Can Llama 3.3 70B Instruct run on NVIDIA H100 80GB?

YES — Runs Great

B56Good

Estimated from fit model

Llama 3.3 70B Instruct needs ~60.1 GB VRAM. NVIDIA H100 80GB has 80.0 GB. With Q4_K_M quantization, expect ~66 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) — 60.1 GB, 65.9 tok/s, Runs well

60.1 GB required80.0 GB available

75% VRAM used

Fit status

Runs well

Decode

65.9 tok/s

TTFT

2938 ms

Safe context

55K

Memory

60.1 GB / 80.0 GB

Memory breakdown

Weights42.7 GB

KV Cache8.2 GB

Runtime1.2 GB

Headroom8.0 GB

See how fast it feels

See how fast it feelsLlama 3.3 70B Instruct on NVIDIA H100 80GB
1st promptCold start — includes initialization
>What is local AI inference?
Local AI inference means running an AI language model directly on your own hardware — your laptop, desktop, or server — instead of sending requests to a remote cloud API.

When you run inference locally the model weights are loaded into your GPU or unified memory. Each token you generate requires reading those weights from memory, so memory bandwidth is the main bottleneck for decode speed.

Key benefits of running locally:
  - Full privacy: your prompts never leave your machine
  - No per-token cost or rate limits
  - Works offline once the model is downloaded
  - Latency depends only on your hardware
2nd promptWarm — model ready, no init overhead
>How much VRAM do I need?
It depends on the model size and quantization level. A rough rule of thumb:

  Model size     Q4 (4-bit)    Q8 (8-bit)    FP16
  7B params      ~4.3 GB       ~7.5 GB       ~14 GB
  13B params     ~7.9 GB       ~13.9 GB      ~26 GB
  70B params     ~42.7 GB      ~74.9 GB      ~140 GB

Most people use 4-bit quantization (Q4_K_M) which gives 90-95% of full quality at a fraction of the memory. A 24 GB GPU can comfortably run most 7B-13B models.
Estimated: 65.9 tok/s decode · 2.9s TTFT (warm) · 165 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	B	Runs well	65.9 tok/s	1602 ms	55K
Coding	B	Runs well	65.9 tok/s	2938 ms	55K
Agentic Coding	C	Tight fit	65.9 tok/s	4273 ms	55K
Reasoning	B	Runs well	65.9 tok/s	3472 ms	55K
RAG	C	Tight fit	65.9 tok/s	5341 ms	55K

Inference speed

Llama 3.3 70B Instruct inference speed — tokens per second by GPU & Mac

Estimated decode speed (tokens/sec) for Llama 3.3 70B Instruct 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 ~15 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	14.6	Heavy offload
MacBook Pro M4 Max 128GB	128 GB	Q4_K_M	14.1	Fits
Mac Studio M3 Ultra 256GB	256 GB	Q4_K_M	13.0	Fits
Mac Studio M2 Ultra 128GB	128 GB	Q4_K_M	10.9	Fits
Mac Studio M1 Ultra 128GB	128 GB	Q4_K_M	10.3	Fits
MacBook Pro M4 Max 64GB	64 GB	Q4_K_M	9.9	Too big
2× RTX 4090 24GB	48 GB	Q4_K_M	7.7	Heavy offload
RTX 5090 32GB	32 GB	Q4_K_M	7.0	Too big
2× RTX 3090 24GB	48 GB	Q4_K_M	7.0	Heavy offload
4× RTX 3060 12GB	48 GB	Q4_K_M	6.2	Heavy offload
MacBook Pro M4 Pro 48GB	48 GB	Q4_K_M	4.7	Too big
MacBook Pro M3 Max 64GB	64 GB	Q4_K_M	4.0	Too big
MacBook Pro M1 Max 64GB	64 GB	Q4_K_M	3.6	Too big
RTX 4090 24GB	24 GB	Q4_K_M	2.7	Too big
RX 7900 XTX 24GB	24 GB	Q4_K_M	2.4	Too big
RTX 3090 24GB	24 GB	Q4_K_M	2.3	Too big
RTX 4080 Super 16GB	16 GB	Q4_K_M	2.1	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 3.3 70B Instruct (70B params) fits at each quantization level on NVIDIA H100 80GB (80.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	27.3 GB	Low	C44
Q3_K_S	3	34.3 GB	Low	C46
NVFP4	4	39.2 GB	Medium	C47
Q4_K_M	4	42.7 GB	Medium	C48
Q5_K_M	5	50.4 GB	High	C48
Q6_KBest for your GPU	6	57.4 GB	High	C48
Q8_0	8	74.9 GB	Very High	F0
F16	16	143.5 GB	Maximum	F0

Get started

Copy-paste commands to run Llama 3.3 70B Instruct on your machine.

Run

lms load hf-maziyarpanahi--llama-3-3-70b-instruct-gguf && lms server start

Frequently asked questions

Can NVIDIA H100 80GB run Llama 3.3 70B Instruct?

Yes, NVIDIA H100 80GB can run Llama 3.3 70B Instruct with a B grade (Runs well). Expected decode speed: 65.9 tok/s.

How much VRAM does Llama 3.3 70B Instruct need?

Llama 3.3 70B Instruct (70B parameters) requires approximately 60.1 GB of memory with Q4_K_M quantization.

What is the best quantization for Llama 3.3 70B Instruct?

The recommended quantization for Llama 3.3 70B Instruct is Q4_K_M, which balances quality and memory efficiency.

What speed will Llama 3.3 70B Instruct run at on NVIDIA H100 80GB?

On NVIDIA H100 80GB, Llama 3.3 70B Instruct achieves approximately 65.9 tokens per second decode speed with a time-to-first-token of 2938ms using Q4_K_M quantization.

Can NVIDIA H100 80GB run Llama 3.3 70B Instruct for coding?

For coding workloads, Llama 3.3 70B Instruct on NVIDIA H100 80GB receives a B grade with 65.9 tok/s and 55K context.

What context window can Llama 3.3 70B Instruct use on NVIDIA H100 80GB?

On NVIDIA H100 80GB, Llama 3.3 70B Instruct can safely use up to 55K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.

See all results for NVIDIA H100 80GB See all hardware for Llama 3.3 70B Instruct

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