- 2006-08
- 2.66 GHz 2×2-Core Xeon
- 4 GB 667 MHz DDR2 ECC
- ATI Radeon X1900 XT 512 MB
- 500 GB Serial ATA 3 Gb/s drive
- 16x SuperDrive DL
- Airport Extreme & BT 2.0+EDR
- 2013-12
- 3.5 GHz 6-Core Xeon
- 32 GB 1866 MHz DDR3 ECC
- 2x AMD FirePro D700 6 GB GDDR5
- 512 GB PCIe-based SSD
- 2019-12
- 3.3 GHz 12-Core Xeon
- 96 GB 2933 MHz DDR4 ECC
- Radeon Pro 580X 8 GB GDDR5
- 1 TB SSD
Cores went up, (base-)speed went down slightly (although the average turbo-boosted speed should be higher). Memory per thread went up from 1 GB to 4 GB (hello huge C++ templates). The graphics card will be replaced by the AMD Radeon Pro W5700X once available.