Can the RTX 3080 Laptop run gpt-oss 20B?
Yes, with 16 GB or more. gpt-oss 20B needs about 16 GB and the RTX 3080 Laptop has 16 GB of VRAM. Expect about 78 tok/s, faster than you can read. The 8 GB version doesn't have room.
ollama run gpt-oss:20bFirst time? Install Ollama, then paste that into a terminal.
gpt-oss 20B needsAbout 16 GB
RTX 3080 Laptop has8 or 16 GB VRAM
Bandwidth448 GB/s
Estimated speed~78 tok/s
By memory size
Each RTX 3080 Laptop version
- 8 GBToo big
- 16 GBRuns great ~78 tok/s
Want it faster?
Speed comes from memory bandwidth: the card reads all 2 GB of active weights for every token. Cards that run gpt-oss 20B faster:
How we estimate
Speed is roughly memory bandwidth divided by the weights read per token, calibrated on our own rack. Sizes are Ollama's default 4-bit downloads plus about 1.2 GB for context. Real results are usually within about a third. Measured it yourself? Send us the number.
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