Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!brutus.cs.uiuc.edu!apple!oliveb!amiga!cbmvax!daveh From: daveh@cbmvax.UUCP (Dave Haynie) Newsgroups: comp.sys.amiga Subject: Disk Speeds Indeed Message-ID: <7701@cbmvax.UUCP> Date: 19 Aug 89 03:11:34 GMT Organization: Commodore Technology, West Chester, PA Lines: 18 Some nice folks borrowed an A2630 and compared it to their A2620 in the same system. The disk controller is a 2090A. DiskPerf sez: A2620, 4 Megs: 1024K Reads 509875 Writes 371800 b/sec A2630, 4 Megs: 1024K Reads 853333 Writes 503606 b/sec I did tweak DMA a bit on the A2630 design, but I'm still impressed. The drive used was a Fujitsu SCSI drive I'm not familiar with, and the 2090A ROM wasn't translated into 32 bit RAM, so it might still go a tad faster. -- Dave Haynie Commodore-Amiga (Systems Engineering) "The Crew That Never Rests" {uunet|pyramid|rutgers}!cbmvax!daveh PLINK: hazy BIX: hazy We have no choice. We are, after all, professionals.