Llama 3.3 70B has 70.5B parameters. In BF16 its weights alone take 131 GiB; quantized to 4-bit, about 39.9 GiB. Each 32K-token request adds 10.0 GiB of KV cache. Cheapest way to run it today: 2 × GeForce RTX 3090 (24 GB) at $0.286 per hour.
Read every day from Hugging Face. Split files are added together; vision projectors are left out.
How many GPUs to run Llama 3.3 70B
Fewest GPUs that fit the weights plus one 8K-token request. Data-center GPUs use vLLM (90% of memory usable), the others llama.cpp. Several GPUs split the model with tensor or pipeline parallelism.
GPU
BF16 / FP16
FP8 / INT8
4-bit (GGUF Q4_K_M)
GeForce RTX 4090 24 GB
7
4
2
GeForce RTX 5090 32 GB
5
3
2
RTX PRO 6000 Blackwell 96 GB
2
1
1
Mac M5 Max 128 GB 96 GB usable
2
1
1
NVIDIA H100 80 GB
2
2
1
NVIDIA H200 141 GB
2
1
1
NVIDIA B200 (HGX) 180 GB
1
1
1
Cheapest way to run Llama 3.3 70B today
For each GPU: the fewest cards that fit Llama 3.3 70B with one 8K-token request, the most faithful weight format at that count, and the cheapest on-demand price (2026-10-10).
On-demand prices from RunPod, Vast.ai, Verda and Azure, checked every hour. Serving many users needs more KV cache, so more memory: size it in the calculator. Some links are affiliate links: StudioTV may earn a commission, at no extra cost to you.
KV cache: how memory grows with context
Architecture: 80 layers · GQA, 8 KV heads × 128. Every layer keeps keys and values for every token (grouped-query attention), so the cache grows linearly with context.
Context per request
BF16 cache
FP8 cache
8K tokens
2.50 GiB
1.25 GiB
32K tokens
10.0 GiB
5.00 GiB
128K tokens
40.0 GiB
20.0 GiB
Llama 3.3 70B VRAM FAQ
How much VRAM does Llama 3.3 70B need?
In BF16 the weights alone take 131 GiB (141 GB). In FP8 that is 67.7 GiB, and about 39.9 GiB with 4-bit quantization (Q4_K_M). Each request then adds KV cache: 2.50 GiB at 8K tokens and 10.0 GiB at 32K (BF16 cache).
Can Llama 3.3 70B run on a single RTX 4090 (24 GB)?
No. Even in 4-bit it needs 2 RTX 4090s. In 4-bit it fits on a single RTX PRO 6000 Blackwell (96 GB).
What is the cheapest way to run Llama 3.3 70B?
On 2026-10-10, the cheapest on-demand setup is 2 × GeForce RTX 3090 (24 GB) with 4-bit (GGUF Q4_K_M) weights on Vast.ai, at $0.286 per hour (about $208.78 per month). Next: 1 × RTX 6000 Ada (48 GB) with 4-bit (GGUF Q4_K_M) weights on Vast.ai, at $0.494 per hour. Sized for one 8K-token request; prices are checked every hour.
How many H100 GPUs does Llama 3.3 70B need?
With one request and an 8K-token context: 2 in BF16, 2 in FP8 and 1 in 4-bit (vLLM, 90% of memory usable). Serving many users at once needs more memory for their KV caches: the calculator sizes that for you.
Llama 3.3 70B VRAM badge
For a model card or a README: the 4-bit size and the smallest GPU it fits on, linked to this page. Data as JSON: /api/models/llama-3-3-70b.json.
Estimates, not guarantees: computed from the official config.json with the same engine as the LLM VRAM Calculator. Real usage depends on your engine version and settings.