Refurbished Apple Mac Studio M2 Ultra (24-CPU 60-GPU)/64GB RAM/1TB SSD/A (Early 2023)

Apple Mac Studio M2 Ultra 2023 Slotted between the diminutive, inexpensive Mac mini and the massive, expandable Mac Pro, the Mac Studio represents Apple's first foray into a mid-sized desktop system since the demise of the underappreciated Power Mac G4 Cube more than two decades earlier.

This specific stock high-end model -- the Mac Studio "M2 Ultra" 24-Core CPU/60-Core GPU -- features a 3.6 GHz Apple M1 Ultra processor -- essentially two M2 Max processors interconnected with "UltraFusion" technology -- with 24 cores (16 performance cores and 4 efficiency cores), a 60-core GPU, a 32-core Neural Engine, a "Media Engine" that provides hardware acceleration for video encoding and decoding, 64 GB of onboard RAM, and a 1 TB SSD that Apple reports is "not user accessible" (but that actually is removable).

Connectivity includes two Thunderbolt 4 ports and an SDXC (UHS-II) card slot on the front and four Thunderbolt 4 ports, two USB-A ports, an HDMI port, a 10-Gigabit Ethernet port, and a 3.5 mm headphone jack on the back. It has 802.11ax (Wi-Fi 6), too.