Ordered by predicted speed. Bandwidth sets decode rate; memory decides whether it runs at all.
Every figure here is computed, not measured. Fit is weights at each quantisation against device memory, with a 25% allowance for the KV cache, activations and the OS. Decode rate is the memory-bandwidth roofline at 70% efficiency. Nobody has run this model on these devices.
Device
Memory
Bandwidth
Best quality
Weights
tok/s
Fastest
NVIDIA GB200 Grace Blackwell Superchip
372.0 GB
16000.0 GB/s
q5
253.66 GB
~44.2
~55.2 q4
AMD Instinct MI355X
288.0 GB
8000.0 GB/s
q4
202.93 GB
~27.6
~27.6 q4
Apple M3 Ultra
512.0 GB
819.0 GB/s
q6
304.39 GB
~1.9
~2.8 q4
Where it runs
Taken from the card's availability section.
Platform
Id on that platform
Hugging Face
allenai/Llama-3.1-Tulu-3-405B
Verified benchmark evidence
Each row was checked against its source by a reviewer, and carries the model identifier as actually evaluated — which is not always the same as this card's.