Mac Pro Late 2013 Repairability Score: 8 out of 10 (10 is easiest to repair)

For being so compact, the design is surprisingly modular and easy to disassemble. Non-proprietary Torx screws are used throughout, and several components can be replaced independently.

The easily-opened case is designed to make RAM upgrades a snap.

The fan is easy to access and replace.

While it will require a bit of digging, the CPU is user-replaceable—meaning intrepid fixers should be able to save considerably by upgrading from the base-level processor configuration.

There is no room, or available port, for adding your own internal storage. Apple has addressed this with heaps of Thunderbolt, but we'd personally rather use the more widely compatible SATA if we could.

With some proprietary new connectors and tight cable routing, working on this $3,000 device without a repair manual could be risky.