AMD MI325X
vs
Nvidia RTX 4090
The MI325X is newer, with 11x the memory and 5.9x the bandwidth. The RTX 4090 is typically cheaper.
At a glance
Memory
11x more on MI325X
- MI325X
- 256 GB
- RTX 4090
- 24 GB
Memory bandwidth
5.9x higher on MI325X
- MI325X
- 6.00 TB/s
- RTX 4090
- 1.01 TB/s
Cheapest on-demand
86% cheaper on RTX 4090
- MI325X
- $2.25 /GPU/hr
- RTX 4090
- $0.32 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | MI325X | RTX 4090 | Difference |
|---|---|---|---|
| On-demand | $3.06 /GPU/hr from $2.25 | $0.44 /GPU/hr from $0.32 | 86% cheaper on RTX 4090 |
| Reserved | $1.95 /GPU/hr from $1.48 (12 mo) | $0.52 /GPU/hr from $0.28 (3 mo) | 74% cheaper on RTX 4090 |
| Spot | Sold out | $0.34 /GPU/hr from $0.16 |
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. Verify before provisioning. More on how we price.
Price history
MI325X vs RTX 4090 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | MI325X | RTX 4090 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 256 GB HBM3e | 24 GB GDDR6X | 11x more on MI325X |
| Bandwidth | 6,000 GB/s | 1,010 GB/s | 5.9x higher on MI325X |
| Bus width | 8,192-bit | 384-bit | 21x wider on MI325X |
| Compute · dense | |||
| FP8 | 2,614.9 TFLOPS | 330.3 TFLOPS | 7.9x higher on MI325X |
| FP16 / BF16 | 1,307.4 TFLOPS | 165.2 TFLOPS | 7.9x higher on MI325X |
| INT8 | 2,614.9 TOPS | 660.6 TOPS | 4x higher on MI325X |
| FP32 | 163.4 TFLOPS | 82.6 TFLOPS | 98% higher on MI325X |
| FP64 | 81.7 TFLOPS | Not supported | MI325X only |
| Platform | |||
| Interconnect | Infinity Fabric 896 GB/s | PCIe only | Infinity Fabric on MI325X only |
| Board power | 1,000 W | 450 W | 2.2x higher on MI325X |
| Released | Q4 2024 | Q4 2022 | 2 years newer on MI325X |
| Precision | |||
| Supported formats | FP8FP16BF16TF32FP32FP64INT8 | FP8FP16BF16TF32FP32INT4INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: MI325X datasheet and RTX 4090 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 | MI325X | RTX 4090 |
|---|---|---|
Bentaus
USA
|
$2.25 /GPU/hr On-demand | -- |
Cyfuture AI
India
|
$3.01 /GPU/hr On-demand | -- |
DigitalOcean
USA
|
$3.80 /GPU/hr On-demand | -- |
TensorWave
USA
|
$2.25 /GPU/hr Custom OAM | -- |
Vultr
USA
|
$2.00 /GPU/hr Spot | -- |
GPU.ai
UAE
|
-- | $0.32 /GPU/hr On-demand |
Vast.ai
USA
|
-- | $0.34 /GPU/hr On-demand |
Runpod
USA
|
-- | $0.34 /GPU/hr On-demand |
Packet·ai
USA
|
-- | $0.39 /GPU/hr On-demand |
GPUhub
Singapore
|
-- | $0.44 /GPU/hr On-demand |
Lium
Distributed
|
-- | $0.79 /GPU/hr On-demand |
Daytona
USA
|
-- | $0.99 /GPU/hr On-demand |
EmpirioLabs AI
USA
|
-- | $1.60 /GPU/hr On-demand |
5 providers list the MI325X and 19 the RTX 4090. Every listing is on the MI325X page and the RTX 4090 page.
Similar GPUs
Other comparisons in the same class.
-
Nvidia H100
80 GB HBM3 · 44% less bandwidth than the MI325X
From $1.73 /GPU/hr Compare
-
Nvidia B200
180 GB HBM3e · 28% more bandwidth than the MI325X
From $3.75 /GPU/hr Compare
-
Nvidia H200
141 GB HBM3e · 20% less bandwidth than the MI325X
From $2.09 /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 $0.38 /GPU/hr Compare
Our data for AMD MI325X was last updated on Sept. 14, 2026, and for Nvidia RTX 4090 on Sept. 14, 2026.