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Can the RTX 5090 Run Qwen3 30B-A3B?

Runs

Yes. Qwen3 30B-A3B at Q4_K_M is a 18.6 GB download (Hugging Face file listing for unsloth/Qwen3-30B-A3B-GGUF), and the RTX 5090 has 32 GB of VRAM, leaving about 13.4 GB for the KV cache and runtime. One published run puts generation at 234 tokens per second; a single cited measurement, not a median. Cited run: Hardware Corner.

Model file18.6 GBQ4_K_M
VRAM32 GBRTX 5090
Headroom13.4 GBafter weights
Cited speed234 tok/s1 cited run
Bandwidth ceiling~892 tok/s1792 GB/s ÷ 2.01 GB

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Published runs for Qwen3 30B-A3B on the RTX 5090

GenerationQuantRuntimeContextSourceDate
234 tok/s q4_K_M llama.cpp 4K Hardware Cornerlabelled "qwen3moe:30b-a3b" 2025-06-01

More about this pair

How much VRAM does Qwen3 30B-A3B need?

The Q4_K_M file is 18.6 GB. Add roughly 1.5 GB for the runtime and an ~8K-token context, so about 20.1 GB of VRAM holds it comfortably. Longer contexts grow the KV cache and need more.

What speed does Qwen3 30B-A3B reach on the RTX 5090?

The fastest published run is 234 tokens per second (Hardware Corner, q4_K_M, llama.cpp). Qwen3 30B-A3B is a mixture-of-experts model that reads about 2.01 GB of active weights per token, so the RTX 5090's 1792 GB/s of memory bandwidth puts the theoretical ceiling near 892 tokens per second. That is an upper bound, not a speed estimate: kernel, launch and compute overhead keep real runs below it, and SpecPicks rejects any published figure above it.

Check another pair

See the full matrix → · All RTX 5090 benchmarks →

Qwen3 30B-A3B on other GPUs

Other models on the RTX 5090

How the checks work

The fit is the Q4_K_M file size against the card's VRAM, with 1.5 GB kept for the runtime and an ~8K context. A published run counts only if the pair fits, the run is Q4-class, its source does not call it an estimate, it is under the bandwidth ceiling (memory bandwidth ÷ GB read per token: the whole file for a dense model, only the active experts' weights for a mixture-of-experts model such as gpt-oss-20b or Qwen3 30B-A3B, which is why those can post figures above bandwidth ÷ file size), it is not slower than the same card on a model twice its size, a single run is not slower than the same card on a larger dense model, and it is not one figure pasted across many cards. The whole matrix is downloadable as a CSV under CC BY 4.0.

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This page is editorial synthesis based on publicly available information. No independent first-party benchmarking is reported.