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On Fri, 24 Mar 2000, Ron Peterson wrote: > I have an ASL 450MHz PIII (www.aslab.com) that actually runs three hours > on its three hour battery! Probably not if I was listening to CD's or > something though. I'm mostly just using emacs and gcc compiles > sometimes. Oh, and sometimes my programs actually work, and then I get > to run them also!!! I.E. - not really straining my CPU too much. It's > a PIII Celeron, I believe, which might help account for lower power > requirements. Less cache (256K), but at full CPU clock speed. Maybe > all mobile PIII's are Celerons? I used to know these things, but I've > kinda stopped keeping track. I've gushed about ASL before, so I'll tone > it down this time... I think all the mobile PIII chips have the cache on-chip (256K full-speed), just like the new Coppermine desktop chips, but unlike the original desktop PIIIs (512K off-chip). Celerons only have 128K cache (but it's still full-speed), and don't have the SIMD instructions. Conventional wisdom is that the 128K Celeron cache is about equal to the original PIII cache in performance, and the 256K Coppermine-style cache is superior. For those of you with money to burn, the new SpeedStep PIII chips sound interesting. 650MHz when you're on wall power, and still 500MHz (and low power) unplugged. Final observation: the name of Coppermine might lead you to believe that it uses the new copper interconnect wiring on the chip that Intel is working on. But it doesn't; they don't yet have a commercial product using that technology. AMD and Intel are both working on it, though. So far as I know, IBM is the only chip foundry actually shipping copper products - and only for internal use, at that. Sad fact for Mac fans: IBM has faster PowerPC chips ready (650MHz G4 and 800MHz G3!), but Motorola won't let them sell them to anyone, because Motorola hasn't figured out how to manufacture faster chips, and doesn't want IBM embarassing them. -- Mark J. Dulcey mark at buttery.org Visit my house's home page: http://www.buttery.org/ Visit my home page: http://www.buttery.org/markpoly/ - Subcription/unsubscription/info requests: send e-mail with "subscribe", "unsubscribe", or "info" on the first line of the message body to discuss-request at blu.org (Subject line is ignored).
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