New Build - Ram Problems

GirMoose

GirMoose

GirMoose

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Joined
26 Aug 2008
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I posted on the corsair forum about this too, so I'll put the same here. I have no idea what to do with it now. I've never encountered a problem like this before:

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Ok, im completely stumped.

I have Asus p5q-e updated to latest bios, 64bit vista and 8gb (4x2gb) of 6400c4dhx.

I set it up all normal with 2 sticks in and 800mhz 4-4-4-12 2.1v and it works flawlessly.

I put 4 sticks in, move it down to 667mhz and up the NB voltage and the system just completely sucks. Takes about 10 minutes to get into windows (its a clean install) once in windows everything is juddery, the cpu is at almost constant full usage (may be windows trying to figure out whats wrong though, not sure) yet the memory usage is at about 1gb.

Bear in mind its not the windows instal, as it works fantastically with 4gb in.

Does anyone have any possible suggestion as to what might be the cause?

While waiting for replies im gonna try run 3 sticks to see how that boots. I will update shortly.

Help!
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Ok, just tried with 3 sticks. Took two out and tried them both individually in both free slots. So stick3 in slot 2 and 4 and stick4 in slot 2 and 4.

Each time exactly the same. Windows runs rediculously slow (didnt actually get into windows on any of the attempts. Its pretty obvious after 1 min loading something is wrong when it is in windows in about 20 seconds max with 2 sticks.)

I cannot possibly thing what the problem is. Doesn't seem to be the ram slots as tried both. Doesnt seem to be the ram itself as I have tried swapping them all around, its only when there is 3 or 4 sticks in that the problem happens.

:(
Click to expand...

Not much activity over on the corsair forum so maybe someone here can help me :)
 
Each one is a - CM2X2048-6400C4DHX - bought them all aty the same time in 2 sets of Twin2x
secone line is
xms2-6400 2048mb 800mhz 4-4-4-12 2.10v ver1.1 08263283
 
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I'm no expert but have you tried each stick on its own to see if there's a bad stick?

Could just be a bad set.

Sorry cant be more help!
 
At request of someone on the corsair forums, so thought may be useful here:

Everest Benchmark with 2 modules (4gb) :



Everest Benchmark with 4 modules (8gb) :




I know the bottom half of the second image got cut off, thats because it froze for ages while trying to save the screenshot :/

Hope this helps people with some suggestions, but its starting to look like the bios cannot handle the 4 sticks. Which is quite odd given it is fairly standard corsair ram and it is listed as compatible
 
As another update: I tried an older bios - same problem.
I tried the modded bios by ket on XS - same problem.

Is it possible the Motherboard is faulty?

=== edit below ===

Just to be double sure, I took the 2 modules that I had been putting in to make 8gb and tried them in place of the normal 2 i had been using (yellow slots) - worked perfectly. Tried them on their own in the Black slots too - works perfectly. So the ram works. The black slots work, the yellow slots work. But when they are all combined it fails miserably.
 
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Ok, - update again - I reset the bios back to the original release bios 0603 i think it was, and now it works... So the newer, more compatible one, caused this error. No idea why, but there you go.
 
Odd is indeed the way to describe it. I'm just confused as to how it would boot and run (althought cripplingly slow). I would assume if the bios isnt compatible it would just not run at all. Kinda annoying in one sence, the early bios probably isnt going to be as good for overclocking once i get my new heatsink and replace the stock one :(
 
Maybe try the second newest BIOS. The very latest may have introduced a bug with your set-up.
 
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