Here are the processor specs from wikipedia - see RM-74:
Lion (65 nm SOI)
Dual AMD64 core
B1 Stepping
L1 cache: 64 + 64 KiB (data + instructions) per core
L2 cache: 512 KiB per core, fullspeed, or
L2 cache: 1 MiB per core, fullspeed
Memory controller: dual channel DDR2-800 MHz
MMX, Extended 3DNow!, SSE, SSE2, SSE3, AMD64, PowerNow!, NX bit, AMD-V
Socket S1
HyperTransport (1800 MHz, 3600 MT/s, 12.8 GB/s CPU-RAM + 14.4 GB/s CPU-I/O transfer rate)
HyperTransport (2200 MHz, 4400 MT/s on ZM-85 only)
Power consumption (TDP): 32, 35 watt max
First release: June 4, 2008
Clock rate: 2000, 2100, 2200 MHz (RM-7x, L2 cache: 1 MiB)
Clock rate: 2100, 2200, 2300, 2400 MHz (ZM-8x, L2 cache: 2 MiB)
31W TDP:
RM-70: 2000 MHz
32W TDP:
ZM-80: 2100 MHz
35W TDP:
RM-72: 2100 MHz
RM-74: 2200 MHz
ZM-82: 2200 MHz
ZM-84: 2300 MHz
ZM-85: 2300 MHz
ZM-86: 2400 MHz