GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
The Radeon PRO W7900 has more VRAM (48GB vs 32GB), making it better suited for large models and memory-intensive workloads. Its memory bandwidth is 69% higher (864 GB/s vs 512 GB/s), translating directly to faster inference throughput.
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Comparable or lower specs
Radeon PRO W6800 vs Radeon PRO W7900: In-Depth Breakdown
VRAM: Radeon PRO W6800 vs Radeon PRO W7900
The Radeon PRO W7900 carries 48GB of VRAM versus 32GB on the Radeon PRO W6800. 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 16GB advantage here means the Radeon PRO W7900 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 Radeon PRO W7900 delivers 864 GB/s versus 512 GB/s on the Radeon PRO W6800, a 69% edge. For models already loaded into VRAM, token generation speed scales closely with this number: the Radeon PRO W7900 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 Radeon PRO W7900 delivers 61.3 TFLOPS against 17.8 TFLOPS for the Radeon PRO W6800 — a 244% compute advantage. Training runs and heavy matrix operations will complete proportionally faster on the Radeon PRO W7900.
Which should you buy: Radeon PRO W6800 or Radeon PRO W7900?
The Radeon PRO W7900 is the stronger choice for large-model workloads where VRAM is the bottleneck. The Radeon PRO W6800 is more economical, and sufficient if your models fit within its 32GB.
Frequently Asked Questions
Can the Radeon PRO W6800 or Radeon PRO W7900 run large language models?
Which is faster for LLM inference, the Radeon PRO W6800 or the Radeon PRO W7900?
Which is better for AI training?
Technical Specifications Comparison
Architecture & Cores
| Specification | Radeon PRO W6800 | Radeon PRO W7900 |
|---|---|---|
| Architecture | RDNA 2 | RDNA 3 |
| CUDA Cores (Stream Processors / Stream Processors) | 3,840 | 6,144✓ |
Memory
| Specification | Radeon PRO W6800 | Radeon PRO W7900 |
|---|---|---|
| VRAM Capacity | 32 GB | 48 GB✓ |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 256-bit | 384-bit✓ |
| Bandwidth | 512 GB/s | 864 GB/s✓ |
Connectivity & Power
| Specification | Radeon PRO W6800 | Radeon PRO W7900 |
|---|---|---|
| Interface | PCIe 4.0 x16 | PCIe 4.0 x16 |
| TDP | 250 W✓ | 295 W |
| Released | May 2021 | Nov 2022 |
Workstation
| Specification | Radeon PRO W6800 | Radeon PRO W7900 |
|---|---|---|
| FP32 (TFLOPS) | 17.8 TFLOPS | 61.3 TFLOPS✓ |
| ECC | Yes | Yes |
| NVLink | No | No |
| Form factor | dual-slot | dual-slot |