---------- Original message ---------- Subject: Re: G3 B&WÂ IDEÂ bus speeds (and overall performance) Date: Thursday, 03. February 2011 From: peterh...@cruzio.com To: g3-5-list@googlegroups.com > "The B&W G3 doesn't support drives over 128 GB on its main drive bus, but > the UltraATA 66 bus used by the optical drives supports so-called Big > Drives - and it's twice as fast." > > The HD bus is Ultra/33 (33 MB/s). > > The Optical bus is DMA (16.67 MB/s).
Then the quoted article is wrong? > Both buses can support large drives using the "usual suspect" techniques. > > The LBA48 property patch is perhaps more appropriate for later (say, > Graphite) Macs, both of which buses are Ultra (although at different > maximum rates). > > The High Cap kext perhaps works best where the buses are different, which > is the B&W case. I always thought the LBA48 property hack only works with the KeyLargo IDE chip, not with the CMD646 chip nor with the second IDE bus (whatever that chips name is). Are you certain about the G3 B&W *Rev.1* to support large drives with the property patch or the High Cap driver? Anyway, about the bus speeds: I found the answer already: http://lowendmac.com/ppc/blue-white-power-mac-g3.html Quote: “A common suggestion in the old days was to put the hard drive on the 16.7 MBps ATA-3 bus used by the optical drive, but the Rev. 1 motherboard doesn't support booting from hard drives on that bus.” IMO that says it all. Thanks anyway. Andreas aka Mac User #330250 -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
