Will it run? / gpt-oss 20B / Ryzen AI Max+ 395 mini PC (128GB)

Can the Ryzen AI Max+ 395 mini PC (128GB) run gpt-oss 20B?

Fast Yes, at about 44 tokens/sec (estimated). Replies stream faster than you can read.

44estimated tokens/sec
15.5 GBmemory needed
96 GBavailable to the model
256 GB/smemory bandwidth
ollama run gpt-oss:20b

Check the Ryzen AI Max+ 395 mini PC (128GB) price →

How we got this number

Each generated token reads the active part of the model from memory once: 2.4 GB. The Ryzen AI Max+ 395 mini PC (128GB) moves 256 GB/s, so the ceiling is 107 tokens/sec. Real machines reach a fraction of that ceiling; we use 70%, an assumption until we get measured runs for this kind of machine. Send us your real numbers and we'll replace the estimate.

Faster machines for gpt-oss 20B

Mac Studio M5 Ultra (96GB)120+ tok/s$5,499Check price →
Mac Studio M5 Ultra (256GB)120+ tok/s$9,499Check price →
Mac Studio M5 Max (40-core GPU, 64GB)119 tok/s$3,799Check price →
Mac mini M5 Pro (24GB)60 tok/s$1,699Check price →

Other models on the Ryzen AI Max+ 395 mini PC (128GB)

lfm 2.5 8B (A1B)Fast120+ tok/s
Qwen2.5-VL 3BFast56 tok/s
Gemma 3 4BFast54 tok/s
Qwen 3-VL 4BFast54 tok/s
translateGemma 4BFast54 tok/s
Qwen3.5 4BFast53 tok/s