1U P4 Systems

[Josip Loncaric]

Steve Gaudet wrote:
> 
> Based on the current P4 die won't see the P4 in anything smaller than a 2u.

Except for the P4/1.4 1U RackSaver link posted by Tim...  However,
cooling a 1U case concerns me.  The RackSaver RS-1100 claims to have 6
small case fans (> 40 cfm total), and a 250W ATX12V power supply.  I
understand the need to be space efficient, but I'd feel more confident
about cooling with larger cases...

Sincerely,
Josip

P.S.  RackSaver uses P4/1.4 which can dissipate 51.8W.  By contrast, the
P4/1.7 can dissipate 64.0W in normal use, i.e. more than a fairly large
soldering iron...  BTW, this 64.0W is Intel's "thermal design point" for
the P4/1.7 processor.  Their "thermal design point" is based on 75% of
the maximum power dissipation (which could reach 85.3W, lead to internal
hot spots, etc.).  Intel claims that most popular applications
(including SPEC benchmarks) fall below this 75%.  However, ATLAS and
some other cache optimized codes can seriously stress this
assumption...  Excellent cooling is essential when doing very intense
computations.

-- 
Dr. Josip Loncaric, Research Fellow               mailto:josip at icase.edu
ICASE, Mail Stop 132C           PGP key at http://www.icase.edu./~josip/
NASA Langley Research Center             mailto:j.loncaric at larc.nasa.gov
Hampton, VA 23681-2199, USA    Tel. +1 757 864-2192  Fax +1 757 864-6134