The L40S is newer and has 2x the memory, while the RTX 3090 has 8% more bandwidth. The RTX 3090 is typically cheaper.
At a glance
Memory
2x more on L40S
- L40S
- 48 GB
- RTX 3090
- 24 GB
Memory bandwidth
8% higher on RTX 3090
- L40S
- 864 GB/s
- RTX 3090
- 936 GB/s
Cheapest on-demand
74% cheaper on RTX 3090
- L40S
- $0.38 /GPU/hr
- RTX 3090
- $0.10 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | L40S | RTX 3090 | Difference |
|---|---|---|---|
| On-demand | $1.54 /GPU/hr from $0.38 | $0.20 /GPU/hr from $0.10 | 87% cheaper on RTX 3090 |
| Reserved | $1.10 /GPU/hr from $0.49 (6 mo) | -- /GPU/hr from $0.06 (1 mo) | |
| Spot | $0.98 /GPU/hr from $0.33 | -- /GPU/hr from $0.08 |
Heads up: A provider's own page may quote a different figure, for example on tax, region or a promotion. A monthly-only plan shows a derived hourly rate. Medians are across providers, one vote each, so a large catalog does not outweigh a small one. No median for reserved and spot on the RTX 3090: we only show one when at least 3 providers list the GPU on that billing type. Verify before provisioning. More on how we price.
Price history
L40S vs RTX 3090 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | L40S | RTX 3090 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 48 GB GDDR6 | 24 GB GDDR6X | 2x more on L40S |
| Bandwidth | 864 GB/s | 936 GB/s | 8% higher on RTX 3090 |
| Bus width | 384-bit | 384-bit | Identical |
| Compute · dense | |||
| FP8 | 733 TFLOPS | Not supported | L40S only |
| FP16 / BF16 | 362.1 TFLOPS | 71.2 TFLOPS | 5.1x higher on L40S |
| INT8 | 733 TOPS | 284.7 TOPS | 2.6x higher on L40S |
| FP32 | 91.6 TFLOPS | 35.6 TFLOPS | 2.6x higher on L40S |
| Platform | |||
| Interconnect | PCIe only | NVLink 112 GB/s | NVLink on RTX 3090 only |
| Board power | 350 W | 350 W | Identical |
| Released | Q3 2023 | Q3 2020 | 3 years newer on L40S |
| Precision | |||
| Supported formats | FP8FP16BF16TF32FP32INT4INT8 | FP16BF16TF32FP32INT4INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: L40S datasheet and RTX 3090 datasheet.
Where to rent them
Providers that rent these GPUs, with each one's cheapest rate. Providers that rent both are listed first.
| Provider | L40S | RTX 3090 |
|---|---|---|
Lium
Distributed
|
$0.38 /GPU/hr On-demand PCIe | $0.16 /GPU/hr On-demand |
Vast.ai
USA
|
$0.54 /GPU/hr On-demand | $0.14 /GPU/hr On-demand |
GPU.ai
UAE
|
$0.79 /GPU/hr On-demand | $0.15 /GPU/hr On-demand |
Runpod
USA
|
$0.79 /GPU/hr On-demand | $0.22 /GPU/hr On-demand |
Novita
USA
|
$0.55 /GPU/hr On-demand | -- |
EmpirioLabs AI
USA
|
$0.80 /GPU/hr On-demand | -- |
Packet·ai
USA
|
$0.92 /GPU/hr On-demand | -- |
Sesterce
France
|
$0.97 /GPU/hr On-demand | -- |
HyperAI
Hong Kong
|
-- | $0.10 /GPU/hr On-demand |
Salad
Distributed
|
-- | $0.17 /GPU/hr On-demand |
Theta EdgeCloud
Distributed
|
-- | $0.22 /GPU/hr On-demand |
SwissGPU
Switzerland
|
-- | $0.30 /GPU/hr On-demand |
40 providers list the L40S and 10 the RTX 3090. Every listing is on the L40S page and the RTX 3090 page.
Similar GPUs
Other comparisons in the same class.
-
Nvidia H100
80 GB HBM3 · 3.9x the bandwidth of the L40S
From $1.30 /GPU/hr Compare -
Nvidia A100
80 GB HBM2e · 2.2x the bandwidth of the L40S
From $0.34 /GPU/hr Compare
-
Nvidia L40
48 GB GDDR6 · released Q4 2022
From $0.46 /GPU/hr Compare
-
Nvidia RTX 5090
32 GB GDDR7 · 91% more bandwidth than the RTX 3090
From $0.35 /GPU/hr Compare
-
Nvidia RTX 4090
24 GB GDDR6X · PCIe only
From $0.33 /GPU/hr Compare
Our data for Nvidia L40S was last updated on Sept. 14, 2026, and for Nvidia RTX 3090 on Sept. 14, 2026.