Rent a GPU

Can the NVIDIA RTX 3090 run Qwen3 4B?

RTX 3090 × Qwen3 4B8K context
YesRuns fully on the GPU
Memory at FP169.8 GB of 24 GB
Weights 8 GBKV cache 1.2 GBRuntime 0.6 GB
QuantFP16Full quality
Speed~70tokens per second
Max context32Kthe model's full window
  1. FP16
  2. Q8_0
  3. Q6_K
  4. Q5_K_M
  5. Q4_K_M
  6. Q3_K_M
  7. Q2_K

Yes. The NVIDIA RTX 3090 can run Qwen3 4B fully in VRAM at FP16 (full quality), using about 9.8 GB of the 24 GB available, at roughly 70 tokens/second.

Try other context lengths

Run it with Ollama

With Ollama installed, one command downloads and starts Qwen3 4B:

ollama run qwen3:4b

Ollama's default download is Q4_K_M (about 4.2 GB here). You have room for FP16, which is full quality: pick that GGUF in LM Studio or from Hugging Face.

New to this? Step-by-step setup for the RTX 3090

Run it in the cloud

No NVIDIA RTX 3090? Run Qwen3 4B in the cloud.

Rent a cloud GPU by the hour. No upfront cost, stop any time.

Rent a GPU on RunPodRent a GPU on Vast.ai

Memory needed by quantization

At 8,192 tokens of context. The black line marks the 24 GB the NVIDIA RTX 3090 can use.

QuantQualityMemoryFits?Speed
FP16Full quality9.8 GBFits~70 tok/s
Q8_0Near-lossless6.1 GBFits~131 tok/s
Q6_KExcellent5.1 GBFits~170 tok/s
Q5_K_MVery good4.7 GBFits~196 tok/s
Q4_K_MGood, most popular4.2 GBFits~230 tok/s
Q3_K_MNoticeably degraded3.8 GBFits~286 tok/s
Q2_KHeavily degraded3.3 GBFits~373 tok/s

Measured speed from real RTX 3090 owners

Tokens per second that people measured on their own NVIDIA RTX 3090, next to our estimate.

No one has measured Qwen3 4B on the NVIDIA RTX 3090 yet. The speeds above are estimates. Run the benchmark and yours becomes the first real number on this page.

Have an RTX 3090? Add your real speed

One command times Qwen3 4B in your own Ollama, shows you exactly what it would send, and asks before sending anything. No sign-up, no personal data.

macOS and Linux

curl -fsSL https://gpufit.dev/bench.sh | sh -s -- qwen3:4b

Windows (PowerShell)

$env:GPUFIT_MODEL="qwen3:4b"; irm https://gpufit.dev/bench.ps1 | iex

How the benchmark works

GPUs that run Qwen3 4B comfortably

Models that run well on the NVIDIA RTX 3090

Frequently asked questions

Can NVIDIA RTX 3090 run Qwen3 4B?

Yes. The NVIDIA RTX 3090 can run Qwen3 4B fully in VRAM at FP16 (full quality), using about 9.8 GB of the 24 GB available, at roughly 70 tokens/second.

How much VRAM does Qwen3 4B need?

About 4.2 GB at Q4_K_M with 8,192 tokens of context, and about 9.8 GB at full FP16 precision.

How fast is Qwen3 4B on the NVIDIA RTX 3090?

Roughly 70 tokens per second at FP16, estimated from the NVIDIA RTX 3090's 936 GB/s memory bandwidth.