Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!ucbvax!GRIN1.BITNET!THROOP From: THROOP@GRIN1.BITNET ("Throop,Henry B") Newsgroups: comp.sys.apple2 Subject: Re: speed loss Message-ID: <9104181535.AA28525@apple.com> Date: 18 Apr 91 14:56:03 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 16 [toddpw writes about RAM refreshing] Do other computers (Mac, IBM, for example) also suspend the CPU occasionally to refresh the DRAMs, or do they have a seperate coprocessor or something like that to do it? While the issue of the 'actual' speed of the gs has come up many times, I've not heard people arguing about whether the original PC was 4.77, or something slightly less. Does this have anything to do with why IBM systems use 9 RAM chips (for parity checking?) where 8 do in the gs? Henry -- Henry Throop THROOP@GRIN1.BITNET throoph@jacobs.cs.orst.edu