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XMS2 Memtest Errors


nheather

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Not a warranty request yet, just seeking advice and opinion.

 

I have built a new PC, no overclocking at all, everything at stock.

 

The build appeared to go fine, but I got BSOD when playing the game Crysis.

 

It was suggested that I test the memory so I ran MemTest86+ 2.11.

 

This immediately showed fails in Test #7.

 

I then tried to work out which stick was at fault, so ran each individually.

 

They both passed - regardless of which slot I used.

 

I tried the the two sticks in DIMMs 2&4 rather tha 1&3 - failed again.

 

Doesn't fail all the time. For example, I left running over night and I had 14 passes and 19 fails. All fails are on Test #7.

 

DDR2 Voltage is set to 1.9V which registers in Everest as 1.92V.

 

I've tried increasing to 1.95 (1.97V) but this didn't have any improvement.

 

Any suggestions of what I can try?

 

Cheers,

 

Nigel

 

 

P.S. When I tested the RAM individually, I didn't do prolongued tests - about 3 or 4 passes - I didn't do any more because if both sticks had of been in then they would have failed by then.

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I'm running MemTest with the memory clock set to 1:1 (666MHz) rather than 1:2 (800MHz) to see whether that passes.

 

If that does, I will try pushing the voltage upto 2.0V.

 

I must admit that I was a little worried about increasing the voltage but then I read your sticky

 

http://www.asktheramguy.com/v3/showthread.php?t=38201

 

which says

All of our modules are rated up to 2.9 Volts

 

that socked me, impressive stuff, wouldn't have beleived it had it not been on the manufacturers forum.

 

So if it is rated upto to 2.9V then 2.0V should be a walk in the park.

 

Cheers,

 

Nigel

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That thread is referring to DDR1 and not DDR2/3. DDR1 is rated to 2.9v, DDR2 is rated up to 2.1 or 2.2v. So you're still well within spec.

 

I've removed that info from the thread. FYI that comment had a link right after it going to the tested specs of each part #.

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No probs - I was just being a bit cheeky :evil: - I didn't really believe that it would go to 2.9V.

 

Anyway, my RAM passes MemTest at 666MHz and also I noticed that it did it at 1.8V because I'd left voltage on automatic.

 

So it will be okay to try 800MHz at 2.0V?

 

Cheers,

 

Nigel

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Thanks,

 

Yesterday I set the DRAM ratio back to 1:1.2 (800MHz) and started increasing the DDR2 voltage. The MemTest results were as follows

 

1.90V - FAIL

1.95V - FAIL

2.00V - FAIL

2.05V - FAIL

2.10V - PASS

 

I left it running overnight at 2.10V to be sure and in the morning found that there had been no failures.

 

So in part good news but I'm a little concerned that I have to run the memory right up to Corsair's rated limit, especially as I'm running at stock - no overclocking or tightened timings.

 

Is it okay to leave it running like this or is there a risk of damage?

 

Cheers,

 

Nigel

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