Path: utzoo!attcan!uunet!aplcen!uakari.primate.wisc.edu!zaphod.mps.ohio-state.edu!usc!apple!voder!nsc!levy
From: levy@nsc.nsc.com (Jonathan Levy)
Newsgroups: comp.sys.nsc.32k
Subject: Re: anyone have thoughts re ...
Message-ID: <14029@nsc.nsc.com>
Date: 5 Jun 90 16:37:56 GMT
References: <9006042014.AA14006@hpcsbg.col.hp.com>
Organization: National Semiconductor, Santa Clara
Lines: 20

In article <9006042014.AA14006@hpcsbg.col.hp.com> bdale@col.hp.com (Bdale Garbee) writes:
>> 1) whether the pc532 can get by without a fan
>>    (if not, what's recommended air flow ?)
>We mounted our PC532 boards in PC tower cases, which normall. In all
>power supply only, exhausting air from high in the box.  The CPU/FPU seemed
>to be running warm, so I added a 12V, about 25CFM fan to the bottom front of

I have worked with systems which incorporated the 532, GX32,
and GX320 (yes, the newly announced CPU, code name Barracuda). In
all the CPU/FPU tend to get very hot to touch, 
but none the less, work flawlessly
at room temperature with no fan. The 532 on my desk used to work
for days on end at 30Mhz with no problems. We also have a GX32 
system running MicroSoft/Bauer Postscript compatible PDL at 30Mhz 
with no fan. This system is very reliable. 

This is not to say that a fan is not a good idea, but to reasure
you that it is quite normal for the 532/381 to get hot. 

Jonathan