"mark" <[EMAIL PROTECTED]> writes: > >Is there much of a difference in speed between using a 50pin scsi drive >(or indeed a with an adapter 68/80pin drives) vs IDE drives on the >internal bus of a Pre G3 - PCI Power Mac.
In a word, yes. The internal SCSI bus of Pre-G3 PCI PowerMac is limited to 10 MB/s. That's pretty slow by today's standards (IDE or SCSI). To use an IDE drive you'll need an IDE controller card and even a first generation IDE controller card that just supports ATA33 will give you up to 33 MB/s or over 3 times the theoretical bandwidth. Current IDE controllers are much faster. > Or is it mainly a cost per >megabyte issue in that the larger IDE drives are a lot cheaper. That too. :) > At what >point (which version of SCSI) does SCSI become faster than IDE say >ATA66/100 with a 7200 drive? High-end SCSI (Ultra160 or Ultra320) will be a bit faster than High-end IDE (ATA133). You probably won't see or need the difference unless you're running some sort of raid disk array. Both high-end SCSI and IDE controller cards will go a lot faster than any single disk. Current model disk drives can sustain data transfers at 30-40 MB/s, so whether you go IDE or SCSI you should at least get a controller card that can handle that much throughput. Hope this helps, -Jeff [EMAIL PROTECTED] -- "You can't brew a premium lager with a kool-aid mentality." --Harold Green in _The_Red_Green_Show_ -- 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
