NVIDIA DGX Spark vs NVIDIA GeForce RTX 4090 24GB
Side-by-side specifications, performance, and rental pricing for datacenter AI workloads.
NVIDIA DGX Spark
Full specs →NVIDIA GeForce RTX 4090 24GB
Full specs →Specifications
Performance (TFLOPS)
FLOPS by Precision
What actually differs
The DGX Spark is the newer part: Grace Blackwell, launched in 2025, against the GeForce RTX 4090's Ada Lovelace from 2022. Newer architectures typically add lower-precision formats and better throughput per watt, so check the precision rows your workload actually uses.
Memory is 128 GB against 24 GB, fed at 273 GB/s versus 1.0 TB/s. More memory per GPU means larger models fit before you have to shard across cards, which often matters more than raw TFLOPS for inference.
For LLM training and inference, weight the FP8 and FP16 rows and memory capacity most heavily. For scientific and HPC workloads, the FP64 row is the one to read.
Frequently asked questions
Which has more memory, the DGX Spark or the GeForce RTX 4090?
The DGX Spark carries 128 GB of memory versus 24 GB for the GeForce RTX 4090. Memory bandwidth is 273 GB/s for the DGX Spark and 1.0 TB/s for the GeForce RTX 4090.
How much power do the DGX Spark and the GeForce RTX 4090 draw?
The DGX Spark is rated at 140 W TDP and the GeForce RTX 4090 at 450 W. On FP32 throughput per watt, the GeForce RTX 4090 is the more efficient part.
Can I rent the DGX Spark or the GeForce RTX 4090 in the cloud?
Yes. Live cloud listings tracked by Flopper start at $0.34 per GPU hour. The rental pricing section on this page lists current providers and rates for both GPUs.
Where to Rent
NVIDIA GeForce RTX 4090 24GB
| Provider | Configuration | Price/GPU-hr | Checked | |
|---|---|---|---|---|
| 4× GeForce RTX 4090 24GB Community | $0.34 | 1h ago | View → | |
| 1× GeForce RTX 4090 24GB Community | $0.34 | 1h ago | View → | |
 GPU.ai | 1× GeForce RTX 4090 24GB Community | $0.38 | 1h ago | View → |
 Oblivus | 1× GeForce RTX 4090 24GB Reserved | $0.44 | 1h ago | View → |
 Beam | 1× GeForce RTX 4090 24GB | $0.44 | 1h ago | View → |
| 1× GeForce RTX 4090 24GB Spot | $0.57 | 1h ago | View → | |
 Lium | 1× GeForce RTX 4090 24GB Community | $0.58 | 1h ago | View → |
| Oblivus | 1× GeForce RTX 4090 24GB | $0.64 | 1h ago | View → |
 Spheron | 1× GeForce RTX 4090 24GB | $0.72 | 1h ago | View → |
| 1× GeForce RTX 4090 24GB | $0.74 | 1h ago | View → | |
| GPU.ai | 1× GeForce RTX 4090 24GB | $0.74 | 1h ago | View → |
| 1× GeForce RTX 4090 24GB | $0.99 | 1h ago | View → | |
 Shadeform Excess Supply capacity | 8× GeForce RTX 4090 24GB | $0.40 | 1h ago | View → |
| Shadeform Phyntec capacity | 8× GeForce RTX 4090 24GB | $0.40 | 1h ago | View → |
| Shadeform BoostRun capacity | 8× GeForce RTX 4090 24GB | $0.49 | 1h ago | View → |
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