August 2006 - January 2008
Original OS 10.4.7
Processor: Intel Xeon Woodcrest
CPU: 2 x 2.0 with 2 cores per processor
2 x 2.66 with 2 cores per processor
2 x 3.0 GHz with 2 cores per processor
RAM slots 8
Maximum RAM 32 GB
Type: 240 pin PC2-5300 DDR2 (667 MHz)
MacPro1,1 will boot only into a 32 bit kernel.