Side-by-side GPU comparison: specs, memory, compute performance, and live cloud pricing.
Verdict
For compute-bound workloads like training, L4 delivers 1.7× higher FP16 throughput. At $0.25/hr vs $0.39/hr, RTX 3090 is the more cost-efficient choice for inference.
Specifications
| L4 | RTX 3090 | |
|---|---|---|
| VRAM | 24 GB | 24 GB |
| VRAM Type | GDDR6 | GDDR6X |
| Memory Bandwidth | 0.3 TB/s | 0.9 TB/s |
| FP16 Performance | 121 TFLOPS | 71 TFLOPS |
| Manufacturer | NVIDIA | NVIDIA |
| FP8 Support | Yes | No |
| FP4 Support | No | No |
Price / Performance
Based on cheapest single-GPU on-demand pricing. Lower $/TFLOP = better compute value; lower $/GB = better memory value.
| L4 | RTX 3090 | |
|---|---|---|
| $/hr (cheapest) | $0.39 | $0.25✓ best |
| $/TFLOP (compute value) | $0.0032✓ best | $0.0035 |
| $/GB VRAM (memory value) | $0.0163 | $0.0104✓ best |
Cloud Pricing
Cheapest on-demand price per provider (single GPU).
Model Compatibility
Models from the catalog that fit on each GPU, grouped by required precision.
L4 (566 models)
RTX 3090 (566 models)
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Pricing data refreshed hourly · Last updated April 11, 2026 · Browse all comparisons