NVIDIA · 80 GB HBM2e · 2039 GB/s bandwidth ·
Alibaba · 14.8B · model ctx up to 128K
Yes — the A100 80GB SXM4 (80 GB HBM2e) can run Qwen2.5-14B-Instruct. At Q4 with the default 8K context it needs ≈ 12.1 GB VRAM (weights 8.14 GB + KV cache 2.96 GB + 1 GB runtime overhead), which fits within 80 GB. Decode at Q4/8K: ≈ 98.02 tok/s (measured, batch 1). FP16 (≈ 33.56 GB) also fits, at ≈ 24.1 tok/s (estimated). Estimates come from memory-bandwidth math; rows tagged measured override estimates. Relative ranking is more reliable than absolute tok/s. Methodology.
Fit & speed by quant and context
Quant
Context
VRAM needed
Fits?
tok/s (decode)
Q4
4K
10.62 GB
Yes
98.02measured
Q4
8K default
12.1 GB
Yes
98.02measured
Q4
32K
20.98 GB
Yes
98.02measured
FP16
4K
32.08 GB
Yes
24.1est.
FP16
8K default
33.56 GB
Yes
24.1est.
FP16
32K
42.44 GB
Yes
24.1est.
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).