L40S vs RTX 4080 SUPER

Ada LovelacevsAda LovelaceUpdated 35 days ago

The NVIDIA L40S emerges as the superior choice for most AI and machine learning workloads. Its 48 GB VRAM, 362 TFLOPS FP16, and 864 GB/s bandwidth enable handling of large models and batches infeasible on the RTX 4080 SUPER's 16 GB and 48.7 TFLOPS, despite higher $1.15/hr average cost.

L40S from $0.55/hrRTX 4080 SUPER from $0.50/hr

Specifications Compared

SpecL40SRTX-4080
TDP350W320W
VRAM48 GB16 GB
CUDA Cores18,1769,728
Memory TypeGDDR6XGDDR6X
ArchitectureAda LovelaceAda Lovelace
Form FactorsPCIePCIe
InterconnectPCIe 4.0
Tensor Cores568304
FP8 Performance724 TFLOPS
FP16 Performance362 TFLOPS48.7 TFLOPS
FP32 Performance91 TFLOPS48.7 TFLOPS
FP64 Performance1.4 TFLOPS
INT8 Performance724 TOPS780 TOPS
Memory Bandwidth864 GB/s717 GB/s

Performance Analysis

Compute capabilities diverge sharply between the L40S and RTX 4080 SUPER. The L40S achieves 362 TFLOPS in FP16 for accelerated training and inference, paired with 91 TFLOPS FP32 for precise simulations, while the RTX 4080 SUPER matches only 48.7 TFLOPS in both formats. This FP16/FP32 delta means the L40S handles mixed-precision training 7.4 times faster in FP16, ideal for large neural networks.

Memory specifications further advantage the L40S: 48 GB VRAM supports models exceeding 16 GB limits of the RTX 4080 SUPER, preventing out-of-memory errors in LLM fine-tuning. The 864 GB/s bandwidth versus 717 GB/s allows larger batch sizes, reducing training epochs by enabling more data per iteration and cutting overall time.

Power draw reflects efficiency: L40S at 350W TDP sustains higher throughput, while RTX 4080 SUPER at 320W suits lower-density setups. In real-world terms, L40S excels in memory-bound tasks like diffusion models, where RTX 4080 SUPER suffices for smaller-scale inference.

Live Cloud Pricing

Real-time prices from 25+ providers. Updated every 60 seconds.

L40S

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
TensorDock
TensorDock
NVIDIA L40S
48GB VRAM
$0.55/GPU/hr
Available
RunPod
RunPod
NVIDIA L40S
48GB VRAM
$0.86/GPU/hr
Massed Compute
Massed Compute
NVIDIA L40S
48GB VRAM
$0.88/GPU/hr
Available
Massed Compute
Massed Compute
2×NVIDIA L40S
48GB VRAM
$0.88/GPU/hr
$1.76/hr total (2×)
Available
Massed Compute
Massed Compute
NVIDIA L40S
48GB VRAM
$0.88/GPU/hr
Available

RTX 4080 SUPER

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
RunPod
RunPod
NVIDIA GeForce RTX 4080 SUPER
16GB VRAM
$0.50/GPU/hr
RunPod
RunPod
NVIDIA GeForce RTX 4080
16GB VRAM
$0.50/GPU/hr

Compare real-time pricing across 25+ providers

When to Choose the L40S

Opt for the NVIDIA L40S in scenarios demanding extensive VRAM and compute, such as training large language models requiring over 16 GB. Its 48 GB GDDR6X handles massive datasets without splitting, and 362 TFLOPS FP16 accelerates convergence.

Datacenter deployments benefit from PCIe 4.0 and 864 GB/s bandwidth for high-throughput inference at scale, justifying $0.40/hr starting price across 20 offers.

When to Choose the RTX 4080 SUPER

Choose the NVIDIA GeForce RTX 4080 SUPER for budget-conscious tasks where 16 GB VRAM suffices, like lightweight inference or fine-tuning small models. At $0.17/hr average $0.32/hr, it delivers 48.7 TFLOPS FP16/FP32 cost-effectively.

Gaming-adjacent workloads or prototyping benefit from 320W TDP and 717 GB/s bandwidth, offering strong value across limited 3 cloud offers.

Use Cases

LLM Training
L40S

L40S's 48 GB VRAM and 362 TFLOPS FP16 support large models without memory constraints. RTX 4080 SUPER's 16 GB limits batch sizes.

LLM Inference
L40S

724 TFLOPS FP8 and 864 GB/s bandwidth on L40S enable high-throughput serving. 48 GB VRAM fits bigger models than RTX 4080 SUPER's 16 GB.

Fine-tuning
L40S

91 TFLOPS FP32 and ample VRAM on L40S speed precise adjustments for mid-sized LLMs. RTX 4080 SUPER works for tiny models only.

Stable Diffusion
Either

RTX 4080 SUPER's 48.7 TFLOPS suffices for standard generations at lower cost. L40S's higher specs accelerate batch-heavy or high-res tasks.

Scientific Computing
L40S

L40S's 91 TFLOPS FP32 outperforms RTX 4080 SUPER's 48.7 TFLOPS for simulations. 48 GB VRAM manages complex datasets.

Frequently Asked Questions

Which GPU has more VRAM: L40S or RTX 4080 SUPER?

The L40S offers 48 GB GDDR6X VRAM, three times the RTX 4080 SUPER's 16 GB. This enables larger models and batch sizes on L40S.

How do FP16 performances compare between L40S and RTX 4080 SUPER?

L40S delivers 362 TFLOPS FP16, over 7 times the RTX 4080 SUPER's 48.7 TFLOPS. This gap accelerates AI training and inference significantly.

What are the cloud pricing differences for these GPUs?

L40S starts at $0.40/hr averaging $1.15/hr across 20 offers. RTX 4080 SUPER begins at $0.17/hr averaging $0.32/hr over 3 offers.

Does L40S or RTX 4080 SUPER have higher memory bandwidth?

L40S provides 864 GB/s, surpassing RTX 4080 SUPER's 717 GB/s. Higher bandwidth supports larger batches in memory-intensive tasks.

What is the TDP for L40S versus RTX 4080 SUPER?

L40S has 350W TDP, slightly above RTX 4080 SUPER's 320W. Both fit PCIe slots but L40S sustains peak performance longer.

Can RTX 4080 SUPER handle LLM inference like L40S?

RTX 4080 SUPER manages small LLMs with 16 GB VRAM and 48.7 TFLOPS FP16. L40S excels for production-scale with 48 GB and 362 TFLOPS.

Which is cheaper to rent, the L40S or the RTX 4080?

Cloud rental prices for both the L40S and RTX 4080 vary by provider, configuration, and availability. This page shows live pricing from 25+ providers updated every 60 seconds. Scroll to the Live Cloud Pricing section to compare current rates.

How much VRAM does the L40S have compared to the RTX 4080?

The L40S has 48 GB of GDDR6X memory. The RTX 4080 has 16 GB of GDDR6X memory.

Can I find L40S and RTX 4080 GPUs available to rent right now?

Yes. This page shows real-time availability across 25+ cloud GPU providers. The Live Cloud Pricing section displays only in-stock offers with current pricing.

What is the main difference between the L40S and the RTX 4080?

The L40S uses the Ada Lovelace architecture (2023) while the RTX 4080 uses Ada Lovelace (2022). The L40S delivers 7.4x the FP16 throughput and 1.2x the memory bandwidth of the RTX 4080.

L40S vs RTX 4080 SUPER: 7.4x FP16 Gap, 48GB vs 16GB | GPUPerHour