Sonnet Crescendo G3 L2 400MHz 1MB 0.4GHz 1MB L2 processor

Crescendo G3 L2 400 PMac 54 55 64 65 Perf 54 63 64 20th AM 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.