AMD MI455X
vs
Nvidia GTX 1660 Super
The MI455X is newer, with 72x the memory and 69x the bandwidth.
At a glance
Memory
72x more on MI455X
- MI455X
- 432 GB
- GTX 1660 Super
- 6 GB
Memory bandwidth
69x higher on MI455X
- MI455X
- 23,300 GB/s
- GTX 1660 Super
- 336 GB/s
Cheapest on-demand
MI455X is not sold on demand
- MI455X
- --
- GTX 1660 Super
- $0.04 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | MI455X | GTX 1660 Super | Difference |
|---|---|---|---|
| On-demand | No on-demand listings | $0.04 /GPU/hr from $0.04 | |
| Reserved | No reserved listings | -- /GPU/hr from $0.06 (1 mo) | |
| Spot | No spot listings | -- /GPU/hr from $0.02 |
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 GTX 1660 Super: 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
MI455X vs GTX 1660 Super price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | MI455X | GTX 1660 Super | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 432 GB HBM4 | 6 GB GDDR6 | 72x more on MI455X |
| Bandwidth | 23,300 GB/s | 336 GB/s | 69x higher on MI455X |
| Bus width | 192-bit | ||
| Compute · dense | |||
| FP4 | 40,265 TFLOPS | Not supported | MI455X only |
| FP8 | 20,133 TFLOPS | Not supported | MI455X only |
| FP16 / BF16 | 5,033 TFLOPS | 10.1 TFLOPS | 501x higher on MI455X |
| INT8 | 5,033 TOPS | Not supported | MI455X only |
| FP32 | 315 TFLOPS | 5.0 TFLOPS | 63x higher on MI455X |
| Platform | |||
| Interconnect | Infinity Fabric 3,600 GB/s | PCIe only | Infinity Fabric on MI455X only |
| Released | Q3 2026 | Q4 2019 | 7 years newer on MI455X |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16FP32INT8 | FP16FP32 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: MI455X datasheet and GTX 1660 Super 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 | MI455X | GTX 1660 Super |
|---|---|---|
Azure
USA
|
On request Custom | -- |
Cirrascale
USA
|
On request Custom | -- |
Oracle Cloud
USA
|
On request Custom | -- |
TensorWave
USA
|
On request Custom | -- |
Vultr
USA
|
On request Custom | -- |
Salad
Distributed
|
-- | $0.0400 /GPU/hr On-demand |
Vast.ai
USA
|
-- | $0.0403 /GPU/hr On-demand |
Theta EdgeCloud
Distributed
|
-- | $0.05 /GPU/hr On-demand |
Similar GPUs
Other comparisons in the same class.
-
Nvidia B300
288 GB HBM3e · 66% less bandwidth than the MI455X
From $4.99 /GPU/hr Compare
-
AMD MI355X
288 GB HBM3e · 66% less bandwidth than the MI455X
From $5.99 /GPU/hr Compare
-
Nvidia GB300
288 GB HBM3e · 66% less bandwidth than the MI455X
From $18.00 /GPU/hr Compare
-
Nvidia RTX 3060
12 GB GDDR6 · released Q1 2021
From $0.05 /GPU/hr Compare
-
Nvidia RTX 2060
6 GB GDDR6 · released Q1 2019
From $0.05 /GPU/hr Compare
Our data for AMD MI455X was last updated on Sept. 14, 2026, and for Nvidia GTX 1660 Super on Sept. 14, 2026.