Will It Run AI

Can Qwen 3 235B A22B run on NVIDIA H100 80GB?

NO — Won't Fit

F0Won't run
Estimated from fit model

Qwen 3 235B A22B needs ~155.1 GB but NVIDIA H100 80GB only has 80.0 GB. Try a smaller quantization or lighter model.

Runtime: llama.cppCapacity: No fitBandwidth: HighStack: StandardBottleneck: Memory capacity
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Operating mode

Choose the run profile you care about

Interactive favors responsiveness, while light API and scale-out lean harder on serving readiness. The fit stays the same, but the recommendation lens changes.

Current mode

Balanced

Balanced for general local use. Keeps the ranking neutral across personal and serving workflows.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) 155.1 GB, exceeds 80.0 GB available
155.1 GB required80.0 GB available
194% VRAM needed

75.1 GB over capacity — needs offload or smaller quantization

Fit status

Too heavy

Decode

16.4 tok/s

TTFT

11818 ms

Safe context

4K

Memory

155.1 GB / 80.0 GB

Offload

50%

Memory breakdown

Weights143.4 GB
KV Cache2.9 GB
Runtime0.9 GB
Headroom8.0 GB

See how fast it feels

With memory offload — actual speed may be lower
See how fast it feelsQwen 3 235B A22B on NVIDIA H100 80GB
1st promptCold start — includes initialization
>Solve: If a train travels at 60 mph for 2.5 hours, how far does it go?
Let me work through this step by step. Given information: - Speed = 60 mph (miles per hour) - Time = 2.5 hours Formula: Distance = Speed x Time Calculation: Distance = 60 mph x 2.5 h = 150 miles The train travels 150 miles. Double-check: at 60 mph the train covers 60 miles each hour. In half an hour it covers 30 miles. So in 2.5 hours: 60 + 60 + 30 = 150 miles. Confirmed.
2nd promptWarm — model ready, no init overhead
>What if the train stops for 20 minutes halfway?
The stop doesn't change the total distance covered while moving, but it affects total trip time. Breakdown: - First half: 1.25 hours at 60 mph = 75 miles - Stop: 20 minutes (no distance) - Second half: 1.25 hours at 60 mph = 75 miles Total distance: 150 miles (same) Total time: 2.5 h + 0.33 h = 2.83 hours Average speed: 150 / 2.83 = 53 mph The distance stays the same but average speed drops to 53 mph because of the stop.
Estimated: 16.4 tok/s decode · 11.8s TTFT (warm) · 41 tok/s prefill

What limits this setup

Usable VRAM is the main blocker for this model.

Not enough usable memory

The model needs 155.1 GB, but this setup only exposes 80.0 GB of usable VRAM.

Best improvement path

Add more VRAM headroom

The first useful upgrade is more dedicated VRAM so you can fit the model without shrinking context or dropping to a much lower quant.

Performance by workload

WorkloadGradeFitDecodeTTFTContext
ChatFToo heavy15.2 tok/s6943 ms4K
CodingFToo heavy15.0 tok/s12926 ms4K
Agentic CodingFToo heavy14.5 tok/s19379 ms4K
ReasoningFToo heavy15.0 tok/s15276 ms4K
RAGFToo heavy14.5 tok/s24223 ms4K

Quantization options

How Qwen 3 235B A22B (235B params) fits at each quantization level on NVIDIA H100 80GB (80.0 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
91.7 GB
LowF0
Q3_K_S
3
115.2 GB
LowF0
NVFP4
4
131.6 GB
MediumF0
Q4_K_M
4
143.4 GB
MediumF0
Q5_K_M
5
169.2 GB
HighF0
Q6_K
6
192.7 GB
HighF0
Q8_0
8
251.5 GB
Very HighF0
F16
16
481.7 GB
MaximumF0

Opciones de mejora

Hardware que ejecuta bien Qwen 3 235B A22B

Frequently asked questions

Can NVIDIA H100 80GB run Qwen 3 235B A22B?

No, Qwen 3 235B A22B requires more memory than NVIDIA H100 80GB provides.

How much VRAM does Qwen 3 235B A22B need?

Qwen 3 235B A22B (235B parameters) requires approximately 155.1 GB of memory with Q4_K_M quantization.

What is the best quantization for Qwen 3 235B A22B?

The recommended quantization for Qwen 3 235B A22B is Q4_K_M, which balances quality and memory efficiency.

What speed will Qwen 3 235B A22B run at on NVIDIA H100 80GB?

On NVIDIA H100 80GB, Qwen 3 235B A22B achieves approximately 15.0 tokens per second decode speed with a time-to-first-token of 12926ms using Q4_K_M quantization.

Can NVIDIA H100 80GB run Qwen 3 235B A22B for coding?

For coding workloads, Qwen 3 235B A22B on NVIDIA H100 80GB receives a F grade with 15.0 tok/s and 4K context.

What context window can Qwen 3 235B A22B use on NVIDIA H100 80GB?

On NVIDIA H100 80GB, Qwen 3 235B A22B can safely use up to 4K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.

What should I upgrade first if Qwen 3 235B A22B feels slow on NVIDIA H100 80GB?

Add more VRAM headroom. The first useful upgrade is more dedicated VRAM so you can fit the model without shrinking context or dropping to a much lower quant.

See all results for NVIDIA H100 80GBSee all hardware for Qwen 3 235B A22B
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<iframe src="https://willitrunai.com/embed/qwen-3-235b-a22b-on-h100-80gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>

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