AMD Radeon PRO W6600 vs AMD Radeon PRO W7700 Comparison

The AMD Radeon PRO W7700 and AMD Radeon PRO W6600 represent two distinct generations of AMD’s professional workstation lineup, and the benchmark data shows a decisive performance gap between them. In the two shared tests, the W7700 wins both, with its largest advantage appearing in the Vulkan API. The average benchmark score for the W7700 is 118,976, placing it in the 95th percentile of all GPUs, while the W6600 averages 81,995, sitting in the 92nd percentile. This page breaks down the head-to-head results, architectural differences, and practical implications of these numbers.

Head-to-Head Benchmarks

The Geekbench OpenCL test shows the W7700 scoring 108,245 against the W6600’s 73,514. That is a 47.2% delta in favor of the newer card. This is a substantial margin, indicating that compute-heavy workloads running through OpenCL will see a near-50% improvement in raw score. The W7700’s average benchmark score of 118,976 is also 45.1% higher than the W6600’s 81,995, which aligns with the OpenCL gap. In the Vulkan test, the difference grows even larger. The W7700 posts 129,706, while the W6600 manages 78,428, resulting in a 65.4% delta. This suggests the W7700’s architectural improvements are particularly effective in Vulkan-based rendering and compute tasks.

When looking at the W7700’s position among its nearest rivals, its average score of 118,976 puts it 1.3% ahead of the NVIDIA GB10 (117,393) and 1.6% ahead of the NVIDIA RTX 4000 SFF Ada Generation (117,088). It is also 4% ahead of the NVIDIA Tesla V100 SXM2 16 GB (114,395) and 4.4% ahead of the NVIDIA RTX A5500 Mobile (113,944). These are narrow margins, meaning the W7700 is competitively positioned against those specific NVIDIA parts. For the W6600, its average score of 81,995 is 1.3% ahead of the AMD Radeon Pro Vega 64X (80,959) and 2.7% ahead of the NVIDIA GeForce RTX 5090 (79,842). It also leads the NVIDIA Tesla P100 PCIe 16 GB (79,605) by 3% and the Tesla P100 PCIe 12 GB (79,396) by 3.3%.

The head-to-head data shows no tests where the W6600 wins. The W7700 takes both available benchmarks, giving it 2 wins to the W6600’s 0. The 65.4% Vulkan delta is particularly telling, as it nearly doubles the 47.2% OpenCL gap. This pattern suggests that the W7700’s newer architecture scales better with Vulkan’s lower-level overhead, whereas the OpenCL results, while still strongly favoring the W7700, show a comparatively smaller generational improvement.

Architecture Differences

The core architectural split comes down to RDNA 3.0 versus RDNA 2.0. The W7700 uses the Navi 32 chip on a 5 nm TSMC process, while the W6600 uses Navi 23 on a 7 nm TSMC process. This node shrink allows the W7700 to pack 28,100 million transistors into a 346 mm² die, yielding a transistor density of 81.2 million per mm². The W6600, by contrast, has 11,060 million transistors on a 237 mm² die, for a density of 46.7 million per mm². That is a 2.54x increase in transistor count and a 1.74x increase in density for the newer part.

Memory configurations differ significantly. The W7700 offers 16 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, with 224.0 GB/s. That is double the memory capacity and 2.57x the bandwidth. The W7700’s memory clock runs at 2250 MHz (18 Gbps effective), while the W6600’s runs at 1750 MHz (14 Gbps effective). These memory differences directly impact throughput in large dataset workloads.

Compute resources also scale upward. The W7700 has 3072 shading units, 192 texture mapping units (TMUs), and 96 render output units (ROPs). The W6600 has 1792 shading units, 112 TMUs, and 64 ROPs. Ray tracing cores increase from 28 on the W6600 to 48 on the W7700. Pixel rate jumps from 165.1 GPixel/s to 249.6 GPixel/s, and texture rate from 289.0 GTexel/s to 499.2 GTexel/s. FP32 performance is 31.95 TFLOPS on the W7700 versus 9.247 TFLOPS on the W6600, a 3.45x increase. FP16 performance follows the same 2:1 ratio, with 63.90 TFLOPS versus 18.49 TFLOPS.

Power and physical specs also differ. The W7700 has a 190 W TDP and requires a single 8-pin power connector, with a suggested 450 W PSU. It is a dual-slot card. The W6600 has a 100 W TDP, a single 6-pin connector, a suggested 300 W PSU, and is single-slot. Both cards are 241 mm in length, but the W7700 is 111 mm tall while the W6600’s height is not specified. The W7700 uses PCIe 4.0 x16, while the W6600 uses PCIe 4.0 x8. Display outputs differ too: the W7700 has 4x DisplayPort 2.1, while the W6600 has 4x DisplayPort 1.4a. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The W7700 was released on 2023-11-12, while the W6600 came out on 2021-06-07. The W6600 is marked as end-of-life, while the W7700’s production status is not listed.

FAQ

Q: How much faster is the W7700 in OpenCL?

A: The W7700 scores 108,245 in Geekbench OpenCL, which is 47.2% higher than the W6600’s 73,514.

Q: What is the biggest performance gap between the two cards?

A: The largest delta is in Geekbench Vulkan, where the W7700’s 129,706 score is 65.4% ahead of the W6600’s 78,428.

Q: Does the W6600 win any benchmark in the head-to-head comparison?

A: No. The data shows 0 wins for the W6600 and 2 wins for the W7700 across the shared tests.

Q: How does the W7700 compare to its nearest rival, the NVIDIA GB10?

A: The W7700’s average score of 118,976 is 1.3% higher than the GB10’s 117,393.

Q: What is the memory bandwidth difference?

A: The W7700 has 576.0 GB/s of bandwidth, while the W6600 has 224.0 GB/s.

Q: Are both cards the same physical length?

A: Yes, both are 241 mm long, but the W7700 is dual-slot while the W6600 is single-slot.

The Verdict

The benchmark data is unambiguous: the W7700 outperforms the W6600 in every measured test. For users choosing between these two, the W7700 offers a 47.2% advantage in OpenCL and a 65.4% advantage in Vulkan. Its average score of 118,976 versus 81,995 represents a 45.1% overall lead. The W7700 also doubles the memory capacity to 16 GB and more than doubles bandwidth to 576.0 GB/s. The W6600’s only advantages are in power and physical footprint: a 100 W TDP versus 190 W, single-slot versus dual-slot, and a 300 W suggested PSU versus 450 W.

The W7700’s 5 nm process and newer RDNA 3.0 architecture deliver 3.45x the FP32 throughput, which explains the large benchmark deltas. The W6600, being end-of-life, represents an older design that is still competitive in the 92nd percentile, but it cannot match the W7700’s 95th percentile standing. The W7700 also holds a narrow lead over several NVIDIA rivals, sitting 1.3% above the GB10 and 1.6% above the RTX 4000 SFF Ada Generation. The W6600, meanwhile, leads the RTX 5090 by 2.7%, a less relevant comparison given the W7700’s superior positioning.

For any workload that benefits from higher compute throughput, larger memory, or faster bandwidth, the W7700 is the clear choice. The W6600 is only preferable in scenarios where power draw and slot width are the primary constraints, as it uses 90 W less and occupies one slot instead of two. The data does not support any performance-based reason to pick the W6600.

Specification Differences

The two cards differ in nearly every major specification. The W7700 uses a 5 nm process, while the W6600 uses 7 nm. Transistor count is 28,100 million versus 11,060 million. Die size is 346 mm² versus 237 mm². Base clock is 1900 MHz on the W7700 versus 2331 MHz on the W6600, though boost clocks are close at 2600 MHz versus 2580 MHz. Memory clock is 2250 MHz versus 1750 MHz. Memory size is 16 GB versus 8 GB, with bus widths of 256-bit versus 128-bit and bandwidth of 576.0 GB/s versus 224.0 GB/s. Shading units are 3072 versus 1792, TMUs are 192 versus 112, and ROPs are 96 versus 64. Ray tracing cores are 48 versus 28. Pixel rate is 249.6 GPixel/s versus 165.1 GPixel/s, and texture rate is 499.2 GTexel/s versus 289.0 GTexel/s. FP32 is 31.95 TFLOPS versus 9.247 TFLOPS, and FP16 is 63.90 TFLOPS versus 18.49 TFLOPS. TDP is 190 W versus 100 W. Power connectors are 1x 8-pin versus 1x 6-pin. Suggested PSU is 450 W versus 300 W. Bus interface is PCIe 4.0 x16 versus x8. Display outputs are 4x DisplayPort 2.1 versus 4x DisplayPort 1.4a. The W7700 is dual-slot, the W6600 is single-slot. Both are 241 mm long. The W7700’s launch MSRP is 999 USD, while the W6600’s launch MSRP is 649 USD.

Where Each One Wins

The W7700 wins in all compute benchmarks. Its FP32 performance of 31.95 TFLOPS is over three times the W6600’s 9.247 TFLOPS, making it the superior choice for GPU-accelerated rendering, simulation, and machine learning inference. The 16 GB memory capacity and 576.0 GB/s bandwidth allow it to handle larger textures, bigger datasets, and higher-resolution workloads without hitting memory ceilings. The 48 ray tracing cores versus 28 provide more headroom for ray-traced workflows. The 4x DisplayPort 2.1 outputs support newer display standards compared to the W6600’s DisplayPort 1.4a.

The W6600 wins in power efficiency and physical integration. Its 100 W TDP means it draws 90 W less than the W7700, and its single-slot design fits into chassis with tighter space constraints. The 300 W suggested PSU requirement is lower, making it easier to integrate into existing systems with smaller power supplies. Its PCIe 4.0 x8 interface uses fewer lanes, which may be a consideration in systems with limited PCIe bandwidth. The W6600 is also end-of-life, which may affect availability, but for workloads that are memory-light and compute-moderate, its 8 GB and 224.0 GB/s bandwidth may be sufficient, especially given its lower power footprint.

For users who prioritize raw performance, the W7700 wins every benchmark and every major specification category. For users who prioritize power draw, slot space, and PSU requirements, the W6600 is the only option that meets those constraints. The data shows no scenario where the W6600 outpaces the W7700 in speed, but it does show a clear trade-off between performance and power consumption.