The tech answer is quite nice and theoretically correct. The problem found on some PCI Macs (some 8500, 8600, and 7500/7600 MoBos.) is that the support circuits on the MoBo's bus can't always support the full 50 mhz CPU bus speed. These Macs (and it's luck of the draw as to what speed each particular MoBo can support) will only run smoothly at slower bus speeds.
As an example, I upgraded 2 - 8600/200s to G3 for a friend. (PowerLogix G3/400/1 meg) I had to use the 10x @ 40 mhz settings on one, as it would consistently lock up at the 8x @ 50 mhz settings. The other (and a third with an XLR8 ZIF Carrier and G3/400/512K) run perfectly at 8x @50 mhz. (The XLR8 runs great overclocked at 9x @ 50mhz, while the Powerlogix starts running considerably hotter at the overclocked 450 mhz speed.) I have had the same problem with 2 of the 6 - 7600s in my network. There are documented cases with the 8500 MoBos having this same problem. (The old 8500 list has lots of documentation.) David Allen -- 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
