The Power Macintosh 8100, Workgroup Server 9150, Quadra 840av and the 7100/80 (Not the 7100/66!!!) featured the most advanced NuBus bridge chips. The "Bart" 9950 allowed "NuBus 90" block transfers of 45 MBytes/ sec in these machines. Very fiew NuBus cards were actually made that could perform these types of block transfers though. I know the Atto Silicon Express IV, Radius Thunder IV series, and I'm sure a fiew others actually support the NuBus 90 transfer rates.
With a Maxtor Atlas 15k II in my 8100/110 (upgraded to a G3/240) I can get 17 MBytes/ sec with Silicon Express IV according to Atto's Performance Utility. This limitation can be attributed to the Wide SCSI limitation of 20 MBytes/ sec. I've tried the setup with dual Atto Silicon Express cards but the machine becomes very unstable and randomly crashes with the two cards in a RAID-0 setup; the machine is stable without the G3 upgrade so I assume it's something to do with NuBus timing issues and having so much data going through the machine or the AppleRAID drivers...who knows. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to vintage-macs@googlegroups.com To unsubscribe from this group, send email to vintage-macs-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/vintage-macs?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
