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system memory DDR is dead slow >>
As for that the memory subsystem Includes the following RAM/CACHE/PROCESSOR/chipset/
and knowing this you say thats its the DDRsdram with 2.1gb/s bandwidth that is slow.
I think not my friend.
The athlon/pentium3 processors were not developed with high bandwidth memmory in mind so they cannot fully use the potential that the memory has.
on the other hand the P4 was and it does use the potential that rambus has.
and that is why you see the difference.
the p4 has an excellent memory subsystem. Howerever its the rest of the p4 architecture is not on par with the memory subsystem and that is why i say who care's what the p4 memmory subsystem benches.
I will agree with you that the athlon doesnt have the greatest memmory subsystem. And that is the exact reason why You need to use the best platform for the Athlon to overcome the shortcomings of the athlon processor.
INless of course you would like to take out a second loan on your house and get a P4!
