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New RAM - failing memtest - what to do?

post #1 of 10
Thread Starter 
Hi,

New setup is on bench being tested (sig rig) and am wondering if anyone can give me some advice.

What happened...

The first thing I did was manually set RAM settings to stock (7-8-7-24, 1.6V) because they were showing 11-11-11-28, 1.5V) then clean install of Windows, updates, etc, all fine, first time posts, no problems, things are great.

Later I had a bsod while getting programs reinstalled, etc which was weird so I went into BIOS and made sure RAM timings were ok. I turned on XMP and the stock settings--voltage, timings were detected. Never had a bsod after that.

Much later I began testing the entire board and started in on MemTest 86+ V 4.2 with dimms 1, 3 populated.

failed in seconds on test 2 (if you want to know the error code etc I will post but for now want to keep it short)

I have run memtest 16 times now on various combinations of RAM/dimms. On all of my single stick runs I have had no errors after one complete pass (apx 25mins each time).

When I got to stick B (yes I was keeping track) in dimm 4 I noticed that the timings that were showing in MemTest were 6-6-6-20 (how fitting). I hadn't noticed this before and was "certain" that in the previous tests I saw stock timings of 7-8-7-24. I tried stick B in dimm 3, same thing, No test failure but showing non stock timings again 6-6-6-20.

I won't bore you with the whirlwind of testing after that but essentially, when dimms 3 or 4 are populated with a single stick, no matter which one, memtest runs fine but shows 6-6-6-20. When running in dual channel in either 1,3 or 2,4 timings show up as spec'd (7-8-7-24) but fails test #2 in seconds.

I've also run P95 for about 1 hour while I was out with no failures.

I presume something is up with dimms 3,4 not the RAM and should return this thing for a new one. Yes or No? Or are there some other tests I should run on the RAM?
Edited by 16ReasonsWhy - 10/15/11 at 1:58pm
post #2 of 10
you have to test every/each DIMM slot and stick separate..run memtest over night to determinate if it's your RAM or MB slot
P.S> clear CMOS always help on SB architecture (25min memtest won't cut it)
Edited by coolhandluke41 - 10/15/11 at 2:13pm
    
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post #3 of 10
Thread Starter 
Quote:
Originally Posted by coolhandluke41 View Post
you have to test every/each DIMM slot and stick separate..run memtest over night to determinate if it's your RAM or MB slot
P.S> clear CMOS always help on SB architecture (25min memtest won't cut it)
I guess it was not clear in the op--i have tested every stick in every dimm separately. Of course 25 mins won't cut it. Why should I run over night when the timings are not showing up as the same in all 4 dimms? Isn't this a clear indication that dimms 3 and 4 are not working correctly?
post #4 of 10
Just Rma the sticks.

Sent from my SAMSUNG-SGH-I997 using Tapatalk
post #5 of 10
Thread Starter 
Quote:
Originally Posted by ajresendez View Post
Just Rma the sticks.

Sent from my SAMSUNG-SGH-I997 using Tapatalk
Thanks. I'm not convinced the sticks are bad and would rather make sure before I can't RMA the board. I'd rather be stuck with a bad pair of $90 sticks than a $250 dollar mobo. I'm going to flash BIOS, update drivers, etc and see what happens.
post #6 of 10
Hey bud I wouldn't mind you visiting G-Skills website and read my thread and report your issues there. http://www.gskill.us/forum/showthread.php?t=9286

I have exactly the same board as you and run the Sniper version of your RAM (PC12800 1600MHz 7-8-7-24). I purchased two 8GB kits and inserted it into my board. Immediately I set it to XMP, ran it up and it went straight to 8-8-7-24. Tested it in with manual timings 16GB - wouldn't boot at 7-8-7-24, it would cycle away and finally boot on 11-11-11-28 timings no matter what I did. Removed 1 kit and voila it boots on 7-8-7-24, but only when you set the timings manually.

I thought great, hit the XMP setting again, but only with one 8GB kit and same thing as with the 16GB. It runs up as 8-8-7-24.

Every test I did showed that XMP will always start up as 8-8-7-24 no matter what config I have.

With manual and 16GB I can only run it as 8-8-7-24 to get it to boot.

All RAM tested OK when tested by themselves but failed when testing them as pairs


Have a read of the thread, you'll get the general idea of how my problems are similar to yours and I suspect it is a BIOS upgrade for the board that is needed.
Edited by ~LL~ - 10/15/11 at 3:39pm
post #7 of 10
Thread Starter 
Quote:
Originally Posted by ~LL~ View Post
Hey bud I wouldn't mind you visiting G-Skills website and read my thread and report your issues there. http://www.gskill.us/forum/showthread.php?t=9286

I have exactly the same board as you and run the Sniper version of your RAM (PC12800 1600MHz 7-8-7-24). I purchased two 8GB kits and inserted it into my board. Immediately I set it to XMP, ran it up and it went straight to 8-8-7-24. Tested it in with manual timings 16GB - wouldn't boot at 7-8-7-24, it would cycle away and finally boot on 11-11-11-28 timings no matter what I did. Removed 1 kit and voila it boots on 7-8-7-24, but only when you set the timings manually.

I thought great, hit the XMP setting again, but only with one 8GB kit and same thing as with the 16GB. It runs up as 8-8-7-24.

Every test I did showed that XMP will always start up as 8-8-7-24 no matter what config I have.

With manual and 16GB I can only run it as 8-8-7-24 to get it to boot.

All RAM tested OK when tested by themselves but failed when testing them as pairs


Have a read of the thread, you'll get the general idea of how my problems are similar to yours and I suspect it is a BIOS upgrade for the board that is needed.
Thanks, I AM having the same problems it sounds like. When I run my two sticks in dual channel mode I always fail mem test in seconds. I noticed that with one stick in DIMMs 1 or 2 i see the correct timings in mem test, but NOT when one stick is either DIMMs 3 or 4.

I can only guess that when two DIMMs are populated, one from each channel, that this becomes a problem with one stick running on stock timings and the other on timings that are different. I'm convinced it's the mobo but want to get to the bottom of this.

I'm updating BIOS and all drivers now, but will definitely read up on that thread.
post #8 of 10
RMA the sticks.

If the new sticks you get back still have the problem then RMA the board.
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post #9 of 10
Thread Starter 
Quote:
Originally Posted by ~LL~ View Post
Hey bud I wouldn't mind you visiting G-Skills website and read my thread and report your issues there. http://www.gskill.us/forum/showthread.php?t=9286

I have exactly the same board as you and run the Sniper version of your RAM (PC12800 1600MHz 7-8-7-24). I purchased two 8GB kits and inserted it into my board. Immediately I set it to XMP, ran it up and it went straight to 8-8-7-24. Tested it in with manual timings 16GB - wouldn't boot at 7-8-7-24, it would cycle away and finally boot on 11-11-11-28 timings no matter what I did. Removed 1 kit and voila it boots on 7-8-7-24, but only when you set the timings manually.

I thought great, hit the XMP setting again, but only with one 8GB kit and same thing as with the 16GB. It runs up as 8-8-7-24.

Every test I did showed that XMP will always start up as 8-8-7-24 no matter what config I have.

With manual and 16GB I can only run it as 8-8-7-24 to get it to boot.

All RAM tested OK when tested by themselves but failed when testing them as pairs


Have a read of the thread, you'll get the general idea of how my problems are similar to yours and I suspect it is a BIOS upgrade for the board that is needed.
I don't think the problem is the RAM in my case since I have one paired kit. I updated BIOS to f8 and all drivers and I ran memtest on one stick over night for 9+hours with no errors and the other stick is going strong after 6 hours. Pretty sure it's the mobo. I hope newegg is good about RMA; never had to do it before.
post #10 of 10
try to rise your VCCIO/DDR voltage and command rate 2T,2x4 (8gb) usually require more I/O voltage
Edited by coolhandluke41 - 10/17/11 at 8:45am
    
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