Dennis E Strausser Jr wrote:

"Johannes H Andersen" wrote
in message news:410AF477.32FAE761@nsuvuooiaiosizefitterwiuove swernuaz.com...


JK wrote:

The dual channel of the P4 is relatively slow though since the
memory controller is not on the chip. Look at the actual benchmarks
comparing the two. The article has benchmarks for both socket
754 and socket 939 Athlon 64 chips.

http://www.anandtech.com/cpuchipsets...spx?i=2065&p=1

So?

The dual channel memory 2xDDR400 for the P4 matches the fsb = 800 MHz,
this is the optimal situation.
The P4 is not 800 fsb, it's 200
It works something like the Athlon Xp, but does it twice.

Yes, yes but...

The P4/800 still matches dual channel memory 2xDDR400 optimally with a max
memory bandwidth of 6.4 GB/s. The AMD socket 754 doesn't.

Whether you then call it 800 fsb or 200 fsb is a matter of semantics. The
clock multiplier is indeed applied to 200 MHz, but dual channel DDR gives
you the 800 MHz data rate.