G3 Performance Sonnet brings the G3 revolution to previously "upgrade-challenged" Power Macintosh and Performa computers that were built with no processor upgrade slot. Through innovative engineering, Sonnet has designed the Crescendo/L2 G3 to be a "plug-and-play" processor upgrade card that installs into the L2 backside cache slot of the computer. The Crescendo/L2 G3 incorporates the revolutionary PowerPC G3 processor and ultra high-speed Level 2 backside cache. Depending on your computer's bus speed, the processor will automatically configure between 400-500 MHz with 1MB 200-250 MHz backside cache. Simple Installation The Crescendo/L2 G3 installs in minutes with step-by-step, illustrated instructions. Simply install the Crescendo software, open your computer, then insert the upgrade into the Level 2 cache slot. Compatible Macintosh Models Power Macintosh 4400, 5400, 55002, 6400, 65002, 7220 Performa 54xx, 6360, 64xx Twentieth Anniversary Macintosh (TAM)2 StarMax 3000, 5000 UMAX C500, C600, C600X3 Note: The Apple Geoport Express Modem is not compatible with a G3 processor. 2Due to bus speed limitations, this upgrade card runs at top speed only in the Power Macintosh 5500, 6500, and Twentieth Anniversary Macintosh (TAM). 3The Cache Doubler must be removed from the C600X.
