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- Path: sparky!uunet!ogicse!uwm.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!mojo.eng.umd.edu!pandora.pix.com!stripes
- From: stripes@pix.com (Josh Osborne)
- Newsgroups: comp.arch
- Subject: Re: IBM Clock-tripled 486
- Message-ID: <BxxAEC.GGB@pix.com>
- Date: 18 Nov 92 17:39:46 GMT
- Article-I.D.: pix.BxxAEC.GGB
- References: <1e937lINNq50@gap.caltech.edu> <Bxw6tK.KMM@pix.com> <Bxx6MK.B47@inews.Intel.COM>
- Sender: news@pix.com (The News Subsystem)
- Organization: Pix Technologies -- The company with no adult supervision
- Lines: 24
- Nntp-Posting-Host: pandora.pix.com
-
- In article <Bxx6MK.B47@inews.Intel.COM> rskinner@mipos2.intel.com (Rod Skinner) writes:
- [...]
- >IBM has a license from Intel to produce derivatives from the 80386 not
- >the 80486. The IBM 486 SLC2 was introducted in June. It is a clock
-
- Ahhh, the "486" is for marketing not to tell us the #cycles each instruction
- takes, or what op codes are supported. *sigh*
-
- >doubled version of the IBM 386 SLC part. It has a 16k on-chip cache
- >and no on-chip math coprocessor but supports the standard Intel387 math
- >coprocessor chip. IBM introduced the "tripler" part at Comdex and will
- >operate at 33 MHz externally and 100 MHz internally.
-
- However the 386 takes more cycles to eexecute most instructions, so it
- is less memory bandwith limited then 486es. That means a *3 internal clock
- is worth more for the integer ops on a 386 then a 486 (but can't help FP
- because it is done off chip)..
- [...]
- --
- stripes@pix.com "Security for Unix is like
- Josh_Osborne@Real_World,The Multitasking for MS-DOS"
- "The dyslexic porgramer" - Kevin Lockwood
- We all agree on the necessity of compromise. We just can't agree on
- when it's necessary to compromise. - Larry Wall
-