L4 vs RTX 4090

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Side-by-side GPU comparison: specs, memory, compute performance, and live cloud pricing.

Verdict

For compute-bound workloads like training, RTX 4090 delivers 1.4× higher FP16 throughput.

Specifications

L4RTX 4090
VRAM24 GB24 GB
VRAM TypeGDDR6GDDR6X
Memory Bandwidth0.3 TB/s1.0 TB/s
FP16 Performance121 TFLOPS165 TFLOPS
ManufacturerNVIDIANVIDIA
FP8 SupportYesYes
FP4 SupportNoNo

Price / Performance

Based on cheapest single-GPU on-demand pricing. Lower $/TFLOP = better compute value; lower $/GB = better memory value.

L4RTX 4090
$/hr (cheapest)$0.39✓ best$0.40
$/TFLOP (compute value)$0.0032$0.0024✓ best
$/GB VRAM (memory value)$0.0163✓ best$0.0167

Cloud Pricing

Cheapest on-demand price per provider (single GPU).

L4

ProviderOn-demandSpotRent
RunPod$0.39/hr$0.22/hrRent
Google Cloud$0.56/hr$0.16/hr
Amazon Web Services$0.80/hr$0.13/hr

RTX 4090

ProviderOn-demandSpotRent
Vast.ai$0.40/hr—Rent
RunPod$0.59/hr$0.29/hrRent

Model Compatibility

Models from the catalog that fit on each GPU, grouped by required precision.

L4 (566 models)

RTX 4090 (566 models)

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Pricing data refreshed hourly · Last updated April 11, 2026 · Browse all comparisons