L4 vs RTX 4000 SFF Ada: Specs, VRAM & Price
Short answer: choose the L4 when 24 GB of VRAM is the gating requirement. Choose the RTX 4000 SFF Ada when 20 GB is enough for the workload and the lower hourly rate points that way.
The L4 has 24 GB of VRAM; the RTX 4000 SFF Ada has 20 GB.
You can rent both by the hour, no purchase required. L4 from $0.649/GPU/hr; RTX 4000 SFF Ada from $0.198/GPU/hr. The RTX 4000 SFF Ada is 69% cheaper at the entry rate.
L4
Good for inference and light fine-tuning workloads
RTX 4000 SFF Ada
Good for inference and light fine-tuning workloads
Last updated: 2026-10-10 22:02:35 UTCRefreshes hourly
Specs side by side
| Spec | L4 | RTX 4000 SFF Ada |
|---|---|---|
| VRAM | 24 GB | 20 GB |
| Memory bandwidth | 300 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) | 72W | – |
| Regions | 1 | 1 |
On-demand price
| Rate | L4 | RTX 4000 SFF Ada |
|---|---|---|
| Lowest per GPU/hr | $0.649/GPU/hr | $0.198/GPU/hr (cheapest overall) |
Which is better for AI: L4 or RTX 4000 SFF Ada?
Choose the L4 when 24 GB of VRAM is the gating requirement. Choose the RTX 4000 SFF Ada when 20 GB is enough for the workload and the lower hourly rate points that way.
L4 vs RTX 4000 SFF Ada: common questions
Is the L4 or the RTX 4000 SFF Ada better for AI?
Short answer: choose the L4 when 24 GB of VRAM is the gating requirement. Choose the RTX 4000 SFF Ada when 20 GB is enough for the workload and the lower hourly rate points that way.
Is the L4 or the RTX 4000 SFF Ada cheaper to rent?
On Aquanode's live marketplace the L4 starts at $0.649/GPU/hr (median $0.649/GPU/hr) and the RTX 4000 SFF Ada starts at $0.198/GPU/hr (median $0.198/GPU/hr). The RTX 4000 SFF Ada is the cheaper of the two at the entry rate, by 69%.
What is the difference between the L4 and the RTX 4000 SFF Ada?
The L4 has 24 GB of VRAM against the RTX 4000 SFF Ada's 20 GB; both are Ada Lovelace parts; both run BF16, FP8, INT4 workloads in hardware. On price, the L4 lists from $0.649/GPU/hr and the RTX 4000 SFF Ada from $0.198/GPU/hr.
How widely available are the L4 and the RTX 4000 SFF Ada?
The L4 is listed in 1 region and the RTX 4000 SFF Ada in 1 region right now.
How much does 1,000 GPU-hours cost on the L4 vs the RTX 4000 SFF Ada?
At the lowest rates listed today, 1,000 GPU-hours costs $649 on the L4 and $198 on the RTX 4000 SFF Ada, a difference of $451 for the same runtime. Rates are per GPU per hour and update hourly.
How much VRAM does the L4 have compared to the RTX 4000 SFF Ada?
The L4 has 24 GB of VRAM; the RTX 4000 SFF Ada has 20 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 L4 page and RTX 4000 SFF 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 L4 VRAM calculator and the RTX 4000 SFF Ada VRAM calculator, or browse every model by generation in the GPU index.
More L4 comparisons
More RTX 4000 SFF Ada comparisons
Related reading: L4 pricing and specs, and The best GPUs for AI, ranked.
