Can I Run Qwen 3 on NVIDIA L40S?

Autor: Jakub Rusinowski · Ostatnia aktualizacja: 21 lipca 2026

Yes, comfortably — you'll have ~28.2 GB of headroom running Qwen 3 32B at Q4_K_M (19.802999999999997 GB, ~35 tok/s (est.)) with room for up to 64K context.

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NVIDIA L40S 48GB
48 GB VRAM · 350 W board power
Ceny w 2026 są niestabilne — sprawdź aktualną ofertę.
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NVIDIA L40S Specs

VRAM48 GB
Memory Bandwidth864 GB/s

Qwen 3 32B on the NVIDIA L40S: VRAM by quantization

QuantVRAM neededFits 48 GB?Max context
F1667.5 GB✗ No
Q8_036.7 GB✓ Yes32K
Q6_K28.8 GB✓ Yes64K
Q5_K_M25.1 GB✓ Yes64K
Q4_K_M21.7 GB✓ Yes64K
Q3_K_M15.9 GB✓ Yes64K
Q2_K12.7 GB✓ Yes64K

VRAM needed assumes a 4K-token context with an f16 KV cache; “Max context” is the largest window that still fits in 48 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.

Qwen 3 Sizes That Fit the NVIDIA L40S

Qwen 3 32BQ4_K_M · 19.802999999999997 GB · ~35 tok/s (est.)
Qwen 3 30B-A3B (MoE)Q4_K_M · 18.414375 GB · ~191 tok/s (est.)
Qwen 3 14BQ4_K_M · 8.935500000000001 GB · ~70 tok/s (est.)
Qwen 3 8BQ4_K_M · 4.950749999999999 GB · ~109 tok/s (est.)
Buy vs. rent Qwen 3
Buy the GPU
~$7,499
NVIDIA L40S · MSRP
Rent by the hour
from $0.34/hr
RTX 4090 (24 GB) class

At 2 hrs/day, buying (~$7,499) beats renting at $0.34/hr after about 30.6 years.

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RunPod $0.34/hr
Rent on RunPod →
Vast.ai $0.35/hr · typical low · varies
Rent on Vast.ai →

Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.

FAQ

Qwen 3 on the NVIDIA L40S — does it fit?

Yes, comfortably — you'll have ~28.2 GB of headroom running Qwen 3 32B at Q4_K_M (19.802999999999997 GB, ~35 tok/s (est.)) with room for up to 64K context.

Which Qwen 3 variant fits best on the NVIDIA L40S?

Qwen 3 32B at Q4_K_M quantization (19.802999999999997 GB), estimated ~35 tokens/sec, up to 64K context.

Every Qwen 3 size on the NVIDIA L40S

SizeVRAMVerdictSpeed
Qwen 3 235B-A22B (MoE)141.9 GBDoes not fit
Qwen 3 32B19.8 GBRuns~35 tok/s
Qwen 3 30B-A3B (MoE)18.4 GBRuns~191 tok/s
Qwen 3 14B8.9 GBRuns~70 tok/s
Qwen 3 8B5.0 GBRuns~109 tok/s

Qwen 3 on Other GPUs

Popular Models on the NVIDIA L40S

VRAM Tier

Troubleshooting

Buying Guide

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