Possible Faulty DIMMs - In A Weird Way...

[Lord Spatula]

I have a pair of XMS3200 512MB 400MHz TWINX CMX512RE-3200LLPT DIMMs that I think are faulty, but in an odd way. I have tested in an ASUS K8V Deluxe, and a Gigabyte GA-K8NNXP, both boards with an Athlon 64 3200+ CPU, and an ATI Sapphire Radeon 9600 Atlantis graphics card and get the same problem with both systems.

 

If both DIMMs are in the system then neither will boot, and the ASUS board using the ASUS vocal POST reporter tells me the CPU is overclocked(!!). However, if only one of the DIMMs is used, then both systems boot properly, and work as expected. The weird thing about this is that this is the case no matter which of the DIMMs I use - I only get the errors when both are inserted! However if I use other makes of RAM, - singly, in pairs, or with all three slots filled - (I've tried Infineon, Samsung, and some other generic makes ranging in speed from 266MHz through to 400MHz), then the systems behave properly too...

 

In addition, I've benchmarked the ASUS based system with Aquamark3, with either of the DIMMs in it benchmarks at around 11,000, however, with a 512MB 266MHz Samsung DIMM in, it benchmarks at just over 13,000 (Not that benchmarks mean a huge amount!)

 

What should I do next?

[CMC_SAVAGE]

The RAM is probably fine.

Both of those boards don't support "Registered" memory.

It's sometimes common to be able to run with 1 module, even though it's not supported.

[Lord Spatula]

The RAM is probably fine.

Both of those boards don't support "Registered" memory.

It's sometimes common to be able to run with 1 module, even though it's not supported.

 

Thanks for this - thought I was doing something stupid, but couldn't work out what!