gpt-oss on NVIDIA GeForce RTX 5080 · 16GB VRAM

✅ Runs (tight) — gpt-oss 20B-A3.6B (MoE) @ MXFP4
gpt-oss 20B-A3.6B (MoE) at MXFP4 needs ~12.2 GB (weights 11.3 GB + KV 384 MB + overhead 577 MB @ 8K ctx) of your 14.4 GB usable VRAM — fits, but little headroom — close other apps or trim context. Expect ~85–140 tok/s (very fast).
context @ MXFP4: runs to its full 128K
quantneedsspeed
✓ MXFP412.2 GB~85–140 tok/s (very fast)
$runlocal install gpt-oss:20b
⚠ NVIDIA support is best-effort in v0.1 — verify before relying on it.
runlocal verdict card
download card share on x share on reddit drop it in your model-drop post
gpt-oss: Runs (tight)
for your own README — links back here

Same model, other machines: Apple M1 · Apple M1 Pro · Apple M2 · Apple M3 Pro · Apple M2 Pro · Apple M4 Pro

Also runs on a NVIDIA GeForce RTX 5080: DeepSeek-R1 (distill) · Qwen2.5 · Qwen3 · Gemma 4 · Gemma 3

Best models for a NVIDIA GeForce RTX 5080 · 16GB VRAM →

Architecturally similar

These share gpt-oss's KV-cache geometry — they size memory the same way, so here's how they fit on a NVIDIA GeForce RTX 5080 · 16GB VRAM too:

modelsharesverdict here
Llama 3.2 8kv/64hd ✅ Runs comfortably

Check any combo yourself: open the checker →