AMD Radeon PRO W6600 vs AMD Radeon PRO W7800 Comparison

The Verdict

The data separates these two professional GPUs clearly. The AMD Radeon PRO W7800 is the dominant performer, winning both recorded head-to-head benchmark tests by a wide margin. It is a top-tier workstation card, sitting in the 97th percentile of all GPUs in the database, while the W6600 sits in the 92nd percentile. For professionals running heavy compute, rendering, or large dataset workloads, the W7800 is the clear choice if the budget allows. The W6600, while still a strong card and now end-of-life, serves a different purpose: it is a lower-power, single-slot option for systems where space and thermal envelope are primary constraints. The data does not support choosing the W6600 for raw performance, but its smaller footprint and drastically lower power draw make it a sensible pick for specific workstation builds that need professional features without the bulk of a dual-slot flagship.

Architecture Differences

The two cards come from different generations of AMD's RDNA architecture. The W7800 is built on RDNA 3.0 with the Navi 31 chip, codenamed Plum Bonito. It uses a 5 nm process from TSMC and packs 57,700 million transistors on a 529 mm² die. In contrast, the W6600 is based on RDNA 2.0 with the Navi 23 chip and uses a larger 7 nm process, housing 11,060 million transistors on a 237 mm² die. This generational gap explains many of the performance differences.

The core configurations are vastly different. The W7800 features 4480 shading units, 280 texture mapping units, 128 render output units, and 70 ray tracing cores. The W6600 has 1792 shading units, 112 TMUs, 64 ROPs, and only 28 ray tracing cores. That is a 2.5x difference in shading units and a 2.5x difference in ray tracing cores, which directly translates into the benchmark gap.

Memory architecture also differs significantly. The W7800 offers 32 GB of GDDR6 on a 256-bit bus, delivering 576.0 GB/s of bandwidth. The W6600 has 8 GB of GDDR6 on a 128-bit bus, yielding 224.0 GB/s. The W7800's memory runs at 2250 MHz (18 Gbps effective), while the W6600's runs at 1750 MHz (14 Gbps effective). The W7800 also supports PCIe 4.0 x16, while the W6600 uses PCIe 4.0 x8, which can affect data transfer rates in bandwidth-sensitive workloads.

Display outputs differ as well. The W7800 provides 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1, while the W6600 offers 4x DisplayPort 1.4a. The W7800 supports the newer DisplayPort standard, which is relevant for high-resolution, high-refresh-rate monitors. Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API compatibility is not a differentiator.

Head-to-Head Benchmarks

The recorded benchmark data shows a decisive victory for the W7800 in both tests. In Geekbench OpenCL, the W7800 scores 154,366 against the W6600's 73,514. That is a 110% advantage, meaning the W7800 is more than twice as fast in this compute-oriented workload. In Geekbench Vulkan, the W7800 scores 175,422 against the W6600's 78,428, a delta of 123.7%. The Vulkan gap is even wider, suggesting the W7800's newer architecture scales better in graphics-heavy tasks.

The average benchmark scores reinforce this picture. The W7800 has an average benchmark score of 164,894, while the W6600 averages 81,995. That is roughly double the average performance. The W7800's nearest rivals in the database include the NVIDIA RTX A5500 (avg score 165,217, delta -0.2%), the NVIDIA RTX 4500 Ada Generation (avg score 166,094, delta -0.7%), and the AMD Radeon Pro W6900X (avg score 168,574, delta -2.2%). These deltas show the W7800 is within 2.2% of these cards, making it a competitive high-end workstation option.

The W6600's nearest rivals are lower-tier cards. It sits 1.3% ahead of the AMD Radeon Pro Vega 64X (avg score 80,959), 2.7% ahead of the NVIDIA GeForce RTX 5090 (avg score 79,842), and 3.3% ahead of the NVIDIA Tesla P100 PCIe 12 GB (avg score 79,396). These are much older or less powerful cards, confirming the W6600's position in the mid-range segment.

In raw compute figures, the W7800 delivers 45.25 TFLOPS of FP32 performance versus the W6600's 9.247 TFLOPS. The FP16 figures are 90.50 TFLOPS (2:1) for the W7800 and 18.49 TFLOPS (2:1) for the W6600. The pixel rate is 323.2 GPixel/s for the W7800 against 165.1 GPixel/s for the W6600, and the texture rate is 707.0 GTexel/s versus 289.0 GTexel/s. Every measurable performance metric favors the W7800 by a significant margin.

FAQ

Q: Which card is faster in OpenCL compute workloads?

A: The AMD Radeon PRO W7800, scoring 154,366 versus 73,514 for the W6600, a 110% advantage.

Q: How big is the Vulkan performance gap?

A: The W7800 scores 175,422 in Geekbench Vulkan, while the W6600 scores 78,428, making the W7800 123.7% faster.

Q: Which card has more memory and bandwidth?

A: The W7800 has 32 GB of GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth. The W6600 has 8 GB on a 128-bit bus with 224.0 GB/s.

Q: What are the physical size and power differences?

A: The W7800 is dual-slot, 280 mm long, and has a 260 W TDP with 2x 8-pin power connectors. The W6600 is single-slot, 241 mm long, and has a 100 W TDP with a single 6-pin connector.

Q: Is the W6600 still being produced?

A: No, the production status for the W6600 is end-of-life. The W7800 is listed as active.

Q: Which card supports DisplayPort 2.1?

A: Only the W7800 supports DisplayPort 2.1 (3x ports plus 1x mini-DisplayPort). The W6600 uses four DisplayPort 1.4a outputs.

Where Each One Wins

The AMD Radeon PRO W7800 wins in every recorded benchmark category. It is the clear choice for compute-heavy tasks like 3D rendering, simulation, AI inference, and video processing where the 110% OpenCL lead and 123.7% Vulkan lead translate into real time savings. Its 32 GB memory capacity is a major advantage for large datasets, texture-heavy scenes, or multi-GPU rendering setups that need to hold entire models in VRAM. The 576.0 GB/s bandwidth also helps in memory-bound workloads. The W7800's higher pixel rate (323.2 GPixel/s) and texture rate (707.0 GTexel/s) make it better suited for high-resolution output and complex shading.

The AMD Radeon PRO W6600 has no benchmark wins in the data, but it still has a role. Its single-slot design and 100 W TDP make it an excellent fit for compact workstations, servers, or multi-GPU builds where space and power are limited. The 8 GB memory is enough for lighter professional workloads like CAD, 2D design, or moderate video editing. The 165.1 GPixel/s pixel rate is still respectable for many professional applications. The W6600 also supports the same API set (DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4), so software compatibility is identical to the W7800. For users who need professional-grade stability and features without the power draw or physical footprint of a flagship card, the W6600 remains a viable option, especially since it is now end-of-life and may be available at lower prices in the used market.

Specification Differences

The following fields differ between the two cards:

• Architecture: RDNA 3.0 (W7800) versus RDNA 2.0 (W6600)
• Chip: Navi 31 (W7800) versus Navi 23 (W6600)
• Process Node: 5 nm (W7800) versus 7 nm (W6600)
• Transistors: 57,700 million (W7800) versus 11,060 million (W6600)
• Die Size: 529 mm² (W7800) versus 237 mm² (W6600)
• Transistor Density: 109.1M / mm² (W7800) versus 46.7M / mm² (W6600)
• Base Clock: 1895 MHz (W7800) versus 2331 MHz (W6600)
• Boost Clock: 2525 MHz (W7800) versus 2580 MHz (W6600)
• Memory Clock: 2250 MHz, 18 Gbps effective (W7800) versus 1750 MHz, 14 Gbps effective (W6600)
• Memory Size: 32 GB (W7800) versus 8 GB (W6600)
• Memory Bus Width: 256 bit (W7800) versus 128 bit (W6600)
• Memory Bandwidth: 576.0 GB/s (W7800) versus 224.0 GB/s (W6600)
• Shading Units: 4480 (W7800) versus 1792 (W6600)
• TMUs: 280 (W7800) versus 112 (W6600)
• ROPs: 128 (W7800) versus 64 (W6600)
• RT Cores: 70 (W7800) versus 28 (W6600)
• Pixel Rate: 323.2 GPixel/s (W7800) versus 165.1 GPixel/s (W6600)
• Texture Rate: 707.0 GTexel/s (W7800) versus 289.0 GTexel/s (W6600)
• FP32 Performance: 45.25 TFLOPS (W7800) versus 9.247 TFLOPS (W6600)
• FP16 Performance: 90.50 TFLOPS (W7800) versus 18.49 TFLOPS (W6600)
• TDP: 260 W (W7800) versus 100 W (W6600)
• Slot Width: Dual-slot (W7800) versus Single-slot (W6600)
• Power Connectors: 2x 8-pin (W7800) versus 1x 6-pin (W6600)
• Suggested PSU: 600 W (W7800) versus 300 W (W6600)
• Bus Interface: PCIe 4.0 x16 (W7800) versus PCIe 4.0 x8 (W6600)
• Display Outputs: 3x DisplayPort 2.1, 1x mini-DisplayPort 2.1 (W7800) versus 4x DisplayPort 1.4a (W6600)
• Dimensions: 280 mm length (W7800) versus 241 mm length (W6600)
• Production Status: Active (W7800) versus End-of-life (W6600)
• Release Date: 2023-04-12 (W7800) versus 2021-06-07 (W6600)