On Fri, 24 Mar 2000, John A. Maier wrote:

> Why is the Alpha so much slower that the P-75?

It's a 21066, not a 21064. The 21066 is very, very slow when
accessing the memory and second level cache, and this cripples its
performance. (A 486 accesses memory/cache close to twice as fast,
and a Pentium about three times as fast.)

If you're doing something that remains entirely in the first level
cache, you'll notice that a 166 MHz 21066 is about as fast as a
P133. For anything that doesn't fit, you'll find it performs on
par with a high-end 486.

You can run lmbench to get exact numbers for memory and cache access
speed.

cjs
-- 
Curt Sampson  <cjs@cynic.net>   917 532 4208   http://www.netbsd.org
      «Quand on veut un mouton, c'est la preuve qu'on existe.»