Over 10,000 sold, with less than 1% having any issues at all.Available in speeds from 400 - 600 MHz.Includes XLR8 MAChSpeed Control for exclusive G4 performance/compatibility.Available with the XPOSTFACTO utility for full OSX support on older systems.Installs in minutes - all tools and instructions included.Competitive products limit the Blue & White's bus speed to 66 MHz. Its exclusive design, allows the Blue & White system bus to run at full 100 MHz speeds. Its large 1 MB backside cache allows it to outperform a 700 MHz Power Macintosh G4 'Quicksilver' system. The MAChSpeed G4 ZIF is the only PowerMac G3 CPU upgrade that can provide 'Quicksilver' performance at prices under $200.