RTX 3090 vs RTX 4090
RTX 3090 starts at $0.20/GPU-hour on-demand; RTX 4090 starts at $0.35/GPU-hour on-demand. Compare the exact variants, memory and published specifications below. Peak compute figures do not establish application speed.
42.9% cheaper at RTX 3090.
updated 2026-10-06. Price alone does not establish equivalent capacity or performance.
RTX 3090
RTX 4090
Spec sheet
| RTX 3090 | RTX 4090 | |
|---|---|---|
| Spec variant | RTX 3090 | RTX 4090 |
| Architecture | Ampere | Ada Lovelace |
| VRAM (spec variant) | 24 GB | 24 GB |
| FP16 TFLOPS (dense) | 142 | 165 |
| Memory bandwidth | 936 GB/s | 1008 GB/s |
| TDP | 350 W | 450 W |
| Interconnect | PCIe Gen4 | PCIe Gen4 |
| Launched | 2020 | 2022 |
Rental price per manufacturer-rated FP16 compute: RTX 3090 $1.41 per PFLOP-hour vs RTX 4090 $2.12. Formula: cheapest $/hr ÷ dense FP16 PFLOPS (1 PFLOP = 1000 TFLOPS). This uses RTX 3090 and RTX 4090, whose datasheets may differ from the variants above. It is not measured job throughput. Specs: RTX 3090 manufacturer, RTX 4090 manufacturer.
What they cost to rent (2026-10-06)
| RTX 3090 | RTX 4090 | |
|---|---|---|
| Cheapest on-demand $/hr | $0.20 | $0.35 |
| Cheapest spot/community $/hr | $0.09 | $0.16 |
| Cheapest source | TensorDock | TensorDock |
| Providers offering it | 3 | 5 |
Lowest recorded on-demand rate per configuration; highlighted = cheaper. Spot/marketplace tiers shown on the individual pages.
FAQ
RTX 3090 is cheaper: the RTX 3090 rents from $0.20 per GPU-hour and the RTX 4090 from $0.35 on-demand, updated 2026-10-06.
The largest recorded RTX 3090 variant has 24 GB and the largest RTX 4090 variant has 24 GB. Other variants may have less memory. They match on maximum VRAM.
Compare more rental options: the screener · price movers · methodology.