Can Llama 3.1 70B run on H100 NVL 188GB?

YES — Runs Great

A81Great

Estimated from fit model

Llama 3.1 70B needs ~67.6 GB VRAM. H100 NVL 188GB has 188.0 GB. With Q4_K_M quantization, expect ~161 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: HighStack: BasicBottleneck: Balanced

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) — 67.6 GB, 160.9 tok/s, Runs well

67.6 GB required188.0 GB available

36% VRAM used

Fit status

Runs well

Decode

160.9 tok/s

TTFT

1203 ms

Safe context

128K

Memory

67.6 GB / 188.0 GB

Memory breakdown

Weights42.7 GB

KV Cache4.9 GB

Runtime1.2 GB

Headroom18.8 GB

See how fast it feels

See how fast it feelsLlama 3.1 70B on H100 NVL 188GB
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: 160.9 tok/s decode · 1.2s TTFT (warm) · 402 tok/s prefill

What limits this setup

This setup is broadly balanced for this model.

No major red flags

This recommendation has enough memory headroom and acceptable estimated speed for the selected workload.

Best improvement path

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	A	Runs well	160.9 tok/s	656 ms	128K
Coding	A	Runs well	160.9 tok/s	1203 ms	128K
Agentic Coding	A	Runs well	160.9 tok/s	1750 ms	128K
Reasoning	A	Runs well	160.9 tok/s	1422 ms	128K
RAG	A	Runs well	160.9 tok/s	2188 ms	128K

Inference speed

Llama 3.1 70B inference speed — tokens per second by GPU & Mac

Estimated decode speed (tokens/sec) for Llama 3.1 70B at Q4_K_M across popular GPUs and Apple Silicon, including multi-GPU rigs, using the fastest local runtime per device. Fastest is 2× RX 7900 XTX 24GB at ~18 tok/s. Speed is memory-bandwidth bound, so cards that fit the whole model in VRAM run far faster than ones that offload to system RAM.

GPU / Mac	Memory	Quant	Speed (tok/s)	Fits?
2× RX 7900 XTX 24GB	48 GB	Q4_K_M	18.0	Heavy offload
MacBook Pro M4 Max 128GB	128 GB	Q4_K_M	15.3	Fits
Mac Studio M3 Ultra 256GB	256 GB	Q4_K_M	14.2	Fits
Mac Studio M2 Ultra 128GB	128 GB	Q4_K_M	11.8	Fits
MacBook Pro M4 Max 64GB	64 GB	Q4_K_M	11.6	Too big
Mac Studio M1 Ultra 128GB	128 GB	Q4_K_M	11.2	Fits
2× RTX 4090 24GB	48 GB	Q4_K_M	9.5	Heavy offload
RTX 5090 32GB	32 GB	Q4_K_M	8.7	Too big
2× RTX 3090 24GB	48 GB	Q4_K_M	8.7	Heavy offload
4× RTX 3060 12GB	48 GB	Q4_K_M	7.7	Heavy offload
MacBook Pro M4 Pro 48GB	48 GB	Q4_K_M	5.4	Too big
MacBook Pro M3 Max 64GB	64 GB	Q4_K_M	4.6	Too big
MacBook Pro M1 Max 64GB	64 GB	Q4_K_M	4.3	Too big
RTX 4090 24GB	24 GB	Q4_K_M	3.0	Too big
RX 7900 XTX 24GB	24 GB	Q4_K_M	2.7	Too big
RTX 3090 24GB	24 GB	Q4_K_M	2.5	Too big
RTX 4080 Super 16GB	16 GB	Q4_K_M	2.3	Too big
RTX 4070 12GB	12 GB	Q4_K_M	2.0	Too big
RTX 3060 12GB	12 GB	Q4_K_M	2.0	Too big
RTX 4060 8GB	8 GB	Q4_K_M	2.0	Too big

Estimates for single-stream decoding at Q4_K_M; real tokens/sec varies with prompt length, context, batch size, and runtime build. Prompt processing (prefill) is faster than the decode figures shown here.

Quantization options

How Llama 3.1 70B (70B params) fits at each quantization level on H100 NVL 188GB (188.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	27.3 GB	Low	B70
Q3_K_S	3	34.3 GB	Low	A71
NVFP4	4	39.2 GB	Medium	A71
Q4_K_M	4	42.7 GB	Medium	A72
Q5_K_M	5	50.4 GB	High	A72
Q6_K	6	57.4 GB	High	A73
Q8_0	8	74.9 GB	Very High	A75
F16Best for your GPU	16	143.5 GB	Maximum	A79

Get started

Copy-paste commands to run Llama 3.1 70B on your machine.

Run

ollama run llama3.1

Your hardware

More models your H100 NVL 188GB can run

Model	Params	Grade	Decode
Devstral 2 123B Instruct	123B	S	91.6 tok/s
Qwen 3.5 122B A10B	122B	S	254 tok/s
DeepSeek V4 Flash	284B	S	136.1 tok/s
Mistral Small 4 119B	119B	S	275.4 tok/s
GPT-OSS 120B	117B	S	96.3 tok/s

Frequently asked questions

Can H100 NVL 188GB run Llama 3.1 70B?

Yes, H100 NVL 188GB can run Llama 3.1 70B with a A grade (Runs well). Expected decode speed: 160.9 tok/s.

How much VRAM does Llama 3.1 70B need?

Llama 3.1 70B (70B parameters) requires approximately 67.6 GB of memory with Q4_K_M quantization.

What is the best quantization for Llama 3.1 70B?

The recommended quantization for Llama 3.1 70B is Q4_K_M, which balances quality and memory efficiency.

What speed will Llama 3.1 70B run at on H100 NVL 188GB?

On H100 NVL 188GB, Llama 3.1 70B achieves approximately 160.9 tokens per second decode speed with a time-to-first-token of 1203ms using Q4_K_M quantization.

Can H100 NVL 188GB run Llama 3.1 70B for coding?

For coding workloads, Llama 3.1 70B on H100 NVL 188GB receives a A grade with 160.9 tok/s and 128K context.

What context window can Llama 3.1 70B use on H100 NVL 188GB?

On H100 NVL 188GB, Llama 3.1 70B can safely use up to 128K tokens of context. The model's official context limit is 128K, but available memory constrains the safe maximum.

See all results for H100 NVL 188GB See all hardware for Llama 3.1 70B

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