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- Path: sparky!uunet!munnari.oz.au!metro!usage!sserve!manuel.anu.edu.au!huxley!tal691
- From: tal691@huxley.anu.edu.au (Tonio Loewald)
- Newsgroups: comp.sys.mac.hardware
- Subject: Re: 25 MHz Mac IIsi - Another Success
- Date: 11 Nov 92 02:24:06 GMT
- Organization: Australian National University
- Lines: 31
- Message-ID: <tal691.721448646@huxley>
- References: <baron.24@insane.sanders.lockheed.com>
- NNTP-Posting-Host: 150.203.2.12
- Keywords: 25MHz, MACIIsi
-
- baron@insane.sanders.lockheed.com (Robert P. Baron) writes:
-
- >I finally got my crystal oscillator from Fry's and replaced the 40 MHz one
- >with the 50 MHz one last night. My si is working fine and much faster than
- >before. I really noticed improvement when playing Quicktime movies, they
- >play back a lot smoother than before. I was concerned about doing this
- >upgrade since I bought my si when they first came out (2/40 configuration),
- >but the upgrade went well. I did put a heat sink on the 68030, not because I
- >saw any problems but because its cheap enough and good design practice
- >as running the processor at a faster clock rate will expend more heat.
-
- Could someone re-post the details on this upgrade? (Or e-mail them to
- me?) It seems pretty simple - replace the 40MHz oscillator with a
- 50MHz oscillator (after saying the magic words "it's out of warranty
- anyway") and stick a heat sink to the back of the '030. What is
- Apple's comment on this? Do they claim that IIsi's aren't designed for
- it and may not be able to take the "pressure", etc?
-
- It your machine DOESN'T work afterwards, can you restore the old
- oscillator and expect it to work again? (Assuming that it fails
- because of some marginal problem and not because you stuck your
- soldering iron through one of the ASICs by accident.)
-
- Tonio
-
-
- --
- Tonio Loewald | Ph 06 290 1594 | 13 Sabine Cl. Garran
- tal691@huxley.anu.edu.au | Fax 06 290 1595 | ACT 2605 AUSTRALIA
- "You can lie/You can cry/For all the good it'll do you, you can
- die/But when it's done/And the police come/And they lay you down
-