http://www.macnn.com/articles/04/05/25/600mhz.g4.zif.upgrade/
Daystar, XLR8 deliver 600MHz G4 ZIF upgrade w/cache
updated 12:40 pm EDT, Tue May 25, 2004
600MHz G4 ZIF upgrade
Daystar Technology has enhanced XLR8's upgrade technology to deliver new "value-priced", high-performance upgrades for Power Mac G3 owners: "the new upgrade utilizes the proven performance of the backside cache, to turbocharge its MAChSpeed G4 ZIF upgrade. The resulting upgrade delivers a 600 MHz upgrade that rivals the Power Macintosh G4 'QuickSilver' 733 system. Power Macintosh G3 speed improvements range for 2.5x in normal applications, to 8x in Mac OS X-optimized applications." The new with 250MHz of backside cache is available for $200. (It also works with Power Mac G4 PCI systems.)
