RTX 4090 vs RTX 4000 Ada
Explore a head to head comparison of specifications, performance, and pricing.
RTX 4090
The NVIDIA RTX 4090 delivers high-performance computing capabilities for AI, machine learning, and data science applications.
RTX 4000 Ada
The NVIDIA RTX 4000 Ada delivers high-performance computing capabilities for AI, machine learning, and data science applications.
RTX 4090 vs RTX 4000 Ada: Which Should You Choose?
The RTX 4090 offers 24 GB of VRAM — 1.2× the 20 GB on the RTX 4000 Ada — making it better suited for large model workloads that require holding more parameters in GPU memory. On FP16 throughput, the RTX 4090 delivers 82.58 TFLOPS versus 26.73 TFLOPS on the RTX 4000 Ada — 3× faster for mixed-precision training and inference. Memory bandwidth favors the RTX 4000 Ada at 0.36 TB/s compared to 0.00 TB/s on the RTX 4090, which directly impacts inference latency for memory-bandwidth-bound models. On Shadeform, the RTX 4090 starts from $0.60/hr versus $0.79/hr for the RTX 4000 Ada — 32% more expensive — reflecting the performance premium. The RTX 4090 is available across 3 cloud providers on Shadeform compared to 1 for the RTX 4000 Ada, giving more options for region and pricing flexibility.
RTX 4090 — Best Use Cases
- •LLM inference and model serving
- •Image generation and diffusion models
- •Smaller fine-tuning runs
- •Cost-efficient GPU compute
Choose RTX 4090 when:
- ✓You need 24 GB+ VRAM for large models or long context windows
- ✓Cost efficiency is your primary concern
- ✓You are training large models or running high-throughput inference
- ✓You need flexibility across multiple cloud providers or regions
RTX 4000 Ada — Best Use Cases
- •LLM inference and model serving
- •Image generation and diffusion models
- •Smaller fine-tuning runs
- •Cost-efficient GPU compute
Choose RTX 4000 Ada when:
- ✓20 GB VRAM is sufficient for your workload
- ✓Maximum performance justifies the higher cost
- ✓Your workload does not require peak FP16 throughput
- ✓Your preferred provider already has availability
See how the RTX 4090 & RTX 4000 Ada compare
Compare detailed hardware specifications and average pricing for the RTX 4090 and RTX 4000 Ada.
Compare Hardware Specifications
| RTX 4090 | RTX 4000 Ada | |
|---|---|---|
| GPU Type | RTX 4090 | RTX 4000 Ada |
| VRAM per GPU | 24 GB | 20 GB |
| Manufacturer | NVIDIA | NVIDIA |
| Architecture | Ada Lovelace | Ada Lovelace |
| Interconnect | PCIe Gen4 | PCIe Gen4 |
| Memory Bandwidth | 1.008 TB/s | 360 GB/s |
| FP16 TFLOPS | 82.58 TFLOPS (1:1) | 26.73 TFLOPS (1:1) |
| CUDA Cores | 16384 | 6144 |
| Tensor Cores | 512 (4th Gen) | 192 (4th Gen) |
| RT Cores | 128 (3rd Gen) | 48 (3rd Gen) |
| Base Clock | 2235 MHz | 1500 MHz |
| Boost Clock | 2520 MHz | 2175 MHz |
| TDP | 450W | 130W |
| Process Node | TSMC 4N | TSMC 4N |
| Data Formats | FP8, INT8, BF16, FP16, TF32, FP32 | FP8, INT8, BF16, FP16, TF32, FP32 |
Compare Average On-Demand Pricing
| RTX 4090 | RTX 4000 Ada | |
|---|---|---|
| 1 GPU | $0.60 /hr | $0.79 /hr |
| 2 GPUs | $1.20 /hr | N/A |
| 4 GPUs | $2.40 /hr | N/A |
| 8 GPUs | $3.97 /hr | N/A |
Frequently Asked Questions: RTX 4090 vs RTX 4000 Ada
The main differences are VRAM (24 GB vs 20 GB), FP16 throughput (82.58 vs 26.73 TFLOPS).
The RTX 4090 is generally better for large language model training due to its higher throughput and 24 GB of VRAM, which allows fitting larger models or larger batch sizes in a single pass. For smaller models or fine-tuning tasks where cost matters more, both GPUs can be effective.
On Shadeform, the RTX 4090 is available from $0.60/hr. The RTX 4000 Ada starts from $0.79/hr. Prices vary by provider, region, and contract length. Reserved commitments can reduce hourly costs significantly compared to on-demand pricing.
The RTX 4090 has more VRAM at 24 GB, compared to 20 GB on the RTX 4000 Ada. Higher VRAM allows you to run larger models without quantization, use longer context windows, and process larger batch sizes — all of which improve throughput and reduce latency for memory-bound workloads.
Based on TFLOPS per dollar, the RTX 4090 offers better raw compute value at current Shadeform on-demand rates. However, the best choice depends on your specific workload — if you need the extra VRAM or throughput of the RTX 4000 Ada, paying the premium may be justified by faster job completion and lower total cost.
The RTX 4090 is currently available across 3 cloud providers on Shadeform's network, compared to 1 for the RTX 4000 Ada. Shadeform lets you deploy either GPU across all available providers from a single platform, so you can always find available capacity without manually checking each cloud.
Mixing different GPU types in a single training cluster is generally not recommended, as it creates performance bottlenecks where faster GPUs wait for slower ones. For best results, use a homogeneous cluster of either RTX 4090 or RTX 4000 Ada. Shadeform supports on-demand clusters of up to 64 GPUs of the same type with no commitment required.
Explore RTX 4090 & RTX 4000 Ada Instances
Browse available instances with RTX 4090 and RTX 4000 Ada GPUs. Filter by provider, availability, and more to find the perfect instance for your needs.
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