>Date: Wed, 12 Feb 2003 00:18:10 -0500 >From: "Wallace Adrian D'Alessio" <[EMAIL PROTECTED]>
>> Did you do the research to *know* whether it would work? > >I took the sellers word on it. And the seller is correct. The clone CPU cards work fine in Macintoshes, including the Power Computing cards, with a few exceptions, but they are all electrically compatible going from clone to Apple. There are some problems moving Apple cards into the Catalyst based PCC clones. The main issue moving a Power Computing CPU into an Apple has to do with bus speed. Anyway, back to the topic at hand... That "jumper block" on top is not a jumper block. It is a cable connector for Umax's proprietary dual processor configuration in the S900. It was used to cable the two processor cards together. In single processor mode, with the card's components (heat sink) facing you, and the edge connector toward you or down, the left three pairs of pins should be jumpered. I've seen one of these (200 MHz 604e Umax) fail for no apparent reason. Could be they're a little extra static sensitive. It's hardly a statistically significant sampling though. The Umax cards for the S900 and J700 are all built to Apple's specs and work fine in the Apple machines with a CPU slot. The 233 MHz card has a fan mounted on teh heat sink which presents some fit issues in a few machines, and the cable connector at the top of the card can cause a fit problem wtih the lid (CPU card stabilizer) of some models. Small Dog had a nice sale a couple (three?) of years ago on the 233 MHz 604e cards for $19 each I think, back when a 604e card was still worth something. I picked up ten of them, removed the cable connector, mounted flush jumpers on the three pairs that needed them and sold them on Ebay for a nice profit. They all worked great, mainly in 7500s and 8500s, if my memory serves regarding my customers. One thing that could be causing your problem is if your particular 7600 will not tolerate a 50 MHz bus speed. The 7600 should run fine at 50 MHz. But it's a possibility. You might try pulling your L2 cache, if you have one installed. Sometimes a slow cache will hold bus speed back. The 200 MHz card runs the motherboard with a 50 MHz bus speed. What CPU card were you using before? I saw a bizarre problem once where a 150 MHz PPC604 card would work fine in a machine but nothing later would. Very strange. Turned out the 3.3V cable from the power supply had come loose. The older PPC604 apparently didn't use the 3.3V supply, but the newer cards (PPC604e and later) needed it. Jeff Walther -- 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
