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Memtest Error Query with G.Skill ram

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July 30, 2012 12:29:17 PM

Hi all

I've recently replaced a graphics card after having several related BSOD's and no signal to the monitor, and re-instaleld windows on a fresh SSD only to get more BSOD's (System service exception) and 100CPU usage for no apparent reason.

I thought my windows install might be corrupt or there may be a problem with the SSD, so I'm currently running a new version of windows from a new disc on a spare platter drive - no issues so far but-

I ran Memtest over night and it came up with this:

test = 7
pass = 4
fail address = 00400715e04 - 1639.10
good = ddf4f747
bAd = dde4f747
err-bits = 00100000
count = 1

1 fail and 6 passes

Should I run Memtest again on each individual stick and replace the culprit?

Other specs
Intel i7 2600k 3.4Ghz
G Skill 16.0 GB Dual-Channel DDR3 @ 798MHz (11-11-11-28)
Asrock Z68 Extreme 4
Nvidia GTX 470
Thermaltake tough power 850W PSU
a c 102 } Memory
July 30, 2012 4:48:07 PM

Yes, but also make sure to input proper settings for the memory. I'm not sure which memory kit you have, but if it is DDR3-1600 or better, make sure to enable XMP Profile, then test one module at a time to determine the possible culprit.

Thank you
GSKILL SUPPORT

July 30, 2012 5:05:28 PM

XMP is enabled now, 1.5v (9-9-9-24)
I'm testing the modules 1 at a time, but this is going to take a while

thanks.
Related resources
a c 104 } Memory
July 30, 2012 5:09:51 PM

Memtest86+ is the current gold standard ram test.
If you get ANY errors when testing forever, you have a problem.

In the short run, test individual sticks to identify any good ones.

Those latencies lead me to think you have ram faster than 1600.
To get those speeds, you need to apply sufficient voltage. Try increasing the ram voltage by .1v. Be mindful that voltage over 1.65v may permanently damage your cpu.

I suggest you try your tests with the ram speed set to something like 1333 or 1600.
There really is little value in anything faster, read this:
http://www.anandtech.com/show/4503/sandy-bridge-memory-...
a c 104 } Memory
July 30, 2012 5:12:44 PM

gskill support said:
Yes, but also make sure to input proper settings for the memory. I'm not sure which memory kit you have, but if it is DDR3-1600 or better, make sure to enable XMP Profile, then test one module at a time to determine the possible culprit.

Thank you
GSKILL SUPPORT


@gskill support

Nice to see a vendor supporting their product here. Good job!
July 31, 2012 9:08:35 AM

Yeah this is the 1600 kit.

I've tested each dimm in memtest86+ (2 have done 6 passes, 2 have done 8 passes) and I've had no errors now whatsoever.

I've also done a 1 pass in each slot and received no errors. I did notice however that the ram is being tested as 9-9-9-24 in slots one and two, but changes to 6-6-6-20 in slots 3 and 4 even though the xmp profile is enabled. Is that normal?

Should I run longer tests in each slot?

It's testing at 798MHz should I up the voltage until it reaches 1600 and retest?
July 31, 2012 9:58:16 AM

It's may also be worth noting before I started running memtest, I ran prime 95 and got FATAL ERROR - Rounding was 0.5 expected less than 0.4 almost immediately on multiple workers.
July 31, 2012 10:27:26 AM

ok, now maybe I am getting somewhere. I just got a whole stream of errors when two specific chips were in slots A1 and B1. The computer seemed to fail to start several times (the fans came on and almost instantly went back off again a few times).

The second pair of dimms work fine in slots A1 and B1.

I've tried a couple more combinatins and only seem to hit issues when these two sticks are in slots A1 and B1
a c 104 } Memory
July 31, 2012 2:17:56 PM

ishkur said:
ok, now maybe I am getting somewhere. I just got a whole stream of errors when two specific chips were in slots A1 and B1. The computer seemed to fail to start several times (the fans came on and almost instantly went back off again a few times).

The second pair of dimms work fine in slots A1 and B1.

I've tried a couple more combinatins and only seem to hit issues when these two sticks are in slots A1 and B1


Your motherboard manual will tell you where to install sticks if you have less than the maximum. Some slots may be preferred for proper operation. Are they A1 & B1? Naming conventions may differ. Also, a specific two slots should be populated first to get dual channel operation.

If you have installed two sticks in the proper two slots, and it works, then good.
It the other two do not work in the proper two slots that are known to be good, then you likely have some faulty ram, and a rma is in order.
July 31, 2012 2:38:25 PM

Yeah for installing two sticks, the manual states to install them in A1 and B1.

I'm receiving many many errors if one stick in particular is in the A1 slot with any other stick in B1. So I'm guessing the fault is happening only when the sticks are operating in dual channel mode.
a c 104 } Memory
July 31, 2012 2:51:30 PM

I think rma time.
a c 102 } Memory
August 2, 2012 4:53:53 PM

The timings may be a glitch, use a program like CPU-z to check.

798MHz may be correct depending where you look, that is the real frequency of DDR3-1600 (DDR3-1596)

Did you purchase a single 16GB kit or two 8GB kits?

I'm assuming you have the latest BIOS for the motherboard?

Thank you
GSKILL SUPPORT

!