Can I Run VibeThinker on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)?
作者： Jakub Rusinowski · 最后更新： 2026年9月6日
Yes — comfortably
Yes, comfortably — VibeThinker 3B at Q8_0 needs about 4.9 GB of the 24 GB usable on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM), leaving ~19.1 GB spare and running at ~140 tok/s (estimated), with room for about 131,072 tokens of context.
Confidence: medium · Recommended quantization: Q8_0 · Estimated speed: ~140 tok/s
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RTX 4090 Desktop (24 GB VRAM, 64 GB RAM) — what it gives a model
| Usable memory for models | 24 GB |
| Memory bandwidth | 1008 GB/s |
| Form factor | Desktop |
| Operating system | Windows or Linux |
| Memory upgradeable | Yes |
VibeThinker on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM): memory by quantization
| Quant | Memory needed | Fits 24 GB? | Max context | Est. speed | Download |
|---|---|---|---|---|---|
| F16 | 7.8 GB | ✓ Yes | 128K | ~91.1 tok/s | 6.2 GB |
| Q8_0 | 4.9 GB | ✓ Yes | 128K | ~140 tok/s | 3.3 GB |
| Q6_K | 4.2 GB | ✓ Yes | 128K | ~162.5 tok/s | 2.5 GB |
| Q5_K_M | 3.8 GB | ✓ Yes | 128K | ~175.5 tok/s | 2.2 GB |
| Q4_K_M | 3.5 GB | ✓ Yes | 128K | ~189.8 tok/s | 1.9 GB |
| Q3_K_M | 3 GB | ✓ Yes | 128K | ~220.1 tok/s | 1.3 GB |
| Q2_K | 2.7 GB | ✓ Yes | 128K | ~241.3 tok/s | 1 GB |
Which VibeThinker sizes fit
| Variant | Needs at Q4_K_M | Fits? | Est. speed |
|---|---|---|---|
| VibeThinker 3B | 3.5 GB | ✓ Fits | ~189.8 tok/s |
| VibeThinker 1.5B | 2.4 GB | ✓ Fits | ~255.1 tok/s |
What to watch out for
- This model does not publish its full attention configuration, so the KV-cache share of these figures is inferred from its parameter count rather than computed exactly.
RTX 4090 desktop limitations
- 24 GB is the sweet spot for 27–32B models at Q4; 70B needs offload or a second card.
Recommended setup
Ollama or llama.cpp (CUDA/ROCm) — vLLM if you need concurrent serving
How these numbers are calculated
- Memory need = quantized weights + KV cache at 8,192 tokens (f16) + 0.8 GB runtime overhead.
- 24 GB of VRAM on the NVIDIA GeForce RTX 4090 at 1008 GB/s.
- 64 GB of system RAM available for CPU offload when a model exceeds VRAM.
- Throughput is a memory-bandwidth roofline estimate, not a measurement. It is labelled "estimated" everywhere it appears.
- KV cache is inferred from the parameter count because this model does not publish its full attention configuration.
FAQ
Can I run VibeThinker on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)?
Yes, comfortably — VibeThinker 3B at Q8_0 needs about 4.9 GB of the 24 GB usable on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM), leaving ~19.1 GB spare and running at ~140 tok/s (estimated), with room for about 131,072 tokens of context.
Which quantization of VibeThinker should I use on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)?
Q8_0 — it needs about 4.9 GB of the 24 GB available, downloads as roughly 3.3 GB, and runs at an estimated 140 tokens/sec with up to 128K of context.
What limits VibeThinker on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)?
Nothing binding — the model fits with headroom and generates at a usable speed on this hardware.
Which runtime should I use?
Ollama or llama.cpp (CUDA/ROCm) — vLLM if you need concurrent serving
Other Computers
Other Models on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)
- Yi 1.5 Family on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)
- Aya Expanse on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)
- BitNet b1.58 on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)
- Bonsai 27B on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)
- Codestral on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)
VibeThinker on GPUs
- VibeThinker on NVIDIA GeForce RTX 5060 Ti 8GB
- VibeThinker on NVIDIA GeForce RTX 5060
- VibeThinker on NVIDIA GeForce RTX 4060
What This Model Is Good At
Model & Tools
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