AMD · 192 GB HBM3 · 5300 GB/s bandwidth ·
Alibaba · 72.7B · model ctx up to 128K
Yes — the MI300X 192GB (192 GB HBM3) can run Qwen2.5-72B-Instruct. At Q4 with the default 8K context it needs ≈ 55.53 GB VRAM (weights 39.99 GB + KV cache 14.54 GB + 1 GB runtime overhead), which fits within 192 GB. Decode at Q4/8K: ≈ 46.4 tok/s (estimated, batch 1). FP16 (≈ 160.94 GB) also fits, at ≈ 12.8 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
48.26 GB
Yes
46.4est.
Q4
8K default
55.53 GB
Yes
46.4est.
Q4
32K
99.15 GB
Yes
46.4est.
FP16
4K
153.67 GB
Yes
12.8est.
FP16
8K default
160.94 GB
Yes
12.8est.
FP16
32K
204.56 GB
No
32.1est.
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).