AMD Radeon PRO W6800 vs AMD Radeon PRO W7700 Comparison

The AMD Radeon PRO W6800 and AMD Radeon PRO W7700 represent two distinct generations of AMD’s professional workstation graphics, with the W6800 built on the RDNA 2.0 architecture and the W7700 on the newer RDNA 3.0 architecture. The benchmark data shows a split decision: the W6800 wins the OpenCL test by 12.5%, while the W7700 counters with a 15.2% victory in Vulkan. This fundamental divergence in compute API performance, combined with significant differences in memory capacity, power draw, and display outputs, makes the choice between them heavily dependent on the specific workload and software environment.

FAQ

Q: Which card has the higher average benchmark score?

A: The AMD Radeon PRO W6800 has an average benchmark score of 135,396, which places it in the 96th percentile of all GPUs. The AMD Radeon PRO W7700 has a lower average score of 118,976, placing it in the 95th percentile, a gap of roughly 12% between the two.

Q: How does the W6800 perform in OpenCL compared to the W7700?

A: In the Geekbench OpenCL test, the W6800 scores 121,808, which is 12.5% higher than the W7700’s score of 108,245. This makes the W6800 the clear winner for OpenCL-based compute workloads.

Q: Which card wins in Vulkan performance, and by how much?

A: The W7700 takes the Vulkan test with a score of 129,706, outperforming the W6800’s 109,961 by a significant 15.2% margin. This suggests the W7700 has a distinct advantage in Vulkan API workloads.

Q: What are the memory capacity and type differences?

A: The W6800 comes with 32 GB of GDDR6 memory on a 256-bit bus, while the W7700 has 16 GB of GDDR6 memory on the same 256-bit bus width. Despite having half the capacity, the W7700’s memory runs at 18 Gbps effective, yielding a higher bandwidth of 576.0 GB/s versus the W6800’s 512.0 GB/s.

Q: What is the power consumption difference between the two cards?

A: The W6800 has a TDP of 250 W and requires a 600 W power supply, along with a 1x 6-pin plus 1x 8-pin power connector setup. The W7700 is more power-efficient, with a TDP of 190 W, a 450 W suggested PSU, and only a single 8-pin connector.

Q: Which card offers newer display output technology?

A: The W7700 features 4x DisplayPort 2.1 outputs, which is a newer standard. The W6800, in contrast, is equipped with 6x mini-DisplayPort 1.4a outputs, offering more physical display connections but with older port technology.

Where Each One Wins

The AMD Radeon PRO W6800 is the superior choice for OpenCL compute tasks and scenarios requiring massive memory capacity. With 32 GB of VRAM, it holds a clear advantage for large dataset handling, such as complex 3D rendering scenes, scientific simulations, or AI inference workloads that exceed the 16 GB capacity of the W7700. Its higher shading unit count (3840 vs. 3072) and texture mapping units (240 vs. 192) contribute to its 17.83 TFLOPS FP32 performance, which, while lower than the W7700's raw FP32 number, proves more effective in the OpenCL benchmark. The W6800 also offers more display outputs, making it a candidate for multi-monitor setups that need more than four connections.

The AMD Radeon PRO W7700 wins in Vulkan-based applications, which often include modern game engines, real-time renderers, and certain CAD/viewport workloads. Its 15.2% lead in the Vulkan benchmark, reaching 129,706 points, is substantial and indicates better driver optimization or hardware scheduling for that API. The W7700 also excels in raw compute throughput, boasting 31.95 TFLOPS FP32 and 63.90 TFLOPS FP16, which is nearly double the W6800’s respective figures. This compute headroom, combined with higher memory bandwidth (576.0 GB/s) and a more efficient 5 nm process node, positions it as a strong performer for GPU-accelerated tasks that leverage the newer RDNA 3.0 architecture’s dual-issue compute units. Its lower TDP of 190 W also makes it a more manageable fit for power-constrained environments.

Architecture Differences

The two cards are built on fundamentally different architectures. The W6800 uses the Navi 21 chip, based on RDNA 2.0, fabricated on TSMC’s 7 nm process. This chip contains 26,800 million transistors on a large 520 mm² die, resulting in a transistor density of 51.5 million per square millimeter. The W7700, conversely, employs the Navi 32 chip (codename "Wheat Nas") based on RDNA 3.0, manufactured on a more advanced 5 nm process. Despite having slightly more transistors at 28,100 million, the W7700’s die is significantly smaller at 346 mm², leading to a much higher transistor density of 81.2 million per square millimeter. This architectural shift to a denser, more efficient node is a key differentiator.

The compute architecture also diverges. The W6800 has 60 ray tracing cores, while the W7700 has 48. The W7700 compensates with a higher clock speed, boosting to 2600 MHz versus the W6800’s 2322 MHz. The RDNA 3.0 architecture in the W7700 is designed for higher throughput per compute unit, which is reflected in its FP32 performance of 31.95 TFLOPS, a figure that is nearly 80% higher than the W6800’s 17.83 TFLOPS, despite having fewer shading units (3072 vs. 3840). Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API feature parity is maintained, but the underlying hardware implementation differs significantly.

Specification Differences

The most obvious specification difference is memory capacity: the W6800 offers 32 GB, while the W7700 offers 16 GB. Both use GDDR6 on a 256-bit bus, but the W7700’s memory is faster at 2250 MHz (18 Gbps effective), giving it 576.0 GB/s bandwidth compared to the W6800’s 2000 MHz (16 Gbps effective) and 512.0 GB/s. The physical dimensions also differ, with the W6800 being longer at 267 mm (10.5 inches) and taller at 120 mm (4.7 inches) with a width of 50 mm, while the W7700 is more compact at 241 mm (9.5 inches) in length and 111 mm (4.4 inches) in height, with no width specified.

Power requirements are another key split. The W6800 has a 250 W TDP, requires a 600 W PSU, and uses a 1x 6-pin + 1x 8-pin connector configuration. The W7700 is more efficient, with a 190 W TDP and a 450 W PSU recommendation, needing only a single 8-pin connector. Display outputs differ as well: the W6800 has 6x mini-DisplayPort 1.4a, whereas the W7700 has 4x DisplayPort 2.1. The W6800 is marked as end-of-life, while the W7700’s production status is not specified. The W6800’s launch MSRP was 2,249 USD, and the W7700’s launch MSRP was 999 USD. Release dates also separate them: the W6800 launched on 2021-06-07, and the W7700 on 2023-11-12.

Head-to-Head Benchmarks

The head-to-head benchmark results provide a clear, if split, picture. In the Geekbench OpenCL test, the W6800 achieves a score of 121,808 compared to the W7700’s 108,245. This 12.5% delta is a decisive win for the older card, indicating that its larger memory pool and higher shading unit count provide a tangible benefit in OpenCL compute tasks. This is a notable result, as it suggests that the architectural improvements in RDNA 3.0 do not automatically translate to superior performance in all APIs.

In contrast, the Geekbench Vulkan test shows a complete reversal. The W7700 scores 129,706, while the W6800 manages only 109,961. The 15.2% margin in favor of the W7700 is even larger than the W6800’s OpenCL win. This demonstrates that the W7700’s newer architecture, with its higher boost clock of 2600 MHz and enhanced compute throughput, is particularly well-suited for Vulkan’s lower-level hardware access. The data suggests that for real-time graphics and compute workloads utilizing Vulkan, the W7700 is the stronger performer, while OpenCL users would find the W6800 more capable. Each card claims one benchmark victory, making the decision a matter of software ecosystem and workload type rather than overall dominance.