AMD Radeon Pro W6800X Duo

The AMD Radeon Pro W6800X Duo is an end-of-life, quad-slot Apple MPX graphics card built on the 7 nm RDNA 2.0 architecture, featuring the Navi 21 chip with 26,800 million transistors on a 520 mm² die. It carries 32 GB of GDDR6 memory on a 256-bit bus delivering 512.0 GB/s of bandwidth, with a boost clock of 1967 MHz and a base clock of 1800 MHz. Its benchmark profile places it in the 98th percentile of all GPUs, with an average benchmark score of 143,766 across Geekbench Metal, OpenCL, and Vulkan tests.

Benchmark Performance

The Radeon Pro W6800X Duo’s average benchmark score of 143,766 establishes it as a high-end compute and graphics solution, but the data reveals a nuanced competitive position. Against the NVIDIA A10G, which scores 151,963, the AMD card trails by 5.4%, a gap that places it slightly behind in raw aggregate performance. This delta is notable because the A10G is a data-center-oriented accelerator, whereas the W6800X Duo targets professional Mac workflows; the benchmark indicates the NVIDIA part holds a modest edge in mixed workloads.

Conversely, the W6800X Duo leads the NVIDIA A10M by 6.3%, with the rival scoring 135,230. This advantage is consistent across the board, suggesting that AMD’s dual-chip design provides a meaningful uplift over the A10M in both compute-heavy and graphics-centric tasks. Similarly, the card outperforms the NVIDIA RTX 4000 Ada Generation, which also scores 135,218, by the same 6.3% margin. The near-identical scores of the A10M and RTX 4000 Ada Generation underscore that the W6800X Duo’s performance tier sits between these two NVIDIA offerings.

The widest gap is against the AMD Radeon RX 9070 GRE, which scores 134,417. Here, the W6800X Duo is 7% ahead, a clear margin that reflects its dual-GPU architecture and higher memory bandwidth. In specific API tests, the Geekbench Metal score of 180,749 is particularly strong, outpacing the OpenCL score of 124,927 and the Vulkan score of 125,622 by substantial margins. This Metal dominance aligns with the card’s Apple MPX interface and macOS-oriented design, indicating that native Metal applications extract more performance than cross-platform OpenCL or Vulkan workloads.

The FP32 compute rate of 15.11 TFLOPS, combined with FP16 at 30.21 TFLOPS (2:1), positions the card for heavy parallel workloads. The pixel rate of 188.8 GPixel/s and texture rate of 472.1 GTexel/s further support high-resolution rendering tasks. Overall, the data shows a card that is competitive with top-tier NVIDIA accelerators but not class-leading; its 98th percentile ranking reflects strong absolute performance, yet the 5.4% deficit to the A10G and the 6.3–7% leads over the next three rivals define its exact tier.

Power and Cooling

The Radeon Pro W6800X Duo carries a TDP of 400 W, which is substantial for a professional graphics card. This power draw necessitates a suggested PSU rating of 800 W, ensuring stable operation under sustained load. The card’s quad-slot width indicates a massive cooling solution, required to dissipate the heat generated by dual Navi 21 dies. The physical dimensions are 267 mm in length (10.5 inches) and 120 mm in height (4.7 inches), making it a large component that demands ample chassis space.

Power connector requirements are not specified in the data, but the Apple MPX bus interface likely supplies power directly through the proprietary connector, simplifying installation in compatible Mac Pro systems. The 400 W TDP is a hard ceiling for thermal design, and the quad-slot cooler is engineered to handle that load without throttling under typical professional workloads. For system builders, the 800 W suggested PSU provides a comfortable headroom, though actual power consumption will vary with load intensity and API usage.

The 7 nm process node from TSMC contributes to efficiency relative to older architectures, but the dual-chip design inherently raises power demands. Memory power is also a factor, with 32 GB of GDDR6 running at 16 Gbps effective across a 256-bit bus. The combination of high memory bandwidth and dual compute dies means the cooling solution must manage heat from both the GPU cores and memory modules. In practice, the quad-slot form factor is the primary trade-off, as it limits compatibility but ensures sustained performance in workstations designed for such cards.

Who Should Consider It

Benchmark results indicate that the Radeon Pro W6800X Duo is best suited for professionals running Metal-optimized applications at high resolutions and demanding settings. The Geekbench Metal score of 180,749 is the standout metric, suggesting that macOS-native creative software—such as compositing, 3D rendering, or video editing tools that leverage Metal—will see the greatest benefit. For users working at 4K or higher resolutions, the 32 GB memory capacity and 512.0 GB/s bandwidth provide ample headroom for large textures and complex scenes, reducing the need for asset swapping.

The card’s 7% lead over the Radeon RX 9070 GRE and 6.3% lead over the RTX 4000 Ada Generation in average score means it is a viable option for those who need professional-grade reliability and Apple MPX integration. However, the 5.4% deficit to the NVIDIA A10G suggests that pure compute tasks, particularly those run in OpenCL or Vulkan, may be better served by that rival. Users prioritizing cross-platform API performance should weigh the W6800X Duo’s Vulkan score of 125,622 against the A10G’s aggregate advantage.

For gaming or consumer workloads, the card’s quad-slot size and 400 W TDP are prohibitive, but for a Mac Pro workstation, these are acceptable constraints. The 98th percentile ranking confirms it outperforms the vast majority of GPUs, making it a top-tier choice for high-end visual effects, scientific visualization, or machine learning inference where Metal acceleration is available. Conversely, users on Windows or Linux systems may find the Apple MPX interface limiting, as it is not a standard PCIe form factor. The data supports a recommendation for Mac-centric professionals who demand maximum Metal performance and can accommodate the physical and power requirements.

FAQ

Q: What is the average benchmark score of the Radeon Pro W6800X Duo?

A: The average benchmark score is 143,766, based on Geekbench Metal, OpenCL, and Vulkan tests.

Q: How does it compare to the NVIDIA A10G in performance?

A: The NVIDIA A10G scores 151,963, which is 5.4% higher than the W6800X Duo’s average score.

Q: What is the recommended PSU wattage for this card?

A: The suggested PSU rating is 800 W, given the card’s 400 W TDP.

Q: How much memory does it have and what is the bandwidth?

A: It has 32 GB of GDDR6 memory with a 512.0 GB/s bandwidth over a 256-bit bus.

Q: What is the best-performing API for this card?

A: The Geekbench Metal score of 180,749 is significantly higher than OpenCL’s 124,927 and Vulkan’s 125,622, indicating Metal is the strongest API.

Q: What is the production status and release date?

A: The card is end-of-life, with a release date of August 2, 2021, and a launch MSRP of 4,999 USD.

How It Compares

Against the NVIDIA A10G, the W6800X Duo falls short by 5.4% in average score, with the rival achieving 151,963 versus 143,766. This deficit places the AMD card in a secondary position for raw compute throughput, though the gap is narrow enough that specific Metal-optimized workloads may close it. The A10G’s data-center heritage likely explains its edge in aggregate benchmarks, but the W6800X Duo’s dual-chip design remains competitive.

The NVIDIA A10M, scoring 135,230, trails the W6800X Duo by 6.3%. This lead is consistent across the benchmark suite, confirming that the AMD card delivers a clear performance advantage over the A10M. For users choosing between these two, the W6800X Duo offers superior average performance, though the A10M’s different form factor and ecosystem may appeal to non-Mac platforms.

The RTX 4000 Ada Generation also scores 135,218, tying closely with the A10M. The W6800X Duo’s 6.3% advantage over this NVIDIA workstation card is notable, especially given the RTX 4000 Ada’s more recent architecture. The data suggests that the dual-chip AMD solution outperforms a single Ada die in these benchmarks, though power and size trade-offs are substantial.

Finally, the AMD Radeon RX 9070 GRE, with a score of 134,417, is 7% behind the W6800X Duo. This is the largest delta among the nearest rivals, indicating that the professional card’s additional memory and dual-GPU configuration provide a meaningful uplift over a consumer-oriented Radeon. The 7% margin solidifies the W6800X Duo’s position as the stronger performer, but the RX 9070 GRE’s lower power and smaller size may make it a more practical choice for non-Mac systems.