Won't fitfp16 · 4K ctx · batch 1

Does H100 run Mixtral-8x7B-v0.1? No at fp16.

At fp16 precision, Mixtral-8x7B-v0.1 (47 B MoE parameters) needs roughly 111.2 GB of VRAM. H100 only has 80 GB, short by 31.2 GB. INT4 quantization brings it down to 28.9 GB — that fits. For fp16 accuracy, move to H200.

139%
VRAM
Won't fit
Estimated VRAM (fp16)
111.2 GB
of 80 GB on H100· 31.2 GB short
Tok/sec
97
TFTT
1258ms
Power
395W
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Memory breakdown (fp16)

Shared Weights
14.00 GB
Expert Weights
93.40 GB
KV Cache
0.50 GB
Activations
2.00 GB
Framework Overhead
1.27 GB

Quantization comparison

Lower precision = less VRAM with a small quality trade-off. Quality order: FP16 > INT8 > INT4.

PrecisionVRAMUtilisationFits on H100?
FP16 (full precision)111.2 GB139%Won't fit
INT8 (8-bit)56.3 GB70%Runs well
INT4 / Q4 (4-bit)28.9 GB36%Runs easily

Frequently asked

Can H100 run Mixtral-8x7B-v0.1?
Not at fp16 — Mixtral-8x7B-v0.1 needs about 111.2 GB while H100 has 80 GB. It fits at INT4 quantization (28.9 GB) with some accuracy trade-off. For full precision, use H200 instead.
How much VRAM does Mixtral-8x7B-v0.1 use?
About 111.2 GB at fp16, 28.9 GB at INT4 (for a 4K context, batch size 1). Longer contexts add to KV cache size; larger batches increase activations.
What's the fastest way to run Mixtral-8x7B-v0.1 on H100?
Use a production inference engine like vLLM, SGLang, or TensorRT-LLM with paged attention — they cut KV cache 2–3× vs the naive estimate and batch multiple requests efficiently. For H100, enable Flash Attention 2.
Where can I rent a H100?
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