🚀 go-pugleaf

Jason Patterson <jason@pattosoft.com.au> wrote:
...
> 
> More specifically...
...
>  generation: sun4m high-end (1992 - 1995)
>  machines: SS10, SS20
>  processor: SuperSPARC (ss) or HyperSPARC (HS)
>  microarchitecture: superscalar (3-issue for SS, 2-issue for HS).
>  clock speed: 36 - 85 MHz for SS, 66 - 200 MHz for HS
>  multiprocessing: up to 4 processors per system
>  performance compared to competitors of same generation:
>    SS is 50% faster than Pentium at same clock, but only goes to 85 MHz
>    HS is 20% faster than Pentium for int, 2x for fp
>    SS is 80% faster than PowerPC 601 (PowerMac 6100-8100)
>    HS is 50% faster than PowerPC 601 (PowerMac 6100-8100)
>    Both are 50%+ slower than Alpha 21064 because of Alpha's faster clock
>  notes: Cheap multiprocessor capabilities and large RAM capacity will keep
>    these systems viable for a long while yet. A 200 MHz HyperSPARC still
>    outperforms the fastest Pentium's, and you can have up to 4 of them!
...

Hello Jason!

You write, that a 60MHz SuperSparc would equal a Pentium at 90MHz, which
I don't doubt. But concerning the PowerPC 601 which - according to your
calculation - should reach this speed at 108MHz, I must contradict you.
From my own experience, a PPC601 at 66MHz roughly equals a Pentium at
90MHz (both Systems running with L2 Cache, which originally only was an
optional feature with the 6100..7100 PowerMacs).

Timo

-- 
Timo Hoepfner - t.hoepfner@iname.com