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Athlon MPX motherboards and RAM

T

TerryMathews

Lifer
This isn't a troubleshooting question, or at least it's a bit higher level than most so I hope it's OK. 🙂

I know that some normal motherboards support 3 DDR sticks, but require more voltage for the system to stay stable. My A7M266d's manual says that it will work fine with two unregistered sticks, but for 3 or more they must be registered. I was wondering if this was the same phenomenon, and if so if I could side-step it by increasing Vdimm, which my motherboard supports.

I'm really not liking the concept of buying at least two 512MB registered sticks vs. one more unregistered 256MB one.
 
The register chiplets on these DIMMs electrically offload the system RAM bus. With unbuffered DIMMs, the more RAM devices you connect, the worse does the signal integrity get. Raising the signalling voltage is just a bit of trickery to mask the symptoms a little, but it doesn't solve the problem.
 
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