Mac Studio 2025

The highest memory Mac Studio currently on the market: 512GB unified memory, the practical floor for serious local-LLM work (runs 400B-class models (4-bit) entirely in memory). Single-owner, adult-owned, ran as a stationary ML/dev machine in a smoke-free home office its entire life, never moved, dropped, or opened.

Configuration:
- Apple M3 Ultra, 32-core CPU / 80-core GPU / 32-core Neural Engine
- 512GB unified memory (discontinued config)
- 4TB SSD
- Two Thunderbolt 5 (front) + four Thunderbolt 5 (rear), two USB-A, HDMI, 10Gb Ethernet, SDXC, 3.5mm
- macOS Tahoe 26.5.1, fully updated
- Model: Mac15,14

Condition: Excellent. Fully functional in every respect, cosmetically clean. Additional photos of any angle on request.

Included: the Mac Studio and its power cord. NO ORIGINAL BOX.

Under AppleCare+ its entire life with zero accidental-damage claims. AppleCare+ is NOT A TRANSFERABLE BENEFIT.