Can I Run GPT-oss 120B on Apple M5 Pro?
Written by Jakub Rusinowski · Last updated July 10, 2026
No — the GPT-oss 120B family does not fit in the Apple M5 Pro's 64 GB VRAM.
Affiliate disclosure: Some links on this page are affiliate links — if you buy through them, LLM Configurator may earn a commission at no extra cost to you. As an Amazon Associate, LLM Configurator earns from qualifying purchases.
Apple M5 Pro Specs
| VRAM | 64 GB unified memory |
| Memory Bandwidth | 307 GB/s |
Why It Does Not Fit
Every GPT-oss 120B variant requires more VRAM than the Apple M5 Pro provides (64 GB).
Nearest GPU That Fits
NVIDIA A100 80GB (80 GB VRAM).
NVIDIA A100 80GB PCIe
Launch MSRP: $15,000
2026 prices are volatile — check the current listing.
FAQ
Can I run GPT-oss 120B on the Apple M5 Pro?
No — the GPT-oss 120B family does not fit in the Apple M5 Pro's 64 GB VRAM.
What GPU should I get instead to run GPT-oss 120B?
The NVIDIA A100 80GB (80 GB VRAM) is the cheapest upgrade that fits it.
GPT-oss 120B on Other GPUs
Popular Models on the Apple M5 Pro
VRAM Tier
Troubleshooting
Buying Guide
← Can I Run It? | GPT-oss 120B Model Page | Apple M5 Pro GPU Page | Check Your Hardware