Subject: Re: Sparc 20 hypersparc vs Ultra 2
To: Timo Schoeler <timo.schoeler@macfinity.net>
From: Michael <macallan18@earthlink.net>
List: port-sparc
Date: 06/20/2005 07:45:20
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Hello,

> i have a SS20 with Dual 85MHz SuperSPARC II (those weren't supported
> by SUN IIRC because of the huge amount of heat they generate) which is
> faster than a 200MHz HyperSPARC dualie of a friend. as a rule of thumb
> one can say that the SuperSPARC II is at least as fast as a HyperSPARC
> with twice the clock.

That bad? I've read that HyperSPARCs do less work-per-clock than
SuperSPARCs but I thought that's compensated by their much higher clock
speed. ( reminds me of the Pentium 4... )

> so best bet would be a U2 with UltraSPARC II (300 or 400MHz, the
> latter ones far more expensive than the 300MHz). avoid UltraSPARC I.
> and pray for the NetBSD guys to get SMP running on sparc64 ;)

Yes, I have an U1 (UltraSPARC I) and a U10 (UltraSPARC IIi) here, the
U10 runs at ~twice the clock as the U1. Depending on what you do with
them the speed difference can be anything between the U10 barely beating
the U1 and the U10 running circles around the U1. Purely CPU-bound tasks
will be much faster on the U10 though.
So I guess an U2 with UltraSPARC II CPUs would be the most sensible
choice here ;)=20

have fun
Michael

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