RAM limitations for S939 systems?

[BCinSC]

I vaguely recall there being some limitation, or at least speed differential, when using Double Banked DIMMs on some Dual Channel SocketA boards. Can someone clarify that issue and whether it exists for A64?

 

[amol]

when you fill up all 4 DIMM slots, the RAM will run at DDR333 (PC-2700)

 

[jose]

On the A8N you can only use 2 dimm slots if you have 1 gig dimms... total 2 gigs.

 

[Gamingphreek]

Also in some cases the Command rate is automatically reduced to 2T which makes it much slower (Not as bad on A64 but KILLS the P4 and AXP) because instead of transmitting data on the rise and the fall of the clock it transmits only on the IIRC rise.

-Kevin

 

[Algere]

Don't know where I saw it but the new (unless new is now?) A64s are suppose to address/fix this issue.

 

[gotsmack]

Originally posted by: Algere
Don't know where I saw it but the new (unless new is now?) A64s are suppose to address/fix this issue.

it was on the INQ. only for new stepping AMD CPUS. dunno if the new stepping has been implemented yet. definately by mid year when the intro dual core cpus.