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Can a RX 7800 XT 16GB run Qwen3.8 27B?

Yes, with partial offload (slower). Qwen3.8 27B on RX 7800 XT 16GB at Default uses system RAM (20.3 GB needed, 15.5 GB usable), about 7 tok/s (estimate).

Hardware: RX 7800 XT 16GB · Model: Qwen3.8 27B

RX 7800 XT 16GB has 16 GB of VRAM and 624 GB/s of memory bandwidth. The checker holds back 0.5 GB of VRAM for the driver and assumes 16 GB of system RAM, so fast memory usable by Ollama is 15.5 GB. Partial offload may also use 60% of that system RAM. Qwen3.8 27B (27B, Alibaba) at Default is a 18 GB download and needs 20.3 GB with headroom for about 8k tokens.

Best quantDefault
Download size18 GB
Memory needed20.3 GB
Usable fast memory15.5 GB
Fitpartial offload (slower)
Estimated speed~7 tok/s (estimate)
Commandollama run qwen3.8:27b
Open RX 7800 XT 16GB in the checker

Estimates, not benchmarks. Model sizes are ollama.com download sizes; memory needed adds headroom for ~8k tokens of context; speeds are rough figures from memory bandwidth. Data updated 2026-10-23.

A project by OnDevice Labs · llms.txt