| From: | Nick Lamburn |
| Date: | 7 May 2000 at 19:26:11 |
| Subject: | Re: Quake speeds. |
Hi Alan
>> The 604e has a 64BIT bus and 64BIT instruction set, the 603e a 32BIT bus
>> and a 64BIT instruction set.
>
> the 64bit instr set is only used in specially compiled versions of code.
Which is true. :)
I was reading the other day about the PowerPC 601, 603(e) and 604(e). I
read that the 603 is in fact not that much of an improvement over the 601,
except it has a better cache system. Mind you the mask revisions will
obviously come in to play. As it turns out; a 604 is in fact a *lot* faster
than *603*, which is quite mind boggling. :) I read that the 603 doesn't
actually have a twin cache system (ie: just a cache; no instr or data) where
as the 604 does like the 68030/40/60. Quite strange. :) And the 'e', well
that just means its more energy efficient.
Am I correct in guessing that the 603e in Blizzard PPCs is the rev. 2 mask?
I have heard that rev. 3 masks go up to 350MHz.
I never really considered the 603 was 'slower'; but it is indeed a hell of
of lot faster, perhaps double even!!
Regards
Nick.
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