> Would anyone happen to know if a 225 MHz ASPD 604e Processor Card from > an Apple clone, specificly a UMAX S900, work in a Powermac 7300? > Thanks, > Cautionary Craig W. > > and KOG replied: > This is a good question. I bought a Umax 250Mhz card on ebay and paid a > premium for it. I just tried it the other night and low and behold this > 250 Mhz card shows up as a 200 Mhz one. I contacted the vendor and they > are sending me another one. If that one doesn't go any faster than the > last one they gave me, I'll give up on non G3 or better upgrade cards. > KOG > ----------------- > > you should be aware that bus speed limits the maximum processor speed > you can acheive with trying for a G3 upgrade.
The card in question was a daughter card pull from some sort of UMAX contraption. It is suppose to be a "NON" G3 card and rated at 250 Mhz. It was intended for my 7300, which has a bus speed of 50 mhz, but is governed by the processor. Not the other way around. > only macs with bus speeds of 50 can get full use out of processor > upgrade chips clocked at multiples of 50. if your bus speed is 40, you > are not gonna be able to get the full maximum speed implied in the > chip's name. > > example: > my 6360 runs at a bus speed of 40Mhz. the best i can hope for out of a > G3 chip is 8 times the bus speed, or 8 x 40 = 320Mhz. > *snip* I think I know what you are referring to. I had a 6100/60 with a bus speed of 30 mhz and I bought a 300 mhz G3 Sonnet card. The best I could get in this 30 Mhz bus system with this card was 240 mhz. I would have like the opportunity to see the same card perform in a 6100/66 with a 33 mhz bus. In theory the 8x rule would have probably applied. KOG -- 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
