870A-G54) died after 3 hard years of good service which is when I bought the Asus.

Setting the board up identically to the previous MSI OC I was immediately aware of a 5% drop in performance and over a couple of months have been plagued with BSOD, system freezes and CRC errors in WinRAR so I lost confidence in the machine.

Despite thoroughly testing with MemTest and Prime95 I could find no problems, temps included.

However returning the RAM to stock speed instead of 1397 saw the CRC errors in WinRAR disappear.

Other than the RAM getting tired I can only imagine the possibility that under load the PSU/motherboard voltage fluctuate and compromise stability of the RAM.

I'm happy to report everything is rock solid now:

CPU=3.5-4Ghz Turbo
CPU-NB=2500
HT=2000
RAM=1333

Strangely enough the old MSI board performed better, given that Asus have a 3 year warranty, and that's how long my MSI lasted, I'll be more tempted to buy a budget board next time.

Cheap as chips and last long enough to coincide with upgrade cycle.

Buy cheap, OC it and don't worry about it dying!

BTW that's 3 hard years of the 1055t (125W) running at 3.668Ghz slightly undervolted without problems if anyone's interested.

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post #2 of 2 Old 05-10-2014, 10:30 AM
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Quote:
Originally Posted by M5A99X Evo r2 View Post

Is there any reason why RAM should pass MemTest but fail under Windows 7 x64?
MemTest exercised the memory worse than Windows did.

Don't use MemTest, no matter what it's fanboys say. If it's so good, why don't any of the commercial memory testing farms use it instead of MemTest86, MemTest86+, or Gold Memory?
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