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- Path: su3.in.net!news
- From: mave@in.net (John J. Maver, Jr.)
- Newsgroups: comp.sys.amiga.misc
- Subject: Re: Speed: 68040 vs. 68060
- Date: 26 Feb 1996 11:31:24 GMT
- Organization: INTERNET Indiana
- Message-ID: <1740.6629T1326T42@in.net>
- References: <john.hendrikx.4h61@grafix.xs4all.nl>
- Reply-To: mave@in.net
- NNTP-Posting-Host: pm4-26.in.net
- X-Newsreader: THOR 2.22 (Amiga;TCP/IP)
-
-
- mave@in.net
- > In a message of 22 Feb 96 Lee Huggett wrote to All:
-
- > >> SysInfo is crap, that 40MIPS is really wrong. My 040/40 does that.
-
- LH>> I was mearly stating a fact Sysinfo does give 40 MIPS for an '060
-
- > That's because SysInfo's MIPS test isn't real world code, it doesn't make
- > use of the 060's ability to execute more than 1 instruction at the time.
- > Normal programs however (the ones not especially optimized for the 060)
- > still have a good chance to execute more than 1 instruction at the time (I
- > think that
- > 'normal' programs would do about 1.5 instruction/cycle on average on the
- > 060), so SysInfo is quite unrealistic.
-
- LH>> I know the '060 is faster the 040/40 (I would have bought one of those
- LH>> otherwise) but I think it is unlikely that you would get 81 MIPS out of
- LH>> it at a sustained rate
-
- > You can get even more out of it than that at a sustained rate (the maximum
- > possible is 100 MIPS at 50 MHz), it just depends on what kind of code your
- > running on it. To get optimal performance on 060 however you'll need
- > programs to be recompiled or optimized for it.
-
- > >> Most of the SAS/C compiled code does not have be specially 68060
- > >> optimized, in a real world situation the 060 is usually able to run 2
- > >> instructions at the same time.
-
- LH>> If code is optimised for an '060 is has more chance of running 2 or
- LH>> more instructions at once then unoptimised code.
-
- > The 060 can't run *more* than 2 instructions at once.
-
- > Grtz John
- > -- Via Xenolink 1.985B5, XenolinkUUCP 1.1
-
- I can't find SysInfo anymore...my old copy is gone. Anyone email me a
- copy, please?
-
-
-
- --John J. Maver, Jr.
- You will hear good news from one you thought unfriendly to you.
-
-