Path: utzoo!utgpu!news-server.csri.toronto.edu!qucdn!leek Newsgroups: comp.sys.amiga.hardware Subject: Re: Can I Speed Up a 25Mhz 030 Board? Organization: Queen's University at Kingston Date: Friday, 7 Sep 1990 23:14:05 EDT From: Message-ID: <90250.231405LEEK@QUCDN.BITNET> References: <4278@crash.cts.com> In article <4278@crash.cts.com>, danb20@pro-graphics.cts.com (Dan Bachmann) says: > >In-Reply-To: message from schur@isi.edu > > In the September 1990 of Amazing Amiga Computing magazine it >explains that you can increase your 25MHz Commodore 68030 board by replacing >the 4 pin 25Mhz Crystal with a 28-29MHz crystal no problem and there should be >a noticeable speed difference of about 10%, so you'll be running a 28MHz 68030 ---------------------------------------- Unless you are doing heavy duty CPU bound stuff all in FAST ram or cache, you won't get all the 10%. The 10 % is the upper limit. If the CPU have to do any chip ram access, it'll have to slow down... In general, it is hard to notice any speed increase of 10%. The max speed you'll every get is 10% or so. Whether or note you can actually feel it is another question. I personally won't notice it. You pay for that additional 10% of performance by risking reliability (timing, noise, heat etc) >rather than a 25MHz 68030. Gee, I'm still running a stock 68000. I am running a 18.4MHz 020 Lucas/Frances. I don't notice the speed gain (40% without 32-bit ram) at all. (with 32-bit ram, it runs at 4.6X speed <- that ) I can tell) K. C. Lee Elec. Eng. Grad. Student