Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!chaph.usc.edu!aludra.usc.edu!hhwong From: hhwong@aludra.usc.edu (Henry Hwong) Newsgroups: comp.sys.mac.misc Subject: Re: 68040 for the Mac? Summary: Well... Message-ID: <14274@chaph.usc.edu> Date: 20 Jan 91 21:23:20 GMT References: <6860@crash.cts.com> <1991Jan20.185644.1245@cs.uiuc.edu> Sender: news@chaph.usc.edu Organization: University of Southern California, Los Angeles, CA Lines: 24 Nntp-Posting-Host: aludra.usc.edu In article <1991Jan20.185644.1245@cs.uiuc.edu> gillies@cs.uiuc.edu (Don Gillies) writes: > >While people may be drooling over a 25Mhz 68040 chip, remember that >the Mac II series has a 10Mhz Nubus anchor around its neck. This >means that your Mac IIxx (whatever) cannot be accelerated without >spending gobs of money on a monster cache, and nomatter what, your >screen updates will always display like molasses (unless you buy a >video accelerator too). Many of these 040 accelerators go through either a processor direct slot or the IIci cache connector, so the NuBus bottleneck is not a problem here. I don't think Apple places the memory on as a NuBus either (unlike IBM, who puts their memory circuitry on the peripheral bus), so when Apple does design a 040 machine, Nubus doesn't matter here either. >That is one good reason why Emany people have opted to quit the >macintosh and buy NeXT machines (with 20Mhz Nubus). Wow! Are there a lot of people who really trash their Mac because of the NuBus speed? Really. I don't even have any cards! I think there is more to a Mac than NuBus. -Henry (hhwong@usc.edu)