RTX 4090 vs RTX 5000 Ada: Specs, VRAM & Price
Short answer: choose the RTX 5000 Ada when 32 GB of VRAM is the gating requirement. Choose the RTX 4090 when 24 GB is enough for the workload and the lower hourly rate points that way.
The RTX 4090 has 24 GB of VRAM; the RTX 5000 Ada has 32 GB.
You can rent both by the hour, no purchase required. RTX 4090 from $0.374/GPU/hr; RTX 5000 Ada from $0.539/GPU/hr. The RTX 4090 is 31% cheaper at the entry rate.
RTX 4090
Good for inference and light fine-tuning workloads
RTX 5000 Ada
Good for inference and light fine-tuning workloads
Last updated: 2026-10-10 21:24:21 UTCRefreshes hourly
Specs side by side
| Spec | RTX 4090 | RTX 5000 Ada |
|---|---|---|
| VRAM | 24 GB | 32 GB |
| Memory bandwidth | 1,008 GB/s | – |
| Architecture | Ada Lovelace | Ada Lovelace |
| Compute capability | 8.9 | 8.9 |
| Precisions in hardware | FP32, FP16, BF16, FP8, INT4 | FP32, FP16, BF16, FP8, INT4 |
| Max board power (TDP) | 450W | – |
| Form factor | PCIe 4.0 x16 | – |
| Regions | 3 | 1 |
On-demand price
| Rate | RTX 4090 | RTX 5000 Ada |
|---|---|---|
| Lowest per GPU/hr | $0.761/GPU/hr | $0.539/GPU/hr (cheapest overall) |
Which is better for AI: RTX 4090 or RTX 5000 Ada?
Choose the RTX 5000 Ada when 32 GB of VRAM is the gating requirement. Choose the RTX 4090 when 24 GB is enough for the workload and the lower hourly rate points that way.
RTX 4090 vs RTX 5000 Ada: common questions
Is the RTX 4090 or the RTX 5000 Ada better for AI?
Short answer: choose the RTX 5000 Ada when 32 GB of VRAM is the gating requirement. Choose the RTX 4090 when 24 GB is enough for the workload and the lower hourly rate points that way.
Is the RTX 4090 or the RTX 5000 Ada cheaper to rent?
On Aquanode's live marketplace the RTX 4090 starts at $0.374/GPU/hr (median $0.756/GPU/hr) and the RTX 5000 Ada starts at $0.539/GPU/hr (median $0.539/GPU/hr). The RTX 4090 is the cheaper of the two at the entry rate, by 31%.
What is the difference between the RTX 4090 and the RTX 5000 Ada?
The RTX 4090 has 24 GB of VRAM against the RTX 5000 Ada's 32 GB; both are Ada Lovelace parts; both run BF16, FP8, INT4 workloads in hardware. On price, the RTX 4090 lists from $0.374/GPU/hr and the RTX 5000 Ada from $0.539/GPU/hr.
How widely available are the RTX 4090 and the RTX 5000 Ada?
The RTX 4090 is listed in 3 regions and the RTX 5000 Ada in 1 region right now.
How much does 1,000 GPU-hours cost on the RTX 4090 vs the RTX 5000 Ada?
At the lowest rates listed today, 1,000 GPU-hours costs $374 on the RTX 4090 and $539 on the RTX 5000 Ada, a difference of $165 for the same runtime. Rates are per GPU per hour and update hourly.
How much VRAM does the RTX 4090 have compared to the RTX 5000 Ada?
The RTX 4090 has 24 GB of VRAM; the RTX 5000 Ada has 32 GB.
How this comparison is calculated
Every price is normalized to a per-GPU hourly rate using the same pipeline as every other pricing surface on Aquanode, and only the cheapest qualifying offer per provider is shown. A dash means that provider does not currently list that GPU.
Architecture, compute capability and supported precisions come from each vendor's published datasheet for that generation, not from the marketplace feed. This page regenerates at most once per hour.
Memory bandwidth, tensor TFLOPS, NVLink/interconnect and max board power are the same verified-from-datasheet figures shown on each model's own RTX 4090 page and RTX 5000 Ada page, which link the primary vendor source for that model. A dash here means Aquanode hasn't verified that figure from a primary source yet, never a guess.
Go further
Check what fits in each card's memory with the RTX 4090 VRAM calculator and the RTX 5000 Ada VRAM calculator, or browse every model by generation in the GPU index.
More RTX 4090 comparisons
More RTX 5000 Ada comparisons
Related reading: RTX 4090 pricing and specs, RTX 4090 for AI, RTX 5090 vs RTX 4090, and The best GPUs for AI, ranked.
