On Sat, 14 Mar 1998, Enki wrote:
> for give me if I'm wrong here but there is an "ALPHA" for the
> Mac it is a PowerPC processor that ran at 500Mhz and was muliprocessor
> compatible.
The fastest production PPC chip that has been shown is around 400MHz -
Steve Jobs was showing a prototype Mac using it. Its a newer G3 that has
the IBM copper technology in it. Good news is that its very fast, bad news
is that its only available from IBM - Motorola doesn't have the
technology. Since Apple generally sources its parts from Moto, having a
sourcing from IBM could create a rift in Apples relations with Moto.
> Now as of 6 months ago the newest vers. ran 1000Mhz
> but multiprocessor wasn't working at that speed. the form factor
> for these were built into the new G3 Macs but the actual processor
> at any speed isn't availible on the Mac platform but is used in some
> of IBM's AS/4000 servers. And if I read right the processor is a
> modified 620 and yes it is 64bit pure? and it is faster than a
> straight Alpha but it is hotter and a power hog (it uses a peltzer
> juntion and a 3watt fan and it sucks more power than your standard
> SCSI wide/fast hard drive.
> hope this help
The 1000+MHz chips aren't available yet - in fact, the thing that IBM
showed wasn't even a complete chip... its a research project... the
1000MHz parts won't be available from IBM, DEC (they also announced a
1000MHz Alpha), etc until after year 2000.... there are alot of very
complex issues with making a chip this fast. Don't plan on seeing one run
in a Mac, PC, etc for several years, at least.
Comparing future IBM parts to a present Alpha isn't a reasonable
comparison - the newer Alphas will be cooler as they will also be using a
smaller chip fab process, below .20u
-art
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