- Joined
- Jan 10, 2002
- Location
- Dublin, Ireland
Dual DDR is being used for the P4 as the bandwidth of a 533MHz FSB P4 is not met by a single DDR channel, but would be met by a dual DDR channel controller as there is twice the bandwidth from it.
My question is, could you run an Athlon at a very high FSB, run the memory slower, but use dual Channel DDR mobo, such that the Bandwidth needs of the CPU are still met by the bandwidth from the two channels of DDR?
E.g.:
CPU bandwidth:
(64/8)*400FSB = 3200
Memory bandwidth:
(64/8)*266FSB*2channels = 4250
So by using dual PC2100 DDR (cheap enough), you can still provide enough bandwidth for the 400MHz FSB of the CPU, with almost a 1/4 of the memory bandwidth to spare.
Is this theory correct, or am I missing a bit which makes it all do-do?
My question is, could you run an Athlon at a very high FSB, run the memory slower, but use dual Channel DDR mobo, such that the Bandwidth needs of the CPU are still met by the bandwidth from the two channels of DDR?
E.g.:
CPU bandwidth:
(64/8)*400FSB = 3200
Memory bandwidth:
(64/8)*266FSB*2channels = 4250
So by using dual PC2100 DDR (cheap enough), you can still provide enough bandwidth for the 400MHz FSB of the CPU, with almost a 1/4 of the memory bandwidth to spare.
Is this theory correct, or am I missing a bit which makes it all do-do?