The A40 is newer, with 4x the memory and 2.9x the bandwidth, and is cheaper right now.
At a glance
Memory
4x more on A40
- A40
- 48 GB
- K80
- 12 GB
Memory bandwidth
2.9x higher on A40
- A40
- 696 GB/s
- K80
- 240 GB/s
Cheapest on-demand
55% cheaper on A40
- A40
- $0.40 /GPU/hr
- K80
- $0.90 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | A40 | K80 | Difference |
|---|---|---|---|
| On-demand | $0.85 /GPU/hr from $0.40 | -- /GPU/hr from $0.90 | |
| Reserved | -- /GPU/hr from $0.61 (24 mo) | -- /GPU/hr from $0.04 (24 mo) | |
| Spot | -- /GPU/hr from $0.27 | No spot listings |
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 A40 and on-demand and reserved on the K80: 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
A40 vs K80 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | A40 | K80 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 48 GB GDDR6 | 12 GB GDDR5 | 4x more on A40 |
| Bandwidth | 696 GB/s | 240 GB/s | 2.9x higher on A40 |
| Bus width | 384-bit | 384-bit | Identical |
| Compute · dense | |||
| FP16 / BF16 | 149.7 TFLOPS | Not supported | A40 only |
| INT8 | 299.3 TOPS | Not supported | A40 only |
| FP32 | 37.4 TFLOPS | 4.4 TFLOPS | 8.6x higher on A40 |
| FP64 | Not supported | 1.5 TFLOPS | K80 only |
| Platform | |||
| Interconnect | PCIe only | PCIe only | |
| Board power | 300 W | 150 W | 2x higher on A40 |
| Released | Q4 2020 | Q4 2014 | 6 years newer on A40 |
| Precision | |||
| Supported formats | FP16BF16TF32FP32INT4INT8 | FP32FP64 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: A40 datasheet and K80 datasheet.
Where to rent them
Providers that rent these GPUs, with each one's cheapest rate. Providers that rent both are listed first.
| Provider | A40 | K80 |
|---|---|---|
Database Mart
USA
|
$0.61 /GPU/hr Reserved | $0.0447 /GPU/hr Reserved |
Vast.ai
USA
|
$0.40 /GPU/hr On-demand | -- |
GPU.ai
UAE
|
$0.40 /GPU/hr On-demand | -- |
Sesterce
France
|
$2.05 /GPU/hr On-demand | -- |
Runcrate
USA
|
$2.42 /GPU/hr On-demand PCIe | -- |
Denvr
Canada
|
$0.65 /GPU/hr On-demand | -- |
Exoscale
Switzerland
|
$1.05 /GPU/hr On-demand | -- |
Runpod
USA
|
On request Reserved | -- |
AWS
USA
|
-- | $0.90 /GPU/hr On-demand |
9 providers list the A40 and 2 the K80. Every listing is on the A40 page and the K80 page.
Similar GPUs
Other comparisons in the same class.
-
Nvidia RTX 6000 Ada
48 GB GDDR6 · 38% more bandwidth than the A40
From $0.48 /GPU/hr Compare -
Nvidia L40
48 GB GDDR6 · 24% more bandwidth than the A40
From $0.46 /GPU/hr Compare
-
Nvidia A5000
24 GB GDDR6 · NVLink 112 GB/s
From $0.16 /GPU/hr Compare
-
Nvidia V100
32 GB HBM2 · 3.8x the bandwidth of the K80
From $0.09 /GPU/hr Compare
-
Nvidia T4
16 GB GDDR6 · 25% more bandwidth than the K80
From $0.10 /GPU/hr Compare
Our data for Nvidia A40 was last updated on Sept. 14, 2026, and for Nvidia K80 on Sept. 14, 2026.