How fast will Gemma 4 26B A4B feel on the AMD Instinct MI50 32GB?

Gemma 4 26B A4B on the AMD Instinct MI50 32GB

Gemma 4 26B A4B is a 25.81B-parameter mixture-of-experts model (3.8B active per token). At Q4_K_M it needs about 17.7 GB of memory. The AMD Instinct MI50 32GB has 30 GB usable, so it fits entirely in memory. Expect about 56 tokens/sec (49–63), with the first token after 0.4 s for a short prompt. This estimate is based on community benchmarks of this exact setup.

Speed by quantization

QuantizationFile sizeMemoryGenerationFirst tokenSource
Q4_K_M16.9 GBFits56 tok/s0.4 sMeasured
Q8_026.9 GBFits166 tok/s0.4 sDerived
FP1650.5 GBDoesn't fitWon't run——

Gemma 4 26B A4B on other hardware

Other models on the AMD Instinct MI50 32GB

All models on the AMD Instinct MI50 32GB · Gemma 4 26B A4B 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.