L4 vs RTX A4000: Specs, VRAM & Price
Short answer: choose the L4 when 24 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 L4 has 24 GB of VRAM; the RTX A4000 has 16 GB.
You can rent both by the hour, no purchase required. L4 from $0.649/GPU/hr; RTX A4000 from $0.167/GPU/hr. The RTX A4000 is 74% cheaper at the entry rate.
L4
Good for inference and light fine-tuning workloads
RTX A4000
Good for inference and small-scale training workloads
Last updated: 2026-10-10 22:01:05 UTCRefreshes hourly
Specs side by side
| Spec | L4 | RTX A4000 |
|---|---|---|
| VRAM | 24 GB | 16 GB |
| Memory bandwidth | 300 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) | 72W | 140W |
| Regions | 1 | 2 |
On-demand price
| Rate | L4 | RTX A4000 |
|---|---|---|
| Lowest per GPU/hr | $0.649/GPU/hr | $0.167/GPU/hr |
Which is better for AI: L4 or RTX A4000?
Choose the L4 when 24 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.
L4 vs RTX A4000: common questions
Is the L4 or the RTX A4000 better for AI?
Short answer: choose the L4 when 24 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 L4 or the RTX A4000 cheaper to rent?
On Aquanode's live marketplace the L4 starts at $0.649/GPU/hr (median $0.649/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 74%.
What is the difference between the L4 and the RTX A4000?
The L4 has 24 GB of VRAM against the RTX A4000's 16 GB; the L4 is an Ada Lovelace part and the RTX A4000 is Ampere (compute capability 8.9 vs 8.6); only the L4 supports FP8 compute. On price, the L4 lists from $0.649/GPU/hr and the RTX A4000 from $0.167/GPU/hr.
How widely available are the L4 and the RTX A4000?
The L4 is listed in 1 region and the RTX A4000 in 2 regions right now.
How much does 1,000 GPU-hours cost on the L4 vs the RTX A4000?
At the lowest rates listed today, 1,000 GPU-hours costs $649 on the L4 and $167 on the RTX A4000, a difference of $482 for the same runtime. Rates are per GPU per hour and update hourly.
How much VRAM does the L4 have compared to the RTX A4000?
The L4 has 24 GB of VRAM; the RTX A4000 has 16 GB.
Does the L4 or the RTX A4000 support NVLink?
Neither the L4 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 L4 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 L4 VRAM calculator and the RTX A4000 VRAM calculator, or browse every model by generation in the GPU index.
More L4 comparisons
More RTX A4000 comparisons
Related reading: L4 pricing and specs, and The best GPUs for AI, ranked.
