AMD Radeon Pro W6600X vs AMD Radeon PRO W7700 Comparison

AMD Radeon PRO W7700 and AMD Radeon Pro W6600X represent two distinct generations of AMD’s professional graphics lineup, separated by roughly two years of architectural evolution. The W7700, built on the RDNA 3.0 architecture with a Navi 32 chip, is the newer and more powerful part, while the W6600X, based on RDNA 2.0 with Navi 23, was designed specifically for Apple Mac systems. The data shows a clear performance hierarchy between the two, but the W6600X also demonstrates that older RDNA 2 silicon can still hold its ground in specific workloads. This analysis walks through the benchmark results, architectural divergences, and practical implications for professional users.

Head-to-Head Benchmarks

The benchmark data presents a direct comparison through average scores, though the two cards were tested under different API conditions. The AMD Radeon PRO W7700 achieves an average benchmark score of 118,976, while the AMD Radeon Pro W6600X sits at 107,342. This translates to a 10.8% advantage for the W7700 in overall compute performance. However, the W6600X’s score comes exclusively from a Geekbench Metal test, whereas the W7700’s average is derived from OpenCL and Vulkan results. This API disparity is worth noting, as Metal is Apple’s proprietary graphics API, and the W6600X is a Mac-specific product.

Looking at the W7700’s individual results, it scores 108,245 in Geekbench OpenCL and 129,706 in Geekbench Vulkan. The Vulkan score is notably higher, indicating that the card’s RDNA 3.0 architecture scales particularly well with cross-platform graphics workloads. The W6600X’s single Metal score of 107,342 is close to the W7700’s OpenCL result, suggesting that in Apple-centric environments, the older card remains competitive. When comparing the two cards directly, the W7700 leads by 11,634 points in raw average score, but the W6600X’s Metal performance demonstrates that API optimization can narrow the gap.

The nearest rival data provides additional context. The W7700’s closest competitor is the NVIDIA GB10, which scores 117,393, a mere 1.3% behind. The NVIDIA RTX 4000 SFF Ada Generation is 1.6% behind at 117,088, and the NVIDIA Tesla V100 SXM2 16 GB trails by 4% at 114,395. For the W6600X, the AMD Radeon Pro Vega II Duo is 0.6% ahead at 106,750, while the AMD Radeon Pro Vega II is 2.1% ahead at 109,617. The AMD Radeon PRO W7900, a much higher-tier card, is 3.1% ahead at 110,725, and the NVIDIA Quadro RTX 6000 is 5.4% behind at 101,872. These figures show that the W7700 sits in a competitive mid-range position, whereas the W6600X is narrowly bracketed by older Vega-based workstations.

In terms of percentile ranking, the W7700 places in the 95th percentile of all GPUs, while the W6600X is in the 94th percentile. This is a slim 1% difference, indicating that despite the performance gap, both cards belong to the upper echelon of graphics hardware. The practical implication is that users upgrading from the W6600X to the W7700 gain roughly 11% in average compute performance, but the W6600X is by no means obsolete for its intended Mac ecosystem.

FAQ

Q: How much faster is the AMD Radeon PRO W7700 than the AMD Radeon Pro W6600X in average benchmark scores?

A: The W7700 has an average benchmark score of 118,976, while the W6600X scores 107,342. This represents a 10.8% advantage for the W7700.

Q: Does the W6600X have any benchmark where it outperforms the W7700?

A: No direct head-to-head benchmark results are provided. However, the W6600X’s Geekbench Metal score of 107,342 is close to the W7700’s Geekbench OpenCL score of 108,245, showing the W6600X is competitive in Apple-specific Metal workloads.

Q: What are the nearest rivals for each card based on average score?

A: For the W7700, the nearest rival is the NVIDIA GB10 at 117,393 (1.3% behind). For the W6600X, the AMD Radeon Pro Vega II Duo at 106,750 is 0.6% ahead, while the AMD Radeon Pro Vega II is 2.1% ahead at 109,617.

Q: How do the two cards compare in percentile ranking among all GPUs?

A: The W7700 ranks in the 95th percentile, while the W6600X ranks in the 94th percentile. Both are within the top 6% of all GPUs.

Q: Which card has a higher memory bandwidth?

A: The W7700 has a memory bandwidth of 576.0 GB/s, while the W6600X has 256.0 GB/s. The W7700’s bandwidth is more than double that of the W6600X.

Q: Is there a difference in the number of ray tracing cores?

A: Yes. The W7700 has 48 ray tracing cores, whereas the W6600X has 32 ray tracing cores, a 50% increase for the W7700.

Where Each One Wins

The AMD Radeon PRO W7700 wins decisively in raw compute throughput across multiple metrics. Its FP32 performance is 31.95 TFLOPS, compared to the W6600X’s 10.15 TFLOPS, a threefold advantage. The texture rate follows a similar pattern, with the W7700 achieving 499.2 GTexel/s versus 317.3 GTexel/s for the W6600X. The pixel rate is also higher on the W7700 at 249.6 GPixel/s, while the W6600X manages 158.7 GPixel/s. Memory bandwidth is a standout difference, as the W7700’s 576.0 GB/s dwarfs the W6600X’s 256.0 GB/s, which is critical for large dataset workloads like 3D rendering or scientific simulation.

The W6600X wins in efficiency-oriented scenarios. Its TDP is 120 W, compared to the W7700’s 190 W, making it a more power-conscious option for constrained environments. The W6600X also has a higher base clock at 2068 MHz versus 1900 MHz for the W7700, though the boost clock is lower at 2479 MHz versus 2600 MHz. For Mac users, the W6600X is the only relevant choice here, as it uses the Apple MPX bus interface and has no display outputs, indicating it is designed to work inside a Mac Pro chassis where the system handles display output. The W7700, with its 4x DisplayPort 2.1 outputs and PCIe 4.0 x16 interface, is a standard workstation card for PC-based workflows.

In terms of product lifecycle, the W6600X is marked as end-of-life, while the W7700 has no such status. This suggests the W6600X is a legacy product, but its Metal benchmark score of 107,342 shows it can still handle professional Mac workloads effectively. The W7700, with its newer architecture and higher compute figures, is clearly the better choice for performance-intensive tasks outside the Apple ecosystem.

Specification Differences

The most glaring specification difference is memory capacity and bandwidth. The W7700 offers 16 GB of GDDR6 memory on a 256-bit bus, delivering 576.0 GB/s, whereas the W6600X has 8 GB of GDDR6 on a 128-bit bus, providing 256.0 GB/s. This doubles the memory capacity and more than doubles the bandwidth for the W7700, which is essential for handling larger textures and datasets.

The compute units also differ significantly. The W7700 has 3072 shading units, 192 texture mapping units, and 96 raster operation units. The W6600X has 2048 shading units, 128 TMUs, and 64 ROPs. This represents a 50% increase in each category for the W7700. Ray tracing cores follow suit, with the W7700 featuring 48 RT cores versus 32 on the W6600X.

Clock speeds are mixed. The W7700 has a base clock of 1900 MHz and a boost clock of 2600 MHz, while the W6600X has a higher base clock of 2068 MHz but a lower boost clock of 2479 MHz. Memory clocks also differ, with the W7700 running at 2250 MHz (18 Gbps effective) and the W6600X at 2000 MHz (16 Gbps effective).

Power and physical specifications diverge. The W7700 has a TDP of 190 W and requires a 450 W power supply, while the W6600X has a TDP of 120 W and a 300 W suggested PSU. The W7700 uses a single 8-pin power connector, whereas the W6600X has none documented. The W7700 measures 241 mm in length and 111 mm in height, while the W6600X lacks listed dimensions. The bus interface is PCIe 4.0 x16 for the W7700 and Apple MPX for the W6600X. Display outputs are entirely different: the W7700 has 4x DisplayPort 2.1, while the W6600X has no outputs.

The launch MSRP for the W7700 is 999 USD, and for the W6600X it is 699 USD. This price difference of 300 USD is notable, but the performance gap in compute units and memory is substantial.

Architecture Differences

The architectural divide is generational. The W7700 is built on RDNA 3.0 with the Navi 32 chip, codenamed Wheat Nas, while the W6600X uses RDNA 2.0 with the Navi 23 chip. The process node improves from 7 nm on the W6600X to 5 nm on the W7700, both fabricated by TSMC. This shrink allows the W7700 to pack 28,100 million transistors on a 346 mm² die, giving a transistor density of 81.2M per mm². The W6600X has 11,060 million transistors on a 237 mm² die, with a density of 46.7M per mm². This is a 2.5x increase in transistor count and a 74% higher density for the W7700, enabling its superior compute performance.

The generation naming reflects their target platforms. The W7700 belongs to the Radeon Pro Navi (Navi III Series), while the W6600X is part of the Radeon Pro Mac (Navi II Series). The W6600X’s codename is null, and its predecessor is also null, indicating it was a standalone product for Apple’s Mac Pro. The W7700’s predecessor is listed as Radeon Pro Vega, showing a direct lineage from Vega-based workstation cards.

Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API compatibility is identical. However, the W6600X’s benchmark only includes Geekbench Metal, while the W7700 has OpenCL and Vulkan results, highlighting the W6600X’s focus on Apple’s Metal API. The W7700 also has a higher FP16 performance of 63.90 TFLOPS (2:1) versus 20.31 TFLOPS (2:1) on the W6600X, which is relevant for mixed-precision workloads.

The release dates differ by over two years, with the W7700 launching on 2023-11-12 and the W6600X on 2021-08-02. The W6600X is already end-of-life, while the W7700 has no production status listed, suggesting it is still an active product.

The Verdict

The data makes a clear case for the AMD Radeon PRO W7700 as the superior performer in almost every measurable way. Its 16 GB memory, 576.0 GB/s bandwidth, and 31.95 TFLOPS FP32 throughput are roughly three times the W6600X’s capabilities. The 50% increase in shading units, TMUs, ROPs, and ray tracing cores means the W7700 is better suited for modern professional workloads like real-time ray tracing, high-resolution rendering, and large-scale data processing. The 95th percentile ranking versus the W6600X’s 94th percentile further solidifies its position, though the gap is narrow enough that the W6600X is not a slouch.

For users building a PC workstation, the W7700 is the obvious choice, given its PCIe 4.0 x16 interface, DisplayPort 2.1 outputs, and standard 8-pin power connector. It offers a 10.8% average benchmark advantage over the W6600X, and its nearest rivals are within a 1.3% to 4.4% range, indicating it is competitive with NVIDIA’s mid-range professional cards.

The W6600X, however, serves a niche audience: Apple Mac Pro users. Its Apple MPX bus interface and lack of display outputs make it a card designed exclusively for Mac systems, where its Metal score of 107,342 is respectable. For those already invested in the Mac ecosystem, the W6600X is a capable card, especially given its lower 120 W TDP and 300 W PSU requirement. But its end-of-life status and 8 GB memory cap limit its future-proofing.

The verdict is straightforward: choose the W7700 for maximum performance and flexibility across PC platforms, or select the W6600X if you need a Mac-compatible card and accept its lower compute ceiling. The W7700’s 999 USD launch MSRP versus the W6600X’s 699 USD launch MSRP reflects the performance tier, but the W7700’s advantages in memory, bandwidth, and compute units justify the premium for professional workloads.