F3-12800CL7-4GBRH and P55M-UD4: Intermittent Memory problems

[d0rift]

I have some issues with my memory from the very start and I'll try sum up the problems as concise as possible. Firstly, here are my specs:

CPU: i7-860 (running stock)
Motherboard: GA-P55M-UD4
Motherboard BIOS: F5
Memory: F3-12800CL7-4GBRH x 2 (8GB in total)
GPU: 7900GT
OS: Windows 7 64bit

My problems started with random shutdowns. At that stage I tested everything and narrowed it down to the motherboard, which I sent off and got replaced. before it was sent off, I tested all 4 sticks and found thousands of errors. I also test the memory one stick at a time and didn't manage to find any errors with memtest. So i assumed it wasn't memory related.

With the new motherboard, the random shutdowns stopped, which I was pretty happy with. However, I left my computer run overnight and woke up to a BSOD (Memory Management). I ran memtest with all 4 sticks again and found thousands again! Not wanting to pull my comp apart again, I used the settings i found here and ran memtest again. Initially, it was fine. After a couple of hours it can up with a low amount of errors like ~4.

Windows7 is running fine in this state but I can't overlook those errors that memtest has detected. Do I need to do some further tweaking? I prefer not to take the sticks out but I will if I must. I hope I've given enough info. I have some screenshots of my settings if required.

Thanks in advance.

[d0rift]

Anyone have any ideas at all?

[d0rift]

These are the settings I'm using:

Advanced Frequency Settings:

CPU Clock Ratio 21x

Advanced Core Features [Press Enter]:

Intel(R) Turbo Boost Tech................[Disabled]
CPU Cores Enabled........................[All]
CPU Multi-Threading......................[Enabled]
CPU Enhanced Halt (C1E)..................[Auto]
C3/C6/C7 State Support...................[Auto]
CPU Thermal Monitor......................[Auto]
CPU EIST Function........................[Disabled]
Bi-Directional PROCHOT...................[Auto]

QPI Clock Ratio..........................[Auto]
QPI Link Speed........................[4.86Ghz]
Uncore Clock Ratio....................[18x]
Uncore Frequency.........................2400MHz

>>>>> Standard Clock Control <<<<<

Base Clock (BCLK) Control................[Enabled]
BCLK Frequency ..........................[133]
Extreme Memory Profile (X.M.P.)..........[Disabled]
System Memory Multiplier (SPD)...........[12.0]
Memory Frequency (MHz)................1600
PCI Express Frequency (MHz)..............[100]
C.I.A.2..................................[Disabled]

>>>>> Advanced Clock Control <<<<<

CPU Clock Drive..........................[ 800mV]
PCI Express Clock Drive..................[ 900mV]
CPU Clock Skew...........................[ 0ps]

Advanced Memory Settings:

Extreme Memory Profile (X.M.P.)..........[Disabled]
System Memory Multiplier (SPD)...........[12.0]
Memory Frequency (MHz)................1600
Performance Enhance (SPD)............. [Standard]
DRAM Timing Selectable (SPD)............ [Expert]
Profile DDR Voltage ..................
Profile QPI Voltage ..................
Channel Interleaving.....................[Auto]
Rank Interleaving........................[Auto]

>>>>> Channel A & B

Channel A Timing Settings [Press Enter]:
Cas Latency Time........................[7]
tRCD....................................[7]
tRP.....................................[7]
tRAS...................................[24]

>>>>> Advanced Timing Control

tRC....................................[Auto]
tRRD...................................[Auto]
tWTR...................................[Auto]
tWR....................................[Auto]
tWTP...................................[Auto]
tWL....................................[Auto]
tRFC...................................[Auto]
tRTP...................................[Auto]
tFAW...................................[Auto]
Command Rate (CMD).................. 1 [2]

>>>>> Misc Timing Control

B2B Cas Delay..........................[Auto]
Round Trip Latency.....................[Auto]

Channel A Turnaround Settings [Press Enter]:
Different DIMMs........................[Auto]
Different DIMMs........................[Auto]
On The Same Rank.......................[Auto]

>>>>> Channel A Writes Followed By Writes

Different DIMMs........................[Auto]
Different DIMMs........................[Auto]
On The Same Rank.......................[Auto]


Advanced Voltage Settings:

******Mother Board Voltage Control ******
Voltage Types............Normal......Current
--------------------------------------------

>>> CPU
Load Line Calibration...................[Auto]
CPU Vcore..................1.19375v..[Auto]
QPI/VTT Voltage..........1.100v.....[Auto]

>>> MCH/ICH
PCH Core....................1.050v.....[Auto]
CPU PLL......................1.800v.....[Auto]

>>> DRAM
DRAM Voltage..............1.500v.....[1.660v]
DRAM Termination.........0.750v.....[Auto]
Ch-A Data VRef............0.750v.....[Auto]
Ch-A Data VRef............0.750v.....[Auto]
Ch-B Data VRef............0.750v.....[Auto]
Ch-B Data VRef............0.750v.....[Auto]


Miscellaneous Settings:[/SIZE]

Isochronous Support....................[Enabled]
Virtualisation technology..............[Disabled]
USB Storage Function? .................[Enabled]


I'm assuming no one has any idea what is going on then?

[pagla]

I am experiencing similar random BSOD with win7 although I'm running 1 pair of the memory modules instead of your 2 pairs. i.e. 4G instead of 8G

Any errors in memtest86+ is bad as it will cause similar memory errors while running win 7 which will cause unpredictable results, so you shouldn't overlook that error.

(the memory errors for me did not occur if I ran 8-8-8-24 timings but I cant get 7-7-7-24 stable)

[d0rift]

Hmmm...ok
So you managed to run these sticks ok at those timings?
I think having 4 sticks also changes things with mine...
I don't mind running them with looser timings...I was running them at 9-9-9-24? before anyways..
Are looser timings worth a try?

I was hoping one of the G.Skill Techs would reply with some ideas but that hasn't happened yet lol.

[GSKILL TECH]

Memory Voltage will be fine at 1.60V. Uncore Clock Ratio set to AUTO. Try testing each memory module individually to determine whether you have a defective stick. You may want to try the XMP Profile to see if it will be any different.

You should not need to loosen timings. Keep me posted on the results.

Thank you
GSKILL SUPPORT

[d0rift]

Update:

I decided to test the modules in the pairs they came in (ie. 2 sticks at a time)

I left everything on auto (even DRAM voltage) and loaded the XMP profile.

Both pairs passed memtest with flying colours.

Now, I do I make it work with all 4 sticks? lol

[d0rift]

Is it worth RMA-ing my memory modules?

What is the turnaround like in Australia? And where do I have to ship it off to?

[d0rift]

Updated BIOS to F6

Still had an error running on 1333Mhz with looser timings.

It seems to have the error at the same size..6784MB..does that mean anything?

[d0rift]

Ran memtest with:

QPI/VTT 1.35V
DRAM Voltage 1.66V (1.648V actual)
PCH 1.14V
Performance Enhance on Extreme
and with XMP loaded

Still get an error at address 6874MB each time...

This is giving me a headache..

[d0rift]

Any help at all will be greatly appreciated... should I RMA these sticks??

What is the turnaround like in Australia? And where do I have to ship it off to?

[d0rift]

Bump....I'm guessing everyone is on holidays?

[pagla]

Very similar problems still for me as well. Bios F6. even with loose timings, I still get memtest86 errors. Sometimes memtest will work for 12 hours straight. Shut computer down. The next morning, memtest detects 80 errors by test 4.

I've decided to RMA the memory based on G.Skill admin suggestion.

[d0rift]

Hmm ok...i guess I'll RMA also..

I'm interested in how your new sticks will do..