m wrote:

Hm,

that thought about hyperthreading in P4s is touching on a thought I had. The
P4 laptop I have tried running units on (2.8GHz, 1GByte 266MHz RAM) seems
rather disappointing relative to a 1.2GHz P3 laptop I've used. I was
wondering whether running 2 clients in parallel (i.e. 2 separate caches)
would produce a < 2x processing time per unit. Anyone tried this? I'm
reluctant to embark on this as the max. daytime temperature here is Southern
England is well into the 30s Celsius at present.

Yep, It's hotter than normal over here.  34C in my main PC room with
the Aircon running on full and an extra fan:-(

I believe the Hyperthreading only applies to the xeon version of the
P4 - Very expensive server version.  Not the normal home version and
almost certainly not the mobile version.  But I could be wrong.
-- 
Dom