(in stock as this was posted).
See all the available used Mac Pros at OWC. Availablity varies over time. Some systems sold plaink and some enhanced with SSDs and more memory.
The 4-core 2.66 GHz and 8-core 2.93 GHz offer excellent value.
- The 4-core machines are solid workhorses.
- The 2.93 GHz 8-core is a very attractive option for anyone use software that makes use of multiple cores. This is the model I would choose for a multi-year workhorse.
- The 2.26 GHz 8-core is a solid platform for video and sound processing (for Photoshop and Lightroom and similar, stick to the faster clock speeds).
Mac Pros are workhorses generally good for years of solid use.