RTX A4000 vs RTX PRO 6000 WS: Specs, VRAM & Price
Short answer: choose the RTX PRO 6000 WS when 96 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 A4000 has 16 GB of VRAM; the RTX PRO 6000 WS has 96 GB.
You can rent both by the hour, no purchase required. RTX A4000 from $0.167/GPU/hr across 2 providers; RTX PRO 6000 WS from $1.28/GPU/hr across 1 provider. The RTX A4000 is 87% cheaper at the entry rate.
RTX A4000
Good for inference and small-scale training workloads
RTX PRO 6000 WS
Good for training and serving frontier-scale LLMs
Last updated: 2026-10-07 21:45:57 UTCRefreshes hourly
Specs side by side
| Spec | RTX A4000 | RTX PRO 6000 WS |
|---|---|---|
| VRAM | 16 GB | 96 GB |
| Memory bandwidth | 448 GB/s | 1,792 GB/s |
| Architecture | Ampere | Blackwell |
| Compute capability | 8.6 | 12.0 |
| Precisions in hardware | FP32, FP16, BF16, INT4 | FP32, FP16, BF16, FP8, INT4 |
| Max board power (TDP) | 140W | 600W |
| Providers | 2 | 1 |
| Regions | 2 | 1 |
On-demand price
| Rate | RTX A4000 | RTX PRO 6000 WS |
|---|---|---|
| Lowest per GPU/hr | $0.167/GPU/hr | $1.28/GPU/hr (cheapest overall) |
Which is better for AI: RTX A4000 or RTX PRO 6000 WS?
Choose the RTX PRO 6000 WS when 96 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 A4000 vs RTX PRO 6000 WS: common questions
Is the RTX A4000 or the RTX PRO 6000 WS better for AI?
Short answer: choose the RTX PRO 6000 WS when 96 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 A4000 or the RTX PRO 6000 WS cheaper to rent?
On Aquanode's live marketplace the RTX A4000 starts at $0.167/GPU/hr (median $0.187/GPU/hr across 2 providers) and the RTX PRO 6000 WS starts at $1.28/GPU/hr (median $1.87/GPU/hr across 1 provider). The RTX A4000 is the cheaper of the two at the entry rate, by 87%.
What is the difference between the RTX A4000 and the RTX PRO 6000 WS?
The RTX A4000 has 16 GB of VRAM against the RTX PRO 6000 WS's 96 GB; the RTX A4000 is an Ampere part and the RTX PRO 6000 WS is Blackwell (compute capability 8.6 vs 12.0); only the RTX PRO 6000 WS supports FP8 compute. On price, the RTX A4000 lists from $0.167/GPU/hr and the RTX PRO 6000 WS from $1.28/GPU/hr.
How widely available are the RTX A4000 and the RTX PRO 6000 WS?
2 providers list the RTX A4000 and 1 list the RTX PRO 6000 WS, across 2 and 1 region respectively. No single provider currently lists both models.
How much does 1,000 GPU-hours cost on the RTX A4000 vs the RTX PRO 6000 WS?
At the lowest rates listed today, 1,000 GPU-hours costs $167 on the RTX A4000 and $1,284 on the RTX PRO 6000 WS, a difference of $1,117 for the same runtime. Rates are per GPU per hour and update hourly.
How much VRAM does the RTX A4000 have compared to the RTX PRO 6000 WS?
The RTX A4000 has 16 GB of VRAM; the RTX PRO 6000 WS has 96 GB.
Does the RTX A4000 or the RTX PRO 6000 WS support NVLink?
Neither the RTX A4000 nor the RTX PRO 6000 WS 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 A4000 page and RTX PRO 6000 WS 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 A4000 VRAM calculator and the RTX PRO 6000 WS VRAM calculator, or browse every model by generation in the GPU index.
More RTX A4000 comparisons
More RTX PRO 6000 WS comparisons
Related reading: RTX A4000 pricing and specs, The NVIDIA Inception program, explained, Google Colab alternatives for dedicated GPU access, Free GPU credits for students and researchers, and RunPod volume disk vs. network volume, compared.
