Bad Memory or Mobo

[ssbsts]

I have recently build a new system and I decided to run a memtest. My memory is corsair xms2 2x1gb ddr2 675. My mobo is a gigabyte 965p-s3. So it made it through most of the tests and at test #7 it just starts throwing errors like crazy. I am thinking that the memory is bad and i am going to have to rma it. But then i decide to take one stick out and just run in single channel and see what happens. The memtest runs through a couple passes and not a single error. So i take that stick out and throw the other one in. Same thing, couple of passes and no errors. So now i am wondering what is going on. So i put each individual stick in each individual slot and run the test(eight different tests) and each one runs perfectly without any errors. So by this point i am starting to think that it is not a memory issue. I put both sticks back in and run a test and it runs just fine, no errors. Then i run it again, and this time at test #7 there are a bunch of errors again. I am pretty bummed on the whole situation.

So at this point i am just wondering if anybody might know of a fix or if somebody can definitively diagnose the problem. Appreciate any advice.

Thanks.

 

[Warpy]

My mate has the same problem with OCZ RAM. He had it RMA'd and that did fix it, it may be a faulty DIMM slot (bank) but more likely to be the RAM running in dual channel. Have you manually put the RAM timmings into the BIOS istead of leaving it on AUTO?

 

[ssbsts]

At first i had it as auto, but then i manually set the timings to 4-4-4-12. I also upped the voltage for the memory by 0.1v because im pretty sure the default is 1.8 and the memory is supposed to run at 1.9v. This is my first completed build, so forgive me if i sound like i dont know what i am talking about, because for a lot of things i probably dont.