RunsLocalGPU checkerLocal AI toolsv2.1 · data Oct 16, 2026

All models / Muse Spark Open 816B-A42B

What GPU do I need to run Muse Spark Open 816B-A42B?

Muse Spark Open 816B-A42B has 816B parameters (42B active per token, mixture-of-experts). At Q4_K_M with 8K context it needs about 497.3 GB of memory. It is too large for any single consumer card or Mac in our list at Q4; it needs a multi-GPU server.

Check your own hardware

Memory by quantization (8K context)

Hardware that runs it fully in fast memory

None of the single cards or machines in our list hold it at Q4_K_M or better.

Assumes 32 GB of DDR5 system RAM for offload. Estimates only; real speeds usually land within about 20%.