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- Newsgroups: comp.sys.apple2
- Path: sparky!uunet!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!destroyer!news.iastate.edu!news
- From: hal@budapest.math.macalstr.edu (Harold Byron Bouma)
- Subject: Re: Accelerator performance
- Message-ID: <1992Sep12.230154.15547@news.iastate.edu>
- Sender: news@news.iastate.edu (USENET News System)
- Organization: Iowa State University, Ames IA
- References: <9209121442.AA27789@apple.com>
- Date: Sat, 12 Sep 1992 23:01:54 GMT
- Lines: 32
-
- "ERIC S FORD" writes
- > I recently spoke with Quality Computers re: ZipGS performance and cost.
- > They now only carry the 8MHz board. Their reason is that the 9MHz board
- > still uses the 8MHz processor but incorporates a new crystal to allow
- > pushing that processor to 9MHz -- they expect a resultant decrease in
- > reliability. Anyone out there care to comment? I'm on the verge of
- > plunking down the bucks for an accelerator and would appreciate any and all
- > advice/reviews of performance, reliability, and limitations.
- >
- > Eric S. Ford
- >
-
- Well, up until the 14Mhz 65816 came out, all Zips above the speed of
- 8 Mhz were 8 Mhz chips pushed to go faster. Todd Whitesel (sic) had written
- to Zip a while ago upset that his 10 Mhz chip had become damaged from the
- high speeds, and Zip wrote back saying that out of the 10,000+ 10 Mhz zips
- sold, none had become damaged from being ran at 10 Mhz. And later the real
- reason why Todd's processor becoming damaged had been discovered, which was
- unrelated to running at 10 Mhz.
-
- Now, before the 14 Mhz chip, Zip would buy large quantities of 8 Mhz
- chips and then run them at higher speeds to see if they could run at that
- speed. WDC sells chips rated at 8 Mhz, but many are capable of running faster.
- But there isn't anything wrong with running a chip faster than its rating, or
- at least nothing proven yet.
-
- --
- | Hal Bouma | Send mail to: HBouma@Macalstr.edu |
- | Macalester College, St. Paul, MN. | and HBouma@Macalstr.Bitnet |
- \ Things that make you go Hmmm: System 6, GNO, DreamGrafix, SoundMeister /
- \ Coming sometime this decade for the //GS : NBA! (GNO compatible too!) /
- \ Drop by and say hi to us anytime on the #AppleIIGS channel on IRC!! /
-