Re: G3 upgrade L2 cache

[Jan-Hinrich Fessel <oskar%fessel.org@localhost>]

Am 20.04.2009 um 17:19 schrieb Havard Eidnes:

> > > > I just pulled the card.  It's a "Sonnet Crescendo G3" and the
> > > > sticker also says "300/512".  [...] assume the 300 is the clock
> > > > speed and the 512 is the cache size.  This helps, but still leaves
> > > > me wondering what clock ratio to use and which of the L2RAM values
> > > > it wants.
> > > According to that web page, the 512k cache Crescendo G3's L2 runs at
> > > 150 MHz (2:1).
> >
> > Well, according to that page, there exists a 300MHz Sonnet G3 card  
> > with
> > 512K of cache running at 150MHz.  Lacking any particular reason to
> > think there exist no other Sonnet 300/512 cards, I'd been considering
> > this nothing more than a hint - especially since it says "Crescendo
> > PCI", and my card is not marked "PCI" as far as I can see.
>
> If I recall correctly, this is a matter of nomenclature.  What I
> think this means is that this is a CPU card for a "PCI" MacIntosh
> model, where 7600 is one in that family; I beleive this model was
> among the first MacIntosh machines to have a PCI bus.
I think the crescendo PCI was for the Macintoshes with non-replaceable  
CPU's - you could plug them into a free PCI slot and disable the  
onboard CPU.  If I remember correctly the 6400 was such a beast.

But the L2 cache was identical, AFAICR.

Cheers
        Oskar

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