Mac Pro (M2 Ultra, 2023)

Tower Mac Pro — unified memory fixed; PCIe expansion for Apple I/O cards, not gaming GPUs.

Chip	M2 Ultra
RAM	64–192 GB unified — fixed at purchase
Storage	Not user-accessible — Apple service
PCIe	Apple I/O expansion — not standard desktop GPU slot

Upgrade guides by component

Memory (unified / soldered) Storage options GPU limits CPU / chip tier

More Apple models

MacBook Pro 14-inch (M3, 2023) MacBook Air 13-inch (M3, 2024) MacBook Air 15-inch (M3, 2024) MacBook Pro 16-inch (M3 Pro / Max) Mac mini (M2 / M2 Pro, 2023) MacBook Pro 14-inch (M4, 2024) iMac 24-inch (M3, 2023) Mac Studio (M2 Max / M2 Ultra) MacBook Pro 16-inch (2019 Intel)