RTX 6000 Ada vs RTX A4000: Specs, VRAM & Price
Short answer: choose the RTX 6000 Ada when 48 GB of VRAM is the gating requirement. Choose the RTX A4000 when 16 GB is enough for the workload and the lower hourly rate points that way.
The RTX 6000 Ada has 48 GB of VRAM; the RTX A4000 has 16 GB.
You can rent both by the hour, no purchase required. RTX 6000 Ada from $0.814/GPU/hr; RTX A4000 from $0.167/GPU/hr. The RTX A4000 is 80% cheaper at the entry rate.
RTX 6000 Ada
Good for fine-tuning mid-size models and high-throughput inference
RTX A4000
Good for inference and small-scale training workloads
Last updated: 2026-10-10 22:51:25 UTCRefreshes hourly
Specs side by side
| Spec | RTX 6000 Ada | RTX A4000 |
|---|---|---|
| VRAM | 48 GB | 16 GB |
| Memory bandwidth | 960 GB/s | 448 GB/s |
| Architecture | Ada Lovelace | Ampere |
| Compute capability | 8.9 | 8.6 |
| Precisions in hardware | FP32, FP16, BF16, FP8, INT4 | FP32, FP16, BF16, INT4 |
| Max board power (TDP) | 300W | 140W |
| Regions | 3 | 2 |
On-demand price
| Rate | RTX 6000 Ada | RTX A4000 |
|---|---|---|
| Lowest per GPU/hr | $0.869/GPU/hr | $0.167/GPU/hr |
Which is better for AI: RTX 6000 Ada or RTX A4000?
Choose the RTX 6000 Ada when 48 GB of VRAM is the gating requirement. Choose the RTX A4000 when 16 GB is enough for the workload and the lower hourly rate points that way.
RTX 6000 Ada vs RTX A4000: common questions
Is the RTX 6000 Ada or the RTX A4000 better for AI?
Short answer: choose the RTX 6000 Ada when 48 GB of VRAM is the gating requirement. Choose the RTX A4000 when 16 GB is enough for the workload and the lower hourly rate points that way.
Is the RTX 6000 Ada or the RTX A4000 cheaper to rent?
On Aquanode's live marketplace the RTX 6000 Ada starts at $0.814/GPU/hr (median $0.869/GPU/hr) and the RTX A4000 starts at $0.167/GPU/hr (median $0.187/GPU/hr). The RTX A4000 is the cheaper of the two at the entry rate, by 80%.
What is the difference between the RTX 6000 Ada and the RTX A4000?
The RTX 6000 Ada has 48 GB of VRAM against the RTX A4000's 16 GB; the RTX 6000 Ada is an Ada Lovelace part and the RTX A4000 is Ampere (compute capability 8.9 vs 8.6); only the RTX 6000 Ada supports FP8 compute. On price, the RTX 6000 Ada lists from $0.814/GPU/hr and the RTX A4000 from $0.167/GPU/hr.
How widely available are the RTX 6000 Ada and the RTX A4000?
The RTX 6000 Ada is listed in 3 regions and the RTX A4000 in 2 regions right now.
How much does 1,000 GPU-hours cost on the RTX 6000 Ada vs the RTX A4000?
At the lowest rates listed today, 1,000 GPU-hours costs $814 on the RTX 6000 Ada and $167 on the RTX A4000, a difference of $647 for the same runtime. Rates are per GPU per hour and update hourly.
How much VRAM does the RTX 6000 Ada have compared to the RTX A4000?
The RTX 6000 Ada has 48 GB of VRAM; the RTX A4000 has 16 GB.
Does the RTX 6000 Ada or the RTX A4000 support NVLink?
Neither the RTX 6000 Ada nor the RTX A4000 has a dedicated GPU-to-GPU interconnect.
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 6000 Ada page and RTX A4000 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 6000 Ada VRAM calculator and the RTX A4000 VRAM calculator, or browse every model by generation in the GPU index.
More RTX 6000 Ada comparisons
More RTX A4000 comparisons
Related reading: RTX 6000 Ada pricing and specs, and RTX 6000 Ada guide.
