The A100 has 3.3x the memory and 2.1x the bandwidth. The RTX 3090 is typically cheaper.
At a glance
Memory
3.3x more on A100
- A100
- 80 GB
- RTX 3090
- 24 GB
Memory bandwidth
2.1x higher on A100
- A100
- 1,935 GB/s
- RTX 3090
- 936 GB/s
Cheapest on-demand
63% cheaper on RTX 3090
- A100
- $0.27 /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 | A100 | RTX 3090 | Difference |
|---|---|---|---|
| On-demand | $1.80 /GPU/hr from $0.27 | $0.22 /GPU/hr from $0.10 | 88% cheaper on RTX 3090 |
| Reserved | $1.60 /GPU/hr from $0.53 (1 mo) | -- /GPU/hr from $0.06 (1 mo) | |
| Spot | $0.85 /GPU/hr from $0.14 | -- /GPU/hr from $0.05 |
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
A100 vs RTX 3090 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | A100 | RTX 3090 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 80 GB HBM2e 40 GB on SXM, PCIe | 24 GB GDDR6X | 3.3x more on A100 |
| Bandwidth | 1,935 GB/s 2,039 GB/s on SXM 1,555 GB/s on SXM, PCIe | 936 GB/s | 2.1x higher on A100 |
| Bus width | 5,120-bit | 384-bit | 13x wider on A100 |
| Compute · dense | |||
| FP16 / BF16 | 312 TFLOPS | 71.2 TFLOPS | 4.4x higher on A100 |
| INT8 | 624 TOPS | 284.7 TOPS | 2.2x higher on A100 |
| FP32 | 19.5 TFLOPS | 35.6 TFLOPS | 83% higher on RTX 3090 |
| FP64 | 9.7 TFLOPS | Not supported | A100 only |
| Platform | |||
| Interconnect | NVLink 600 GB/s | NVLink 112 GB/s | 5.4x higher on A100 |
| Board power | 300 W | 350 W | 17% higher on RTX 3090 |
| Released | Q2 2020 | Q3 2020 | |
| Precision | |||
| Supported formats | FP16BF16TF32FP32FP64INT4INT8 | FP16BF16TF32FP32INT4INT8 | |
Figures are for each model's headline configuration. Where a form factor carries a different number, it is named under the figure.
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: A100 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 | A100 | RTX 3090 |
|---|---|---|
Vast.ai
USA
|
$0.27 /GPU/hr On-demand SXM | $0.13 /GPU/hr On-demand |
GPU.ai
UAE
|
$0.41 /GPU/hr On-demand | $0.14 /GPU/hr On-demand |
Runpod
USA
|
$1.00 /GPU/hr On-demand SXM | $0.22 /GPU/hr On-demand |
Lium
Distributed
|
$1.15 /GPU/hr On-demand SXM | $0.16 /GPU/hr On-demand |
Jarvislabs
India
|
$0.89 /GPU/hr On-demand | -- |
Thunder Compute
USA
|
$1.09 /GPU/hr On-demand | -- |
Massed Compute
USA
|
$1.35 /GPU/hr On-demand | -- |
Hyperstack
UK
|
$1.40 /GPU/hr On-demand PCIe | -- |
HyperAI
Hong Kong
|
-- | $0.10 /GPU/hr On-demand |
Salad
Distributed
|
-- | $0.17 /GPU/hr On-demand |
Theta EdgeCloud
Distributed
|
-- | $0.30 /GPU/hr On-demand |
SwissGPU
Switzerland
|
-- | $0.30 /GPU/hr On-demand |
48 providers list the A100 and 10 the RTX 3090. Every listing is on the A100 page and the RTX 3090 page.
Similar GPUs
Other comparisons in the same class.
-
Nvidia H100
80 GB HBM3 · 73% more bandwidth than the A100
From $1.30 /GPU/hr Compare -
Nvidia RTX 5090
32 GB GDDR7 · PCIe only
From $0.35 /GPU/hr Compare
-
Nvidia RTX 4090
24 GB GDDR6X · 48% less bandwidth than the A100
From $0.33 /GPU/hr Compare
Our data for Nvidia A100 was last updated on Sept. 14, 2026, and for Nvidia RTX 3090 on Sept. 14, 2026.