PowerPC 620
PowerPC 620 was a part of PowerPC 600 family of PowerPC processors jointly developed by engineers from IBM and Motorola as a part of the AIM alliance. It was the first 64-bit processor implementing the entire PowerPC Architecture. PowerPC 620 was used in Escala UNIX machines.
PowerPC 620 had 6.9 million transistors, and the die was 311 mm^2 in size. PowerPC 620 processors have 32/32 KiB L1 cache, 128 bit memory bus and up to 128 MiB large L2 caches.