The RTX 4090 is newer, with 3x the memory and 5.3x the bandwidth, and is cheaper right now.
At a glance
Memory
3x more on RTX 4090
- P4
- 8 GB
- RTX 4090
- 24 GB
Memory bandwidth
5.3x higher on RTX 4090
- P4
- 192 GB/s
- RTX 4090
- 1,010 GB/s
Cheapest on-demand
50% cheaper on RTX 4090
- P4
- $0.65 /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 | P4 | RTX 4090 | Difference |
|---|---|---|---|
| On-demand | -- /GPU/hr from $0.65 | $0.48 /GPU/hr from $0.33 | |
| Reserved | -- /GPU/hr from $0.34 (36 mo) | $0.52 /GPU/hr from $0.29 (1 mo) | |
| Spot | -- /GPU/hr from $0.11 | $0.33 /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. No median for on-demand, reserved and spot on the P4: 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
P4 vs RTX 4090 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | P4 | RTX 4090 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 8 GB GDDR5 | 24 GB GDDR6X | 3x more on RTX 4090 |
| Bandwidth | 192 GB/s | 1,010 GB/s | 5.3x 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 | 165.2 TFLOPS | ||
| INT8 | 22 TOPS | 660.6 TOPS | 30x higher on RTX 4090 |
| FP32 | 5.5 TFLOPS | 82.6 TFLOPS | 15x higher on RTX 4090 |
| Platform | |||
| Interconnect | PCIe only | PCIe only | |
| Board power | 75 W | 450 W | 6x higher on RTX 4090 |
| Released | Q3 2016 | Q4 2022 | 6 years newer on RTX 4090 |
| Precision | |||
| Supported formats | FP16FP32INT8 | FP8FP16BF16TF32FP32INT4INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: P4 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 | P4 | RTX 4090 |
|---|---|---|
Google Cloud
USA
|
$0.65 /GPU/hr On-demand | -- |
Vast.ai
USA
|
-- | $0.34 /GPU/hr On-demand |
GPU.ai
UAE
|
-- | $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
|
-- | $0.58 /GPU/hr On-demand |
Oblivus
USA
|
-- | $0.64 /GPU/hr On-demand PCIe |
Sesterce
France
|
-- | $0.66 /GPU/hr On-demand |
1 provider list the P4 and 21 the RTX 4090. Every listing is on the P4 page and the RTX 4090 page.
Similar GPUs
Other comparisons in the same class.
-
Nvidia L4
24 GB GDDR6 · 56% more bandwidth than the P4
From $0.32 /GPU/hr Compare -
Nvidia T4
16 GB GDDR6 · 56% more bandwidth than the P4
From $0.15 /GPU/hr Compare
-
Nvidia P40
24 GB GDDR5 · 80% more bandwidth than the P4
From $0.11 /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 P4 was last updated on Sept. 14, 2026, and for Nvidia RTX 4090 on Sept. 14, 2026.