Nanbeige4.3 33B Base — Hardware Requirements & GPU Compatibility
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Nanbeige4.3 33B Base is a 33.1B-parameter open language model from Nanbeige. It supports a context window of up to 131,072 tokens. At Q4_K_M it needs about 20.61 GB of VRAM — see which GPUs and Macs can run it below.
Usable on a 24 GB GPU
Runs on 24 GB (Q4_K_M · ~32 tok/s · 16K)Macs from 24 GB (Q3_K_M · ~13 tok/s)
Apache 2.0
Reference GPU · RTX 4090 24 GB
Estimates, ±20% · how we estimate
Run Nanbeige4.3 33B Base
One recommended way. Every other method, OS and quant is in the step-by-step guide.Each way opens a step-by-step guide for your OS and quant.
Recommended
vllm serve Nanbeige/Nanbeige4.3-33B-Base --max-model-len 16384vLLM repo with its own quantisation
Download: Weights on Hugging Face
Ways to runOther ways
each opens step-by-stepRun in cloud
Runs on RTX 5090 (32 GB) (8 GB headroom) · Q4_K_M
- Generation speed
- ~57 tok/s
- generation speed
- Cost per 1M output tokens
- $2.54
- per 1M output tokens
How Much VRAM Does Nanbeige4.3 33B Base Need?
Select a quantization level; the listed hardware adheres to it.
| Quantization | VRAM | +32K | On RTX 4090 (reference) | |
|---|---|---|---|---|
| 14.8 GB | 21.4 GB | 2-bit · K-quant — 2-bit quantization with K-quant improvements | Fits: 32K context · ~44 tok/s | |
| 16.9 GB | 23.4 GB | 3-bit medium — 3-bit medium quantization | Fits: 32K context · ~39 tok/s | |
| 20.6 GB | 27.2 GB | 4-bit medium — 4-bit medium quantization — most popular sweet spot | Fits: 16K context · ~32 tok/s | |
| 24.3 GB | 30.9 GB | 5-bit medium — 5-bit medium quantization — good quality/size tradeoff | Does not fit: needs 27.4 GB | |
| 28.1 GB | 34.6 GB | 6-bit, very good — 6-bit quantization, very good quality | Does not fit: needs 31.1 GB | |
| 33.9 GB | 40.4 GB | 8-bit, near-lossless — 8-bit quantization, near-lossless | Does not fit: needs 36.9 GB | |
| 67.0 GB | 73.5 GB | 16-bit · bfloat — Brain floating point 16 — preferred for training | Does not fit: needs 70 GB |
Selected Q4_K_M
4-bit medium quantization23.7GBat 16K context
- Weights
- 19.9 GB
- KV cache
- 3.5 GB
- Overhead
- 0.3 GB
Fits RTX 4090 (reference) · 0.3 GB free · ~32 tok/s
≥50 tok/s needs ≥1.58 TB/s · RTX 5090 ~57
Which Hardware Can Run Nanbeige4.3 33B Base?
Q4_K_M · 20.6 GBNanbeige4.3 33B Base (Q4_K_M) requires 20.6 GB of VRAM to load the model weights. For comfortable inference with headroom for KV cache and system overhead, 27+ GB is recommended. Using the full 131K context window can add up to 27.5 GB, bringing total usage to 48.1 GB. 7 GPUs can run it, including NVIDIA GeForce RTX 5090, NVIDIA GeForce RTX 3090 Ti. 100 devices with unified memory can run Nanbeige4.3 33B Base, including Mac Studio (M3 Ultra, 256GB), Mac Studio (M3 Ultra, 512GB), Mac Studio M1 Max (32 GB).
20 GB
Q4_K_M · best fit Q3_K_M (19.9 GB)
1 GPU
RX 7900 XT~28Simulate output on RX 7900 XT32–40 GB
fits · 8.3 GB free · up to 32K ctx
1 GPU · 3 Mac classes · 4 device families
RTX 5090~57Simulate output on RTX 5090M5 Max36 GB~16Simulate output on Mac Studio M5 Max (36 GB)M532 GB~5Simulate output on MacBook Air 13" M5 (32 GB)Orin~7Simulate output on NVIDIA Jetson AGX Orin 32GBSnapdragon X Elite (X1E-80-100)~4Simulate output on Snapdragon X Elite Copilot+ PC
By VRAM tier · typical GPUs and Macs at Q4_K_M
Similar models
6| Model | Score | VRAM | tok/s | Why it is similar |
|---|---|---|---|---|
| MiniCPM V 4.7 35B A3BOpenBMB | — | 22.1 GB | ~169 | same size |
| NVIDIA Nemotron 3.5 Lightning 30B A3B BF16NVIDIA | — | 19.3 GB | ~197 | same size |
| Agents A1InternScience | — | 21.5 GB | ~171 | same size |
| Ornith 1.0 35BDeep Reinforce | — | 21.5 GB | ~171 | same size |
| EXAONE 4.5 33BLGAI-EXAONE | — | 23.9 GB | ~33 | same size |
| Gemma 4 31BGoogle | — | 21.7 GB | ~32 | same size |
Fine-tunes & variants(1)
Specifications
- Publisher
- Nanbeige
- Parameters
- 33.1B
- Architecture
- LlamaForCausalLM
- Context Length
- 131,072 tokens
- Vocabulary Size
- 166,912
- Release Date
- 2026-10-24
- License
- Apache 2.0
Frequently Asked Questions
How much VRAM does Nanbeige4.3 33B Base need?
Nanbeige4.3 33B Base requires 20.6 GB of VRAM at Q4_K_M, or 67.0 GB at BF16. Full 131K context adds up to 27.5 GB (48.1 GB total).
VRAM = Weights + KV Cache + Overhead
Weights = 33.1B × 4.8 bits ÷ 8 = 19.9 GB
KV Cache + Overhead ≈ 0.7 GB (at 2K context + ~0.3 GB framework)
Fit ratings and hardware model lists check this model with room for a 16K-token context, which needs a little more memory.
KV Cache + Overhead ≈ 28.2 GB (at full 131K context)
VRAM usage by quantization
Can NVIDIA GeForce RTX 4090 run Nanbeige4.3 33B Base?
Yes, at Q4_K_M (20.6 GB) or lower. Higher quantizations like Q5_K_M (24.3 GB) exceed the NVIDIA GeForce RTX 4090's 24 GB.
What's the best quantization for Nanbeige4.3 33B Base?
For Nanbeige4.3 33B Base, Q4_K_M (20.6 GB) offers the best balance of quality and VRAM usage. Q5_K_M (24.3 GB) provides better quality if you have the VRAM. The smallest option is Q2_K at 14.8 GB.
VRAM requirement by quantization
★ Recommended — best balance of quality and VRAM usage.
Can I run Nanbeige4.3 33B Base on a Mac?
Yes — Mac Mini M5 Pro (24 GB) and 106 other Macs can run Nanbeige4.3 33B Base, the smallest at Q3_K_M. Apple Silicon uses unified memory, so the model shares RAM with the system. At Q4_K_M you need at least 20.6 GB of usable unified memory (RAM minus macOS overhead), from Mac Studio M1 Max (32 GB).
Can I run Nanbeige4.3 33B Base locally?
Yes — Nanbeige4.3 33B Base can run locally on consumer hardware. Popular tools include Ollama, LM Studio, and llama.cpp.
How fast is Nanbeige4.3 33B Base?
At Q4_K_M, Nanbeige4.3 33B Base can reach ~233 tok/s on AMD Instinct MI350X. On NVIDIA GeForce RTX 4090: ~32 tok/s. Speed depends mainly on GPU memory bandwidth. Real-world results typically within ±20%.
tok/s = (bandwidth GB/s ÷ model GB) × efficiency
Example: NVIDIA B200 → 8000 ÷ 20.6 × 0.65 = ~252 tok/s
Estimated speed at Q4_K_M (20.6 GB)
Real-world results typically within ±20%. Speed depends on batch size, quantization kernel, and software stack.
What's the download size of Nanbeige4.3 33B Base?
At Q4_K_M, the download is about 19.87 GB. The full-precision BF16 version is 66.24 GB. The smallest option (Q2_K) is 14.08 GB.
Which GPUs can run Nanbeige4.3 33B Base?
7 consumer GPUs can run Nanbeige4.3 33B Base at Q4_K_M. Top options include NVIDIA GeForce RTX 5090, AMD Radeon RX 7900 XTX, NVIDIA GeForce RTX 3090. 1 GPU has plenty of headroom for comfortable inference.
Which devices can run Nanbeige4.3 33B Base?
100 devices with unified memory can run Nanbeige4.3 33B Base at Q4_K_M (20.6 GB), including AMD Ryzen AI 9 HX 370 (Strix Point) Laptop, ASUS Ascent GX10, Beelink GTR9 Pro (Ryzen AI Max+ 395, 128 GB), Framework Desktop (Ryzen AI Max+ 395, 128 GB). Apple Silicon Macs use unified memory shared between CPU and GPU, making them well-suited for local LLM inference.