Is my Corsair memory faulty?

IYoung

IYoung

IYoung

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23 Mar 2006
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17
..or is it my motherboard :confused:

I built a new computer system around a month ago consisting of;

Gigabyte GA-EX58-EXTREME motherboard
Intel Core i7 920 D0 Stepping (SLBEJ) CPU
6GB Corsair Dominator 1600MHz DDR3 TR3X6G1600C8D Memory

Since then I've been having lots of problems with random system freezes and restarts. Usually when the system froze I'd get lots of loud crackling/popping noises and suspected a dodgy soundcard, so I removed the Ausentech Prelude soundcard and reverted to the onboard sound - but the problems remained.

I have tried using the system with and without overclocking but again the lockups & freezes remain.
The memory is running at 1.64v.
I have watercooling attached to the CPU, MB and GFX, CPU runs around 33deg idle/ 48deg under load.

So, what I have noticed is;

1 - sometimes on bootup when the bios screen displays the memory and drives etc it only shows 2gb or 4gb of memory, even though there is 6gb installed.

2 - This can also be seen in memtest here;
MEM1.jpg

3 sticks installed - but only 2gb showing in use:(

3 - When all 3 are showing in the system Memtest reports various errors;
MEM2.jpg


4 - I tried testing each stick on it's own in slot1 on the motherboard for over an hour each and none of them came up with any errors:confused:.

So, I'm really at a loss here as to what the problem is. Are there any further tests I can carry out to find out if it's the ram causing the problem, or does it look as thought the motherboard could be faulty? Maybe I need to run with different bios settings, but I'm fairly sure everything is configured correctly.

Any help here would be much appreciated.
 
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/bumpity bump :).


I've managed to get some stability by underclocking the ram to 1140mhz (190 x 6), but if I go any higher than that either by higher multiplier or by selecting the XMP profile the system is very unstable. I have the CPU core @ 1.4v and have tried the QPI/Vtt at each setting between 1.175v and 1.475v. I've kept the DRAM voltage @ 1.64v all the time, I know it's rated for 1.65v but the next setting available in the bios is 1.66v.

After delving around a bit it looks as though a lot of people have had problems with this memory :(, it looks as though I'm going to have to send it back but I want to make sure I test it thoroughly to make sure I'm sending the right thing back, and it's not the motherboard causing the problem. I've changed the power supply with one from another similar spec computer and the problem stays the same, so PSU can be ruled out.

Anyone able to suggest anything here?
 
IYoung said:
/bumpity bump :).


I've managed to get some stability by underclocking the ram to 1140mhz (190 x 6), but if I go any higher than that either by higher multiplier or by selecting the XMP profile the system is very unstable. I have the CPU core @ 1.4v and have tried the QPI/Vtt at each setting between 1.175v and 1.475v. I've kept the DRAM voltage @ 1.64v all the time, I know it's rated for 1.65v but the next setting available in the bios is 1.66v.

After delving around a bit it looks as though a lot of people have had problems with this memory :(, it looks as though I'm going to have to send it back but I want to make sure I test it thoroughly to make sure I'm sending the right thing back, and it's not the motherboard causing the problem. I've changed the power supply with one from another similar spec computer and the problem stays the same, so PSU can be ruled out.

Anyone able to suggest anything here?
Click to expand...

Hi , if its an early batch then it may be faulty as they did have trouble with the early IC's , i did and they changed them for me ,no problem since.



http://forums.overclockers.co.uk/showthread.php?t=18029457&highlight=yellowbeard

Although reading the thread from corsair yours aren't listed as being effected
 
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Yellowbeard said:
These modules did not have the defective Elpida ICs.

IYoung, try clearing your CMOS to reset the BIOS, reboot, and enable the XMP profile and see if it works.

Also, this thread may be helpful: http://forum.corsair.com/forums/showthread.php?t=82274

The link is for 12GB but, the fundamentals are the same.
Click to expand...

Hi Yellowbeard, I hope you don't mind but I did post a thread about this on your forums too, to try and get to the bottom of this asap, the thread is here; http://forum.corsair.com/v3/showthread.php?t=82255
 
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