Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!ucbvax!ucsd!nosc!baron!ryptyde!dant From: dant@ryptyde.UUCP (Daniel Tracy) Newsgroups: comp.sys.amiga.advocacy Subject: Re: The Amiga's Future Message-ID: <55@ryptyde.UUCP> Date: 14 Jun 91 06:45:38 GMT References: <5068@orbit.cts.com> <16647@darkstar.ucsc.edu> <1308@cbmger.UUCP> <28@ryptyde.UUCP> <48@ryptyde.UUCP> <22370@cbmvax.commodore.com> <22414@cbmvax.commodore.com> Reply-To: dant@ryptyde.UUCP (Daniel Tracy) Organization: Ryptyde Timesharing Lines: 17 Responding to the following: "Could be. In fact, that sounds like a marketing trick. I guess our marketroids missed the boat on the A3000. While the 68030 is of course clocked at 25MHz, it does derive its timing from a 50MHz clock module. On the other hand, maybe Motorola missed out on it. More and more new CPUs are running bus clocks at 1/2 their ALU clock speed. And they're using the ALU clock speed to stamp the part. If you're targeting people who buy systems according to clock speed, you win that way." What's the deal here? I heard that, in the 680x0 line, the chip only runs at half its clock speed "internally". With a 50MHz 68030, for example, the chip would only be running at 25MHz. But I also heard that this was fixed in the 68040. I also read that, at 25MHz, the 040's ALU is running at 50MHz. Is this related, or what? Anyone care to explain (if there IS anything to explain)?