How fast will Ornith 1.5 9B feel on the AMD RX 7900 XT 20GB?

Ornith 1.5 9B on the AMD RX 7900 XT 20GB

Ornith 1.5 9B is a 9.65B-parameter model. At Q4_K_M it needs about 6.5 GB of memory. The AMD RX 7900 XT 20GB has 19 GB usable, so it fits entirely in memory. Expect about 79 tokens/sec (67–91), with the first token after 0.4 s for a short prompt. This estimate is projected from the hardware specs; no benchmarks exist yet.

Speed by quantization

QuantizationFile sizeMemoryGenerationFirst tokenSource
Q4_K_M5.8 GBFits79 tok/s0.4 sProjected
Q8_09.8 GBFits47 tok/s0.4 sProjected
FP1619.3 GBPartial offload19 tok/s1.3 sProjected

Ornith 1.5 9B on other hardware

Other models on the AMD RX 7900 XT 20GB

All models on the AMD RX 7900 XT 20GB · Ornith 1.5 9B on all hardware

Estimates for a short prompt on a single device. Measured numbers come from community benchmarks (r/LocalLLaMA, localscore.ai and more); others are derived from similar setups or projected from specs. Open source on GitHub.