Mac Studio 2025

Mac Studio (2025), M3 Ultra, 32-core CPU, 80-core GPU, 512GB unified memory, 1TB SSD. Built to order (Z1CD00144LL/A), bought new from Expercom, April 2026.

If you're comparing against the 256GB versions, the difference is what fits in memory. A 400B model at 4-bit is around 245GB of weights, so it needs this config.

Condition is mint. It's a desktop that never moved, so no marks or scuffs. Original box and power cord included.

Apple's limited warranty runs to 26 April 2027 and transfers to you. No AppleCare.

It's ready to go. I signed out of my Apple ID, removed it from Find My, ran Erase All Content and Settings, and confirmed Activation Lock is Disabled. It's on the Hello screen now. Happy to send a screenshot.

I bought this for my business and it's more machine than I need. I ran a local RAG setup on it, embeddings plus a 32B model, so it never hit its ceiling. No thermal or stability problems.

First time selling on Swappa. Ask me anything. Ships fully insured.