Apple M5 Ultra Mac Studio for Local AI in 2026: 1.2 TB/s, a 256GB Ceiling Until October, and Whether to Pre-Order

• The Studio wins everything else: ~200W vs 1,400W+ under load, silence, no PCIe lane Tetris, no mining-history roulette, a warranty, and one power cable. At $0.12/kWh, the rig’s extra ~1.2kW is roughly $0.14/hour — about $500/year at 10 hours/day — and it heats the room it lives in.

• Capacity is no longer close. The 96GB rig ceiling is fixed; the Studio line goes to 256GB today and 512GB in October. The 200GB-quant era we’ve entered this August is simply not addressable with consumer NVIDIA cards at any sane price — the 96GB RTX PRO 6000 costs more than the 256GB Studio.