Home / Models / Qwen3 30B-A3B / NVIDIA RTX 4000 20 GB

Calculated memory fit · performance is a separate section

Can Qwen3 30B-A3B run on NVIDIA RTX 4000 20 GB?

Yes. Calculated memory fit: Qwen3 30B-A3B can run entirely in this GPU’s usable VRAM at one or more supported quantizations.

Can it run?

Can it run?
Yes, full GPU fit (calculated estimate).
Full GPU fit?
Yes
Model
Qwen3 30B-A3B · 31B
GPU
NVIDIA RTX 4000 20 GB · 20 GB advertised

What else can NVIDIA RTX 4000 20 GB run? · Find other GPUs for Qwen3 30B-A3B

Memory calculation

Breakdown for Q4 at 8K context, batch size 1. Calculator v1.0.0.

Model weights17.9 GB
KV cache0.8 GB
Runtime reserve1.4 GB
Safety margin0.8 GB
Required (estimated)20.8 GB
GPU usable VRAM18.0 GB

Result: CPU RAM OFFLOAD REQUIRED

Quantization table

Quantization2K4K8K16K32K40K
BF16NoNoNoNoNoNo
FP16NoNoNoNoNoNo
Q3FitsFitsFitsFitsLimited contextLimited context
Q4OffloadOffloadOffloadOffloadOffloadOffload
Q5OffloadOffloadOffloadOffloadOffloadOffload
Q6OffloadOffloadOffloadOffloadOffloadOffload
Q8OffloadOffloadOffloadOffloadOffloadOffload

What fits entirely in VRAM?

What requires RAM offload?

Offload is shown only when the model does not fully fit in usable VRAM but stays within the modeled offload allowance.

Performance

No llama.cpp performance result is published for this pair yet. Memory fit above is unchanged. How performance is calculated

Available graphics cards

These SKUs use this GPU chip. Amazon CTAs appear only for EXACT/HIGH matches. Absence of a price does not change the compatibility result above.

Check price on Amazon

HP

HP NVIDIA RTX 4000 Ada 20 GB 4DP Graphics

20 GB · Amazon EXACT

$3501.00

Check price on Amazon
Lenovo

Lenovo NVIDIA RTX 4000 Ada 20 GB GDDR6

20 GB · Amazon unmatched

Check availability

Sources

Model: official config Qwen/Qwen3-30B-A3B (main). GPU/product specs: Icecat. Compatibility: RigForAI calculator v1.0.0 estimated VRAM · Q8 at 8K: CPU_RAM_OFFLOAD_REQUIRED. Amazon: affiliate commerce match, not a spec source.