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Really strange problem with DS3

J

jjssmith

Junior Member
Hi, AT gurus!

I've recently bought DS3 motherboard. And it has the strangest bug I've seen.

I started by testing memory with memtest86+ (v1.65). In approximately 10-15% of cases test #7 fails at address 24042048 (576.1MB) bit 08000.

I switched the sticks. Still it fails at exactly the same addres.

I moved sticks to a different pair of slots on the motherboard. Still it fails at exactly the same address.

I flashed the recent (F7) bios. Still it fails at exactly the same address.

I upped VDimm by +.1, +.2. Still it fails at that darn addr.

Northbridge temp (as reported by bios) is around 38-45 at all times...

Memory modules are Kingston DDR533 Value Ram (KVR533D2K2/1G). No overclocking of any kind! (stock voltages, fsb speeds, memory timings are all set to auto etc). CPU is stable in Orthos (goes to +55 C max).

What is it?! Obviously it's not the memory (switched sticks -- address same). Not CPU (too rare a bug if CPU would be involved). Memory controller failing at exactly one addr???? Well, that's the only thing left...

What do you think? Should I replace the motherboard?
 
Try testing one stick at a time. 😉

If both sticks have the same issue separately and in different slots then your motherboard is defective.
 
Yep, doing it now. The problem is that the address 576.1 Mb is above 512Mb thus it is likely that one stick simply won't activate the bug...

 
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