On 2003-02-17 18:44, "Tom & Lisa P" <[EMAIL PROTECTED]> wrote:
>> I used to work at a place where we used QFP 68040's in production, and I can >> assure you we didn't pay $216 a piece for them! And I didn't pay anything for >> mine... It was pretty much old stock they were getting rid of. I did get to >> use their nifty hot-air SMD soldering equipment, although the job could just >> as well be done with a very fine-tipped soldering iron. > > I dont suppose you have a stash of these left over ? : ) I don't suppose so, either, and I haven't been 'round there in ages. They hardly used them back then anymore, even. >> Overclocking is done by replacing the oscillator crystal on the daughter card >> with a 20-22.5 MHz part. 22.5 MHz results in the maximum speed of 90/45 MHz, >> but you might want to go a little lower if you get freezes and crashes. >> >> Basic info is here: <http://homepage.mac.com/schrier/mhz.html> > > Thats what I do. The replacemenr oscillators can be had from digikey.com for > a few $. Yup. Or any other well-stocked electronics outlet. To any aspiring PB500-upclockers: get more than one, you could be lucky and have yours work right away at 90/45 MHz, but chances are you'll need to step down to get a stable system. You don't want to be ordering parts every time you find it you have to go lower still to make it work right. Just get the entire range from 20-22.5 and ask for a discount, or ask if you can return any unused parts for a refund. Or make earrings out of them. >> I seem to recall Sonnet at one time selling 80/40 MHz 68040 upgrades for the >> 500 series... Can anyone confirm this, or was I dreaming at the time? I > > DOesnt ring a bell. They did sell the quad doubler which was a 50 MHz clocked > part for desktop machines. I wonder if that is a CQFP part ? Nope: <http://www.everymac.com/upgrade_cards/sonnettech/quad_doubler/quad_doubler_ 50.html> ,xtG .tsooJ -- Nomen dominii habeo, ergo sum. -- Joost van de Griek <http://www.jvdg.net/> -- PowerBooks 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> PowerBooks list info: <http://lowendmac.com/lists/powerbooks.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/powerbooks%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
