Qwen on NVIDIA Ada
Can I run Qwen3 235B-A22B on an L40S?
Not at Q4_K_M — it needs 135.1 GB against 44.3 GB available. You would need 4 of these cards.
Won't fit
135.1 GB of 44.3 GB · 305%0141 GB
Weights
132.8 GB
KV cache
1.5 GB
Runtime overhead
0.8 GB
Over the limit
90.8 GB
Short by 90.8 GB. You can run it with 29 of 94 layers on the L40S and the rest in system RAM, at roughly 3.90 tok/s — usable for batch work, painful for chat. A smaller quantisation or a shorter context is usually the better trade.
Generation3.90tok/s
Prompt processing1717tok/s
Max context0tokens
KV per 1K tokens0GB
Every quantisation of Qwen3 235B-A22B on a L40S
Highlighted row is the highest quality that still fits at 8K context.
| Quantisation | bpw | Weights | Total | Verdict | Max ctx | tok/s |
|---|---|---|---|---|---|---|
| FP16 / BF16 | 16.00 | 437.9 GB | 440.2 GB | Won't fit | — | 0.99 |
| INT8 / W8A8 | 8.50 | 232.3 GB | 234.6 GB | Won't fit | — | 2.00 |
| Q8_0 (GGUF) | 8.50 | 232.3 GB | 234.6 GB | Won't fit | — | 2.00 |
| FP8 (E4M3) | 8.00 | 218.9 GB | 221.2 GB | Won't fit | — | 2.14 |
| Q6_K | 6.56 | 179.5 GB | 181.8 GB | Won't fit | — | 2.70 |
| Q5_K_M | 5.67 | 155.2 GB | 157.5 GB | Won't fit | — | 3.21 |
| Q5_K_S | 5.52 | 151.1 GB | 153.4 GB | Won't fit | — | 3.33 |
| Q4_K_M | 4.85 | 132.8 GB | 135.1 GB | Won't fit | — | 3.90 |
| Q4_K_S | 4.58 | 125.5 GB | 127.8 GB | Won't fit | — | 4.22 |
| Q4_0 | 4.55 | 124.7 GB | 127.0 GB | Won't fit | — | 4.24 |
| AWQ 4-bit | 4.25 | 118.0 GB | 120.3 GB | Won't fit | — | 4.58 |
| GPTQ 4-bit | 4.25 | 118.0 GB | 120.3 GB | Won't fit | — | 4.58 |
| MXFP4 | 4.25 | 118.0 GB | 120.3 GB | Won't fit | — | 4.58 |
| IQ4_XS | 4.25 | 116.5 GB | 118.8 GB | Won't fit | — | 4.64 |
| Q3_K_M | 3.91 | 107.2 GB | 109.5 GB | Won't fit | — | 5.21 |
| IQ3_M | 3.70 | 101.5 GB | 103.8 GB | Won't fit | — | 5.63 |
| IQ3_XXS | 3.06 | 84.1 GB | 86.4 GB | Won't fit | — | 7.52 |
| Q2_K | 2.63 | 72.4 GB | 74.7 GB | Won't fit | — | 9.83 |
| IQ2_XXS | 2.06 | 56.9 GB | 59.2 GB | Won't fit | — | 16.6 |
| IQ1_M | 1.75 | 48.4 GB | 50.7 GB | Won't fit | — | 26.8 |