🚀 go-pugleaf

In <4p1i9s$5tkiyt@aztech.ba.md.us> michael@aztech.ba.md.us (Michael of Nebadon) writes:

>[ Follow-ups to comp.sys.sun.hardware ]

>I recall that Sun sold a 4/310... a 4/3xx board in a 4/110 chassis.

Like a 4/1xx, a 4/3xx can also be used as a single-board system. It's
possible to even run a 4/3xx in a 3/60 chassis! I've run 4/1xx boards in
3/50 and 3/60 chassis' before without any problems. 

>Has anyone out there tried a 4/4xx or even a 6xx in a 4/110? The
>boards should fit physically, so it seems to me that power or
>cooling would be the only possible problems. Even if one or both
>is a problem, I would think that could be worked around. Or is
>there something else I haven't considered?

The problem is that a 4/4xx, and I presume 4/6xx too, requires external
RAM boards, and external SCSI, ESMD, IPI, etc. boards. The 4/3x has SIMM
support instead of ECC RAM support, and it has SIMM sockets on-board, as
well as SCSI support. I don't know if a 4/6xx board has SCSI or not. A
4/110 chassis is only 3 slots, so once you plug in a RAM board next to the
CPU board you don't have room for anything else. 

The 4/4xx board draws about 3 times as much power as a 4/1xx too. 
Considering that the CPU clock on a 4/4xx is 33 MHz as opposed to 14.28 on
a 4/1xx, that accounts for a large chunk of the increase just by itself. 

Regards,

Craig.
-- 
        Craig Dewick - craig@zeta.org.au - http://www.zeta.org.au/~craig  
                          Located in Sydney, Australia.
          Sun Ripened Kernels - http://www.zeta.org.au/~craig/srk.html
                Surplus and pre-loved Sun Microsystems equipment.