Comparison · GPU vs GPU · read 00:32 UTCRTX 4090 vs L40S
Specifications, today's prices from 79 providers, price per unit of memory and compute, and who rents each cheapest. Better values are highlighted; lower is better for prices.
Side by sideSpecs, prices, value
Highlighted cells are the better of the two: more memory and compute, lower prices, lower cost per unit.
| RTX 4090 | L40S | Difference | |
|---|---|---|---|
| Memory & compute | |||
| VRAM | 24 GB | 48 GB | -50% |
| Memory bandwidth | 1.01 TB/s | 0.86 TB/s | +17% |
| FP16 tensor | — | 362 TFLOPS | — |
| FP32 | 82.6 TFLOPS | 91.6 TFLOPS | -10% |
| Power | 450 W | 350 W | +29% |
| Prices today | |||
| Cheapest on-demand | $0.13 | $0.38 | -65% |
| Median on-demand | $0.44 | $1.24 | -64% |
| Highest on-demand | $1.20 | $3.51 | -66% |
| Cheapest spot | $0.12 | $0.33 | -64% |
| Cheapest reserved | $0.18 | $0.44 | -59% |
| Current offers (n) | 40 | 140 | -71% |
| Providers with a fresh offer | 25 | 54 | -54% |
| Value | |||
| Per GB of VRAM · hour (cheapest) | $0.006 | $0.008 | -29% |
| Per GB of VRAM · hour (median) | $0.018 | $0.026 | -29% |
| Per PFLOP FP16 · hour (median) | — | $3.412 | — |
| Per TB/s · hour (median) | $0.437 | $1.430 | -69% |
| Trend | |||
| 30-day median change | +17.2% | +12.6% | — |
| 90-day median change | — | +19.9% | — |
90 days · median on-demand price · rebased to 100How the two have moved
Both medians indexed to 100 ninety days ago, so the slopes compare even though the price levels differ.
Cheapest providers today · on-demand · current offersWho rents each one cheapest
- 1
Vast.aiTrust 781× $0.13 - 2
GPUBankTrust 931× $0.23 - 3
gcube1× $0.25
- 1
LiumTrust 402× $0.38 - 2
Clore.aiTrust 491× $0.50 - 3GPUBankTrust 931× $0.55
Verdict · computed from the numbers aboveChoose one, choose the other
Choose the RTX 4090 if…
- the hourly price matters most: median $0.44 against $1.24, 64% less.
- you serve LLMs: memory bandwidth per dollar is better ($0.437 per TB/s-hour against $1.430).
Choose the L40S if…
- your model needs more than 24 GB per GPU: 48 GB against 24 GB.
- you want choice: 54 providers have a fresh offer today against 25.
Questions about RTX 4090 vs L40S
Which is cheaper to rent, the RTX 4090 or the L40S?
Today the cheapest current on-demand RTX 4090 is $0.13 per GPU-hour and the cheapest L40S is $0.38; medians are $0.44 and $1.24. Cheapest excludes offers marked unavailable and counts one floor per marketplace.
How much memory do the RTX 4090 and L40S have?
24 GB of GDDR6X on the RTX 4090, 48 GB of GDDR6 on the L40S, at 1.01 and 0.86 TB/s.
Where do these numbers come from?
From 180 current offers read on the providers' own pages and APIs over the last 45 days (reference 00:32 UTC), or in our October 2026 market study for the few providers our collector does not read. Specifications come from manufacturer datasheets. Every price on the GPU pages links to its receipt and shows its read date.