Can the AMD Radeon RX 7900 XTX run gpt-oss 120B?
- FP16
- Q8_0
- Q6_K
- Q5_K_M
- Q4_K_M
- Q3_K_M
- Q2_K
No. Even at Q4_K_M, gpt-oss 120B needs about 72 GB, but the AMD Radeon RX 7900 XTX has 24 GB usable. You could offload some layers to system RAM, but it will be very slow.
Run it on a rented GPU
On a cloud GPU with enough memory, the same command you'd use locally works:
ollama run gpt-oss:120bAt Q4_K_M it needs about 72 GB, so pick a GPU with at least 80 GB.
Run it in the cloud
Too big for the AMD Radeon RX 7900 XTX? Run gpt-oss 120B on a rented GPU instead.
Rent a cloud GPU by the hour. No upfront cost, stop any time.
Memory needed by quantization
At 8,192 tokens of context. The black line marks the 24 GB the AMD Radeon RX 7900 XTX can use.
| Quant | Quality | Memory | Fits? | Speed | |
|---|---|---|---|---|---|
| FP16 | Full quality | 234.8 GB | Too big | — | |
| Q8_0 | Near-lossless | 125.3 GB | Too big | — | |
| Q6_K | Excellent | 97 GB | Too big | — | |
| Q5_K_M | Very good | 84.3 GB | Too big | — | |
| Q4_K_M | Good, most popular | 72 GB | Too big | — | |
| Q3_K_M | Noticeably degraded | 58.3 GB | Too big | — | |
| Q2_K | Heavily degraded | 45 GB | Too big | — |
GPUs that run gpt-oss 120B comfortably
Frequently asked questions
Can AMD Radeon RX 7900 XTX run gpt-oss 120B?
No. Even at Q4_K_M, gpt-oss 120B needs about 72 GB, but the AMD Radeon RX 7900 XTX has 24 GB usable. You could offload some layers to system RAM, but it will be very slow.
How much VRAM does gpt-oss 120B need?
About 72 GB at Q4_K_M with 8,192 tokens of context, and about 234.8 GB at full FP16 precision.
How fast is gpt-oss 120B on the AMD Radeon RX 7900 XTX?
It does not fit in the AMD Radeon RX 7900 XTX's memory, so most layers would run from system RAM and generation would be very slow.