[SunRescue] Help booting 64bit kernel on an Ultra

[Gregory Leblanc]

What bearing could a fan possibly have on how much heat a processor
produces?  It might effect how well that heat is dissipated, but produced?
Now, towards the end of a production run, they might have gotten smaller die
sizes (via smaller transistors) which could reduce heat, but Sun doesn't
make as big a deal of technical details on processor production as Intel
does.  On heat on the SS20s, I would expect the SuperSparcs (I or II) to be
much hotter than the HS because of the huge  (and HOT) cache controllers on
these.  I can only assume that the HS don't have such large cache
controllers, since they are able to put two HS into a single MBUS slot,
where the SS chips can't do that (too big).  Anyway, just my two pence...
	Greg

> -----Original Message-----
> From: j. grubman [mailto:jg at false.net]
> Sent: Tuesday, September 07, 1999 3:53 PM
> To: rescue at sunhelp.org
> Subject: Re: [SunRescue] Help booting 64bit kernel on an Ultra
> 
> 
> > Anybody else noticed that an Ultra 1/140 puts off a LOT of 
> heat?  I mean,
> > I could keep my coffee warm next to the CPU... considering I've only
> > got a 4.5gig HD and two 64mb DIMMs in here, along with a 
> CG6, I'm really
> > surprised at how much hot air it puts out (more than a ss10 
> with dual
> > 150mhz HyperSPARCs and a ZX..)
> 
> My 1/170 w/ two 9 gig drives and a creator is exponentially 
> cooler than 
> my old SS20 w/ dual HS 150's and the same disks. My bedroom 
> was noticably
> cooler after getting rid of the SS20. 
> 
> Does your 140 have a fan (mine does)? For whatever 
> engieering/design reason,
> Sun stopped using fans on the Ultra1 processors towards the 
> end of production.
> I'm not sure if that fact has any bearing on how much heat 
> they put out...
> 
> -josh
> 
> ---
> joshua grubman
> http://sarcastic.net
> 
> 
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