Very, very extremely bad FPU performance in 68k series chips. FP was always the one thing that Intel could mop the board with Motorola over. > Why isn't there a Seti@home client for 68k Macs? > Sure, it'd be slow but slow is better than none.
The problem is, even a Q840AV would probably take longer than 6 months to complete a complicated WU. *Don't flame me, that's just an educated guess* Not trying to insult anyone, but just think for a moment how long it takes to complete a WU on a 1GHz machine that has well over 4x the FPU performance per megahert (Advances in pipelining and cacheing), gobs more bandwidth (100MHz bus or higher versus 40MHz at most, synchronous DRAM at or under 10ns versus EDO at around 60ns, cache at processor speed versus cache at bus speed *at best*), and a 25x CPU MHz speed advantage. What I'm saying is that a modern 1GHz computer has somewhere in the range of a 50x advantage over the fastest Mac. Factor in that SETI WUs have to be compared in whole, which means moving parts in and out of cache to be compared, over the much slower Mac bus... SETI would have to invest in serious storage just to keep track of all the SETI units that are out to old Macs! Terry > I just wish I > could be Seti productive, even if it would take 6 months to do a unit. -- Vintage Macs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> Vintage Macs list info: <http://lowendmac.com/lists/vintagemacs.shtml> The FAQ: <http://macfaq.org/> 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/vintage.macs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
