> My results? Nothing exceeded 9.23 MB/sec. Not only that, but the 7,200 rpm > drive was faster than my 10,000 drive. The reason I ask this, is that I now > have a PCI slot open, and am thinking of adding a SCSI card for my 3 SCSI > drives. The tech manual that came with the computer quotes a SCSI bus burst > speed of 50 MB/sec. Is the Internal SCSI bus 10 MB/sec or 10 Mb/sec? > > It sure seems to me, based on my testing that the PCI bus at least is a huge > bottleneck, unless there is some other explaination for such low transfer > speeds to ram from SCSI, ATA & FW drives. I'd sure like to find a program, or > way to test this to find out for sure.
Here's what I'm getting from a Fujitsu 15K SCSI, a Quantum Atlas 10K SCSI and an external Maxtor Firewire (5400 rpm) using Hard Disk Speedtools: 15K Fujitsu SCSI: Read = 49.841 MB/sec Write = 35.532 MB/sec 10K Quantum SCSI: Read = 32.108 MB/sec Write = 31.907 MB/sec Maxtor Firewire : Read = 15.651 MB/sec Write = 13.023 MB/sec Don't have or use IDE...prices may be cheaper on IDE drives but as you can see nothing beats SCSI transfer rates! SCSI might not be cheap, but it has been very dependable in this old 8600. The SCSI drives by the way are hooked up to an Adaptec 29160N card using REALLY good cables and terminators. I work with sound files and need the speed...that and I'm a little obsessed. -- John England -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
