The RTX 4090 is newer, with 50% more memory and 2.3x the bandwidth.
At a glance
Memory
50% more on RTX 4090
- A4000
- 16 GB
- RTX 4090
- 24 GB
Memory bandwidth
2.3x higher on RTX 4090
- A4000
- 448 GB/s
- RTX 4090
- 1,010 GB/s
Cheapest on-demand
68% cheaper on A4000
- A4000
- $0.10 /GPU/hr
- RTX 4090
- $0.33 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | A4000 | RTX 4090 | Difference |
|---|---|---|---|
| On-demand | $0.48 /GPU/hr from $0.10 | $0.46 /GPU/hr from $0.33 | 5% cheaper on RTX 4090 |
| Reserved | $0.18 /GPU/hr from $0.07 (24 mo) | $0.52 /GPU/hr from $0.31 (1 mo) | 65% cheaper on A4000 |
| Spot | -- /GPU/hr from $0.05 | $0.31 /GPU/hr from $0.13 |
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 spot on the A4000: 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
A4000 vs RTX 4090 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | A4000 | RTX 4090 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 16 GB GDDR6 | 24 GB GDDR6X | 50% more on RTX 4090 |
| Bandwidth | 448 GB/s | 1,010 GB/s | 2.3x higher on RTX 4090 |
| Bus width | 256-bit | 384-bit | 50% wider on RTX 4090 |
| Compute · dense | |||
| FP8 | Not supported | 330.3 TFLOPS | RTX 4090 only |
| FP16 / BF16 | 76.7 TFLOPS | 165.2 TFLOPS | 2.2x higher on RTX 4090 |
| INT8 | 660.6 TOPS | ||
| FP32 | 19.2 TFLOPS | 82.6 TFLOPS | 4.3x higher on RTX 4090 |
| Platform | |||
| Interconnect | PCIe only | PCIe only | |
| Board power | 140 W | 450 W | 3.2x higher on RTX 4090 |
| Released | Q2 2021 | Q4 2022 | 2 years newer on RTX 4090 |
| Precision | |||
| Supported formats | FP16BF16TF32FP32INT4INT8 | FP8FP16BF16TF32FP32INT4INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: A4000 datasheet and RTX 4090 datasheet.
Where to rent them
Providers that rent these GPUs, with each one's cheapest rate. Providers that rent both are listed first.
| Provider | A4000 | RTX 4090 |
|---|---|---|
Vast.ai
USA
|
$0.10 /GPU/hr On-demand | $0.38 /GPU/hr On-demand |
Runcrate
USA
|
$0.88 /GPU/hr On-demand PCIe | $0.44 /GPU/hr On-demand PCIe |
Sesterce
France
|
$0.88 /GPU/hr On-demand | $0.44 /GPU/hr On-demand |
Hyperstack
UK
|
$0.15 /GPU/hr On-demand | -- |
TensorDock
Distributed
|
$0.21 /GPU/hr On-demand | -- |
Paperspace
USA
|
$0.76 /GPU/hr On-demand | -- |
Database Mart
USA
|
$0.17 /GPU/hr Reserved | -- |
Cirrascale
USA
|
$0.28 /GPU/hr Reserved | -- |
Packet·ai
USA
|
-- | $0.39 /GPU/hr On-demand |
Lium
Distributed
|
-- | $0.58 /GPU/hr On-demand |
GPU.ai
UAE
|
-- | $0.74 /GPU/hr On-demand |
Runpod
USA
|
-- | $0.74 /GPU/hr On-demand |
Daytona
USA
|
-- | $0.99 /GPU/hr On-demand |
12 providers list the A4000 and 19 the RTX 4090. Every listing is on the A4000 page and the RTX 4090 page.
Similar GPUs
Other comparisons in the same class.
-
Nvidia T4
16 GB GDDR6 · 33% less bandwidth than the A4000
From $0.14 /GPU/hr Compare -
Nvidia RTX 4000 Ada
20 GB GDDR6 · 20% less bandwidth than the A4000
From $0.20 /GPU/hr Compare
-
Nvidia A5000
24 GB GDDR6 · 71% more bandwidth than the A4000
From $0.23 /GPU/hr Compare
-
Nvidia RTX 5090
32 GB GDDR7 · 77% more bandwidth than the RTX 4090
From $0.35 /GPU/hr Compare
-
Nvidia L40S
48 GB GDDR6 · 14% less bandwidth than the RTX 4090
From $0.55 /GPU/hr Compare
Our data for Nvidia A4000 was last updated on Sept. 14, 2026, and for Nvidia RTX 4090 on Sept. 14, 2026.