[rescue] Q: Preparing for SS/20 build tonight...
Janet L. Campbell
janet at foonly.com
Fri Feb 6 12:57:31 CST 2004
On Fri, 6 Feb 2004, Jonathan C. Patschke wrote:
> On Fri, 6 Feb 2004, Francisco Javier Mesa-Martinez wrote:
> > ROSS HyperSparcs can go up to dual 200Mhz, I dunno if that may cause a
> > meltdown... but as far as I know that would be the top config for a
> > SS10/20
> Alex Avriette (formerly on this list) runs such a machine right now.
> The machine that cooked itself (if I remember correctly) was the
> quad-80MHz SuperSPARC-II with dual internal Seagate ST15150N disks.
There's no such animal (quad 80MHz SuperSparc-II). The only SS20 quad
SuperSparc configurations sold by Sun used the double-wide 50MHz
SuperSparc-I's, though there was a 60MHz version in development based off
of the SM61. The SM81 CPU modules were 85MHz, derated from their original
goal of 90MHz (and never qualified for the SS10/20, though they work fine
anyway with a boot ROM that supports the SuperSparc-II).
The Ross modules do come in very high speeds, but they also have less
internal parallelism and suffer from Mbus saturation when code busts the
If I wanted the most possible CPU power in a SS20 chassis, I'd take a
SparcEngine Ultra 20 board and use it instead. They're kind of rare,
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