CPU vs DSP

[Stephan M. Sprenger]

Angus Hewlett wrote:
> 
[snip]
> I don't want to be accused of trying to compare apples with oranges -

The problem is that you're NOT comparing Apples at all. ;-)

> though I'm sure somebody will - I just want a _rough_ figure as to how
> much is acheivable on 2 PII's at 400MHz versus 6 SHARC's at 66.

I don't have the numbers for a PC, but the informal bechmarks I ran here 
between a 21061/40MHz SHARC and a Macintosh 7100/80 (a PPC 601 processor 
@ 80MHz with 256k 2nd level cache) is that they perform approximately 
equal (C code on both processors and a realworld application, not some 
narrow 'fp only' tests or the like). The C compiler from AD isn't very 
good at optiomizing code, so this figure is very crude and may be 
significantly better with asm optimization.

Just my 2 cents (1/50 of a semitone)

Stephan
-- 

Stephan M. Sprenger
Director, R&D                                  http://www.prosoniq.com
PROSONIQ PRODUCTS SOFTWARE                     http://www.prosoniq2.com