[RC5] Athlon XP/MP even faster? K5 faster than K6!

Greg Wooledge greg at wooledge.org
Thu Oct 18 20:12:36 EDT 2001

Kagain (kagain at gmx.de) wrote:

> AMD K5 200MHz 434,804 keys/sec: ~2174 keys/sec/MHz
> AMD K6 200MHz 330,745 keys/sec: ~1653 keys/sec/MHz
> ?? Comparabel with Intel nowadays or was the K6 bad in general ??

No, the K5 was just lucky.  They have a fast hardware rotate instruction,
etc.  Per-MHz, they're the fastest general-purpose chip for RC5 as far
as I know.

And an Alpha or UltraSPARC will leave it in the dust on DES.

Greg Wooledge                  |   "Truth belongs to everybody."
greg at wooledge.org              |    - The Red Hot Chili Peppers
http://wooledge.org/~greg/     |
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