Re: How fast is a IIgs?

[CHEEZWHIZ@news.delphi.com (CHEEZWHIZ@DELPHI.COM)]

barter@sun.lclark.edu (Alfred Barter) writes:

>What is the clock speed of an Apple IIGs?
>I opened the sucker up and saw a crystal rated at about 3.6 MHz.
>If I ripped that puppy out and put in say, oh...a 6.54 MHz crystal
>would that speed up my IIgs?

As you noted, the clock speed is 3.6 MHz.  Unfortunately, the IIgs has to 
deal with a bank of very frequently used memory which is only rated at 
1MHz (the IIe emulation memopry, but the GS uses it in native mode, too), 
so it's constantly dialing down to 1MHz to access that memory.  All in 
all, it actually averages about 2.8MHz, which is what you'll hear most 
people say about how fast the GS is.   Also, unfortunately, the processor 
on the motherboard is only rated at 4MHz, so you're going to be pushing 
your luck trying to run it much faster.  Your best bet at this point is 
the get a ZipGSX card, and have it upgraded with the new 14MHz chips.  
The ZipGSX replaces the processor, as well as adding a RAM cache to speed 
it up even more.  There is also the TransWarp GS accellerator, but I 
haven't heard if anyone's been successful getting that one to run at 
14MHz yet.  Maybe someone else here in csa2 knows...

CheezWhiz