GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
The RTX A400 is $91 USD cheaper than the Radeon PRO W6400.
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Comparable or lower specs
Radeon PRO W6400 vs RTX A400: In-Depth Breakdown
AI Training & Compute
For model training, scientific simulation, and rendering, FP32 throughput is the key metric. The Radeon PRO W6400 delivers 3.6 TFLOPS against 3 TFLOPS for the RTX A400 — a 20% compute advantage. Training runs and heavy matrix operations will complete proportionally faster on the Radeon PRO W6400.
Price & Value
The RTX A400 lists from $179 USD, $91 USD less than the Radeon PRO W6400 at $270 USD. For budget-constrained teams, the savings may outweigh the spec gap — especially if the smaller card covers your typical workload.
Which should you buy: Radeon PRO W6400 or RTX A400?
Choose the Radeon PRO W6400 for maximum capacity — it leads on VRAM, bandwidth, and compute, making it the better fit for large models and training jobs. The RTX A400 is the more budget-friendly option ($91 USD less) — a solid choice if your models fit within its 4GB and inference volume is moderate.
Frequently Asked Questions
Can the Radeon PRO W6400 or RTX A400 run large language models?
Which is better for AI training?
Technical Specifications Comparison
Architecture & Cores
| Specification | Radeon PRO W6400 | RTX A400 |
|---|---|---|
| Architecture | RDNA 2 | Ada Lovelace |
| CUDA Cores (Stream Processors / CUDA Cores) | 768 | 768 |
Memory
| Specification | Radeon PRO W6400 | RTX A400 |
|---|---|---|
| VRAM Capacity | 4 GB | 4 GB |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 64-bit | 64-bit |
| Bandwidth | 128 GB/s | 128 GB/s |
Connectivity & Power
| Specification | Radeon PRO W6400 | RTX A400 |
|---|---|---|
| Interface | PCIe 4.0 x4 | PCIe 4.0 x16 |
| TDP | 50 W | 50 W |
| Released | Mar 2022 | Aug 2023 |
Workstation
| Specification | Radeon PRO W6400 | RTX A400 |
|---|---|---|
| FP32 (TFLOPS) | 3.6 TFLOPS✓ | 3 TFLOPS |
| ECC | Yes | Yes |
| NVLink | No | No |
| Form factor | low-profile | low-profile |