L40S vs RTX 4090
L40S starts at $0.96/GPU-hour on-demand; RTX 4090 starts at $0.35/GPU-hour on-demand. Compare the exact variants, memory and published specifications below. GPU spec numbers are not benchmarks.
63.5% cheaper at RTX 4090.
checked 13 October 2026. Price alone does not establish equivalent capacity or performance.
L40S
RTX 4090
Spec sheet
| L40S | RTX 4090 | |
|---|---|---|
| Spec variant | L40S | RTX 4090 |
| Architecture | Ada Lovelace | Ada Lovelace |
| VRAM (spec variant) | 48 GB | 24 GB |
| FP16 TFLOPS (dense) | 362 | 165 |
| Memory bandwidth | 864 GB/s | 1008 GB/s |
| TDP | 350 W | 450 W |
| Interconnect | PCIe Gen4 | PCIe Gen4 |
| Launched | 2023 | 2022 |
Rental price per manufacturer-rated FP16 compute: L40S $2.65 per PFLOP-hour vs RTX 4090 $2.12. Formula: cheapest $/hr ÷ dense FP16 PFLOPS (1 PFLOP = 1000 TFLOPS). This uses L40S and RTX 4090, whose datasheets may differ from the variants above. It is not measured job throughput. Specs: L40S manufacturer, RTX 4090 manufacturer.
What they cost to rent (13 October 2026)
| L40S | RTX 4090 | |
|---|---|---|
| Cheapest on-demand $/hr | $0.96 | $0.35 |
| Cheapest spot/community $/hr | $0.79 | $0.16 |
| Cheapest source | Spheron | TensorDock |
| Providers offering it | 17 | 6 |
Cheapest on-demand rate; the cheaper one is highlighted. Spot/marketplace tiers shown on the individual pages.
FAQ
RTX 4090 is cheaper: the L40S rents from $0.96 per GPU-hour and the RTX 4090 from $0.35 on-demand, checked 13 October 2026.
The largest recorded L40S variant has 48 GB and the largest RTX 4090 variant has 24 GB. Other variants may have less memory. The L40S has more.
Compare more rental options: the screener · price movers · methodology.