Estimates from memory-bandwidth formula; rows marked "measured" override. Methodology.
Fit & speed by quant and context
Quant
Context
VRAM needed
Fits?
tok/s (decode)
Q4
4K
20.39 GB
Yes
322.4±est.
Q4
8K default
20.69 GB
Yes
322.4±est.
Q4
32K
22.49 GB
Yes
322.4±est.
FP16
4K
70.7 GB
No
30.7±est.
FP16
8K default
71.0 GB
No
30.4±est.
FP16
32K
72.8 GB
No
28.9±est.
Fits = weights + KV(ctx) + 1 GB overhead ≤ 95% of VRAM. Measured anchors are context-agnostic; the fit verdict is recomputed per context. A missing tok/s means the model is far beyond this card (offload-only territory).
VRAM breakdown at 8K context
Quant
Weights
KV cache
Overhead
Total needed
V100 32GB SXM2 VRAM
Q4
19.09 GB
0.6 GB
1 GB
20.69 GB
32 GB
FP16
69.4 GB
0.6 GB
1 GB
71.0 GB
32 GB
Other GPUs that run qwen35b-a3b-fable-sft-abliterated