Phillip Ezolt wrote:
>
>
> I am not sure of the design of the UP2000, or XP1000, but I know that
> other alpha platforms use something called "memory interleaving".
Right. But, the XP1000 and UP2K both do 4 way DIMM interleave, which
is really 8 way because a DIMM is already two way. Once you get to
that point, how would you gain anymore performance? That would
take another D-chip, if I remember the Alpha's chipset terminology.
And, that is what makes the DS20/DP264 different from a UP2K
since it does have two chips for accessing memory, but it also uses
16 DIMM slots, 8 for each chip.
Also, both XP1000 and UP2K do not require the DIMM's in between sets to
be the same which to me, indicates the banks are quite separate. The
only requirement is that each set of 4 is identical.
Also, if it were true 8 way improved speed, then how come the specs
don't say that?
Wes
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