GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
The RTX A2000 6GB has more VRAM (6GB vs 4GB), making it better suited for large models and memory-intensive workloads. Its memory bandwidth is 125% higher (288 GB/s vs 128 GB/s), translating directly to faster inference throughput. The Radeon PRO W6400 is $1,004 EUR cheaper than the RTX A2000 6GB.
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Comparable or lower specs
Radeon PRO W6400 vs RTX A2000 6GB: In-Depth Breakdown
VRAM: Radeon PRO W6400 vs RTX A2000 6GB
The RTX A2000 6GB carries 6GB of VRAM versus 4GB on the Radeon PRO W6400. VRAM capacity is the primary constraint for running AI models without quantization — a 70B-parameter model in FP16 requires roughly 140GB, and even smaller models benefit from extra headroom. The 2GB advantage here means the RTX A2000 6GB can run larger models natively and handle bigger batch sizes in production.
Inference Speed: Memory Bandwidth
Memory bandwidth determines how quickly data is fed to the compute units — it's the main bottleneck for autoregressive inference (token generation in LLMs). The RTX A2000 6GB delivers 288 GB/s versus 128 GB/s on the Radeon PRO W6400, a 125% edge. For models already loaded into VRAM, token generation speed scales closely with this number: the RTX A2000 6GB will produce tokens proportionally faster in bandwidth-bound workloads.
AI Training & Compute
For model training, scientific simulation, and rendering, FP32 throughput is the key metric. The RTX A2000 6GB delivers 8 TFLOPS against 3.6 TFLOPS for the Radeon PRO W6400 — a 122% compute advantage. Training runs and heavy matrix operations will complete proportionally faster on the RTX A2000 6GB.
Price & Value
The Radeon PRO W6400 lists from $255 EUR, $1,004 EUR less than the RTX A2000 6GB at $1,259 EUR. 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 A2000 6GB?
Choose the RTX A2000 6GB for maximum capacity — it leads on VRAM, bandwidth, and compute, making it the better fit for large models and training jobs. The Radeon PRO W6400 is the more budget-friendly option ($1,004 EUR 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 A2000 6GB run large language models?
Which is faster for LLM inference, the Radeon PRO W6400 or the RTX A2000 6GB?
Which is better for AI training?
Technical Specifications Comparison
Architecture & Cores
| Specification | Radeon PRO W6400 | RTX A2000 6GB |
|---|---|---|
| Architecture | RDNA 2 | Ampere |
| CUDA Cores (Stream Processors / CUDA Cores) | 768 | 3,328✓ |
Memory
| Specification | Radeon PRO W6400 | RTX A2000 6GB |
|---|---|---|
| VRAM Capacity | 4 GB | 6 GB✓ |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 64-bit | 192-bit✓ |
| Bandwidth | 128 GB/s | 288 GB/s✓ |
Connectivity & Power
| Specification | Radeon PRO W6400 | RTX A2000 6GB |
|---|---|---|
| Interface | PCIe 4.0 x4 | PCIe 4.0 x16 |
| TDP | 50 W✓ | 70 W |
| Released | Mar 2022 | Jan 2022 |
Workstation
| Specification | Radeon PRO W6400 | RTX A2000 6GB |
|---|---|---|
| FP32 (TFLOPS) | 3.6 TFLOPS | 8 TFLOPS✓ |
| ECC | Yes | Yes |
| NVLink | No | No |
| Form factor | low-profile | low-profile |