[rescue] Fast MBus modules (was Re: Big Iron available in/near Minneapolis)

Steve Sandau ssandau at gwi.net
Sat Jul 28 15:26:11 CDT 2007

>>> Speaking of SC2Ks, I found a couple of CPUs labeled "85MHz 2MB" in my 
>>> Sun box at work. As I recall from earlier CPU cache discussions on this 
>>> list, the SC2K is the only machine that will use all the cache.
>> Indeed, the SC2K is AFAIK the only machine that'll use all the cache on the
>> SM81-2. They will work in SS20s (and possibly other MBus-module accepting
>> machines), but with only 1MiB of the cache in use. Oh, and they'll run damn
>> hot in an Aurora chassis too :)
> I picked up a pair of SM91-2's on eBay years ago. They do indeed work in
> an SS20 -- for a while. Then I think the heat catches up with them...
> Every time I installed them (I must've tried singles and pairs) it would
> be fine, I'd go do something else, and I'd come back to a locked up machine.

I have had the same experience with 80MHz CPUs in my SS20. I finally had 
to settle for 2x50MHz and some stability instead.


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