RTX 3080 vs RTX A4000: Specs, VRAM & Price
Short answer: choose the RTX A4000 when 16 GB of VRAM is the gating requirement. Choose the RTX 3080 when 12 GB is enough for the workload and availability points that way.
The RTX 3080 has 12 GB of VRAM; the RTX A4000 has 16 GB.
You can rent both by the hour, no purchase required. RTX 3080 from $0.187/GPU/hr; RTX A4000 from $0.167/GPU/hr. The RTX A4000 is 11% cheaper at the entry rate.
RTX 3080
Good for inference and small-scale training workloads
RTX A4000
Good for inference and small-scale training workloads
Last updated: 2026-10-10 20:56:15 UTCRefreshes hourly
Specs side by side
| Spec | RTX 3080 | RTX A4000 |
|---|---|---|
| VRAM | 12 GB | 16 GB |
| Memory bandwidth | 760 GB/s | 448 GB/s |
| Architecture | Ampere | Ampere |
| Compute capability | 8.6 | 8.6 |
| Precisions in hardware | FP32, FP16, BF16, INT4 | FP32, FP16, BF16, INT4 |
| Peak FP16/BF16 tensor TFLOPS | 119 TFLOPS | – |
| Max board power (TDP) | 320W | 140W |
| Regions | 2 | 2 |
On-demand price
| Rate | RTX 3080 | RTX A4000 |
|---|---|---|
| Lowest per GPU/hr | $0.187/GPU/hr (cheapest overall) | $0.167/GPU/hr |
Which is better for AI: RTX 3080 or RTX A4000?
Choose the RTX A4000 when 16 GB of VRAM is the gating requirement. Choose the RTX 3080 when 12 GB is enough for the workload and availability points that way.
RTX 3080 vs RTX A4000: common questions
Is the RTX 3080 or the RTX A4000 better for AI?
Short answer: choose the RTX A4000 when 16 GB of VRAM is the gating requirement. Choose the RTX 3080 when 12 GB is enough for the workload and availability points that way.
Is the RTX 3080 or the RTX A4000 cheaper to rent?
On Aquanode's live marketplace the RTX 3080 starts at $0.187/GPU/hr (median $0.198/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 11%.
What is the difference between the RTX 3080 and the RTX A4000?
The RTX 3080 has 12 GB of VRAM against the RTX A4000's 16 GB; both are Ampere parts; both run BF16, INT4 workloads in hardware. On price, the RTX 3080 lists from $0.187/GPU/hr and the RTX A4000 from $0.167/GPU/hr.
How widely available are the RTX 3080 and the RTX A4000?
The RTX 3080 is listed in 2 regions and the RTX A4000 in 2 regions right now.
How much does 1,000 GPU-hours cost on the RTX 3080 vs the RTX A4000?
At the lowest rates listed today, 1,000 GPU-hours costs $187 on the RTX 3080 and $167 on the RTX A4000, a difference of $20 for the same runtime. Rates are per GPU per hour and update hourly.
How much VRAM does the RTX 3080 have compared to the RTX A4000?
The RTX 3080 has 12 GB of VRAM; the RTX A4000 has 16 GB.
Does the RTX 3080 or the RTX A4000 support NVLink?
Neither the RTX 3080 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 3080 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 3080 VRAM calculator and the RTX A4000 VRAM calculator, or browse every model by generation in the GPU index.
More RTX 3080 comparisons
More RTX A4000 comparisons
Related reading: RTX 3080 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.
