RTX 4070 Mobile vs L40
Head-to-head specifications
| Metric | RTX 4070 Mobile | L40 | Difference |
|---|---|---|---|
| 3DMark Time Spy | 9,904 | 31,682 | -68.7% |
| Avg FPS @ 1080p | 86 | 231 | -62.8% |
| Avg FPS @ 1440p | 53 | 147 | -63.9% |
| Avg FPS @ 4K | 29 | 84 | -65.5% |
| FP32 compute (TFLOPS) | 24.8 | 90.5 | -72.6% |
| VRAM | 12 GB GDDR6X | 48 GB GDDR6 | — |
| Memory bandwidth (GB/s) | 504 | 864 | -41.7% |
| TDP (W) | 120 | 300 | — |
| Stable Diffusion (it/s) | 9.9 | 36.2 | -72.7% |
| LLM inference (tokens/s) | 40 | 53 | -24.5% |
- L40 averages 147 fps at 1440p versus 53 fps — about 64% faster.
- RTX 4070 Mobile draws less power (120W vs 300W).
Verdict: RTX 4070 Mobile or L40?
RTX 4070 Mobile advantages
- Power efficiency (+60%)
L40 advantages
- 1440p gaming (+64%)
- 4K gaming (+65%)
- Synthetic benchmark performance (+69%)
- Video memory (+75%)
- Memory bandwidth (+42%)
- AI image generation (+73%)
- Local LLM inference (+25%)
Which should you choose?
- Choose the RTX 4070 Mobile if you want lower power draw, heat and noise.
- Choose the L40 if you game at 1440p.
RTX 4070 Mobile vs L40: which should you choose?
RTX 4070 Mobile — NVIDIA laptop graphics card (2023, Ada Lovelace) with 12 GB of GDDR6X, averaging 53 fps at 1440p.
L40 — NVIDIA desktop graphics card (2022, Ada Lovelace) with 48 GB of GDDR6, averaging 147 fps at 1440p.
RTX 4070 Mobile vs L40: L40 is faster for gaming. L40 averages 147 fps at 1440p versus 53 fps — about 64% faster. RTX 4070 Mobile draws less power (120W vs 300W).
1080p, 1440p and 4K
At 1440p — the most common enthusiast resolution — the L40 averages 147 fps against 53. At 4K (29 vs 84 fps) VRAM (12GB vs 48GB) and memory bandwidth matter more.
AI and creator workloads
Beyond gaming, the L40 is quicker for AI image generation (36.2 vs 9.9 it/s in Stable Diffusion) and local LLM inference (53 vs 40 tokens/s), which increasingly matters for creators and developers.
Power and value
Board power is 120 W versus 300 W, which affects PSU headroom, case cooling and noise.
The verdict
Both are credible choices in the graphics card comparison space; the specification table above lays out every metric so you can weigh the trade-offs that matter to you. Pick the one whose strengths line up with how you will actually use it.
Frequently asked questions
Is the RTX 4070 Mobile better than the L40?
L40 is the clearly stronger overall choice, winning most of the dimensions that matter. L40 averages 147 fps at 1440p versus 53 fps — about 64% faster.
What is the main difference between the RTX 4070 Mobile and the L40?
L40 averages 147 fps at 1440p versus 53 fps — about 64% faster. RTX 4070 Mobile draws less power (120W vs 300W).
Which should I choose?
Choose the RTX 4070 Mobile if you want lower power draw, heat and noise. Choose the L40 if you game at 1440p.
Methodology
Graphics cards are compared on 3DMark Time Spy scores, average gaming frame rates at 1080p/1440p/4K, FP32 compute throughput, VRAM capacity and type, memory bandwidth, board power (TDP) and launch MSRP — plus AI workload throughput (Stable Diffusion iterations/s and local LLM tokens/s) where measured. Vintage and server GPUs without modern benchmark results are compared on specifications only, clearly labelled. Frame rates are averages across a game suite at high settings; specific titles vary.