The A800 is newer, with 67% more memory and 66% more bandwidth. The RTX 3090 is cheaper right now.
At a glance
Memory
67% more on A800
- A800
- 40 GB
- RTX 3090
- 24 GB
Memory bandwidth
66% higher on A800
- A800
- 1,555 GB/s
- RTX 3090
- 936 GB/s
Cheapest on-demand
92% cheaper on RTX 3090
- A800
- $1.18 /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 | A800 | RTX 3090 | Difference |
|---|---|---|---|
| On-demand | -- /GPU/hr from $1.18 | $0.20 /GPU/hr from $0.10 | |
| Reserved | No reserved listings | -- /GPU/hr from $0.06 (1 mo) | |
| Spot | No spot listings | -- /GPU/hr from $0.07 |
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 on-demand on the A800 and 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
A800 vs RTX 3090 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | A800 | RTX 3090 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 40 GB HBM2 | 24 GB GDDR6X | 67% more on A800 |
| Bandwidth | 1,555 GB/s | 936 GB/s | 66% higher on A800 |
| Bus width | 5,120-bit | 384-bit | 13x wider on A800 |
| Compute · dense | |||
| FP16 / BF16 | 312 TFLOPS | 71.2 TFLOPS | 4.4x higher on A800 |
| INT8 | 623.5 TOPS | 284.7 TOPS | 2.2x higher on A800 |
| FP32 | 19.5 TFLOPS | 35.6 TFLOPS | 83% higher on RTX 3090 |
| FP64 | 9.7 TFLOPS | Not supported | A800 only |
| Platform | |||
| Interconnect | NVLink 400 GB/s | NVLink 112 GB/s | 3.6x higher on A800 |
| Board power | 240 W | 350 W | 46% higher on RTX 3090 |
| Released | Q4 2022 | Q3 2020 | 2 years newer on A800 |
| 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: A800 datasheet and RTX 3090 datasheet.
Where to rent them
Providers that rent these GPUs, with each one's cheapest rate. No provider we track offers both right now.
| Provider | A800 | RTX 3090 |
|---|---|---|
GPUhub
Singapore
|
$1.18 /GPU/hr On-demand NVL | -- |
HyperAI
Hong Kong
|
-- | $0.10 /GPU/hr On-demand |
Vast.ai
USA
|
-- | $0.12 /GPU/hr On-demand |
GPU.ai
UAE
|
-- | $0.15 /GPU/hr On-demand |
Salad
Distributed
|
-- | $0.17 /GPU/hr On-demand |
Runpod
USA
|
-- | $0.22 /GPU/hr On-demand |
SwissGPU
Switzerland
|
-- | $0.30 /GPU/hr On-demand |
TensorDock
Distributed
|
-- | $0.31 /GPU/hr On-demand |
EmpirioLabs AI
USA
|
-- | $0.40 /GPU/hr On-demand |
Similar GPUs
Other comparisons in the same class.
-
Nvidia H100
80 GB HBM3 · 2.2x the bandwidth of the A800
From $1.73 /GPU/hr Compare -
Nvidia A100
80 GB HBM2e · 24% more bandwidth than the A800
From $0.40 /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 A800 was last updated on Sept. 14, 2026, and for Nvidia RTX 3090 on Sept. 14, 2026.