home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!usc!cs.utexas.edu!sun-barr!olivea!pagesat!spssig.spss.com!uchinews!ellis!chh9
- From: chh9@ellis.uchicago.edu (Conrad Halling)
- Newsgroups: comp.sys.mac.hardware
- Subject: Re: PB 140 in 145's case?? Summary?
- Message-ID: <1993Jan23.211449.14185@midway.uchicago.edu>
- Date: 23 Jan 93 21:14:49 GMT
- References: <1993Jan21.191130.22118@wam.umd.edu>
- Sender: news@uchinews.uchicago.edu (News System)
- Reply-To: chh9@midway.uchicago.edu
- Organization: University of Chicago
- Lines: 39
-
- In article <1993Jan21.191130.22118@wam.umd.edu>
- gaia@wam.umd.edu (L. Anathea Brooks) writes:
-
- >A few days ago I posted a question about my wife's PB 145. I
- >had read that Apple had shipped some PB 145's which had 140 innards
- >in Macweek. I tested with Speedometer and thought she had got
- >one of these.
- >
- >To summarize, I was told that the PB 145 has the same ROMS as the 140,
- >and the only way to ascertain was to open the PB and look to
- >see if the 68030 says 25 mz or 16.
- >
- >I haven't done this, but one piece of email told me that the 145's
- >have 4 megs of RAM soldered to the motherboard. In that case, why did
- >Apple include 6 megs in hers, with a note attached which reads:
- >
- >"Due to a shortage of parts, we are shipping this PB with 6 megs of memory.
- >This satisfies the request for a 4 meg machine". (In fact! ;-).
-
- The PowerBook 145 has 2 MB soldered to the motherboard. The supplemental
- memory modules come in 2, 4, and 6 MB size. Usually, a 145 will come
- with a 2 MB memory module in it. To increase memory, you pull out the
- 2 and replace it with a 4 or 6 (isn't that wasteful?). So it's a good deal
- that the 145 came with 6 MB.
-
- A PowerBook 140 has a 16 MHz 68030; a 145 has a 25 MHz 68030. Neither has
- an FPU. In a Speedometer test, a 140 should run more slowly than a stock
- IIsi (which has a 20 MHz 68030 and no FPU), and a 145 faster.
-
- Connectix PowerBook Utilities ($49 mail-order) will tell you how fast
- the processor is running. For example, a PowerBook 160 can run at 25 MHz
- or 16 MHz (plus the equivalent of 1 MHz in processor idling mode). The
- 160 comes with a control panel that let's you switch processor speeds
- between 16 and 25 MHz. It seems like you should be able to do the same
- on a 145 (but not on a 140) -- maybe a 145 owner can find out.
-
- --
- Conrad Halling
- c-halling@uchicago.edu
-