Radeon PRO W6400 vs RTX A400
Workstation Verdict
Both are professional workstation GPUs — compare the specs below to find the right fit for your workload.
Maximum Capacity Reached. Remove a model to add another. (2/2)
VS
Price
Awaiting Data
VRAM
4 GB GDDR6✓
Mem. Speed
128 GB/s✓
FP32 Compute
3.6 TFLOPS✓
Key Specs Advantage
+20% FP32 (TFLOPS) (3.6 TFLOPS vs 3 TFLOPS)
NVIDIA
RTX A400Price
€169✓
VRAM
4 GB GDDR6✓
Mem. Speed
128 GB/s✓
FP32 Compute
3 TFLOPS
Key Specs Advantage
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.
Which should you buy: Radeon PRO W6400 or RTX A400?
Both cards serve similar workloads. Base your decision on whichever spec matters most: VRAM for model capacity, memory bandwidth for inference speed, and FP32 compute for training throughput.
Frequently Asked Questions
Can the Radeon PRO W6400 or RTX A400 run large language models?
Yes — with 4GB of VRAM each, both support a similar range of models. Memory bandwidth and compute throughput then differentiate their performance.
Which is better for AI training?
The Radeon PRO W6400 has the advantage at 3.6 TFLOPS vs 3 TFLOPS, making training runs proportionally faster than on the RTX A400.
Which should you buy: Radeon PRO W6400 or RTX A400?
Both cards serve similar workloads. Base your decision on whichever spec matters most: VRAM for model capacity, memory bandwidth for inference speed, and FP32 compute for training throughput.
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 |