14 Nov
2008
14 Nov
'08
6:05 p.m.
Dave McGuire wrote:
On Nov 14, 2008, at 10:00 AM, Curtis H. Wilbar Jr.
wrote:
Just avoid the SM100 modules like the plague...they were slower than
pissing tar. You could take an SS20 (or an SS10, or a 4/600MP) to
four processors that way, but they were painful to use. They were
sold by Sun but based on an early Ross chipset, though I don't recall
which one.
Myself and a coworker (@ Sun) took a SS10 that had dual SM41s, and
tried the dual SM100 modules for 4 processors !!!.... we quickly
put the dual SM41s back in.... two SM41s were better than the
4 cpus the dual SM100 mbus modules gave !
We also tried 16MB 30 pin simms in a sparcstation 2.... err... that
didn't go well... bye bye SS2 mainboard !
-- Curt
I think
the 20 can actually do quad-CPU; while it has only two Mbus
slots, I seem to recall that someone made Mbus modules with two CPUs in
a single Mbus form factor.
It can do quad... Sun had the SM52X (2 SM51s on a almost
double wide cpu card... you could the put two of them in.
Downside was you lost 2 sbus slots. The Sun sold Hypersparc
module HS12 was a dual 100mhz cpu (I believe it was normal
width... so you didn't lose sbus slots to go quad).
-Dave