AMD Radeon Pro W6600X vs NVIDIA Quadro P6000 Comparison

Head-to-Head Benchmarks

The benchmark comparison between these two cards is not a direct one-to-one affair, as they are measured using different test suites. The AMD Radeon Pro W6600X has a single recorded score from the Geekbench Metal test, while the NVIDIA Quadro P6000 has scores from both Geekbench OpenCL and Geekbench Vulkan. Because the database does not list a shared test for both cards, the head-to-head comparison relies on how each card positions against its own nearest rivals and the overall percentile rankings.

The AMD Radeon Pro W6600X posts a Geekbench Metal score of 107,342. This places it in the 94th percentile among all GPUs, which is a strong standing. Its nearest rivals in the database show a tight cluster: the AMD Radeon Pro Vega II Duo scores 106,750, a delta of 0.6% behind the W6600X, while the AMD Radeon Pro Vega II scores 109,617, which is 2.1% ahead. The AMD Radeon PRO W7900 scores 110,725, putting it 3.1% ahead. Notably, the NVIDIA Quadro RTX 6000 scores 101,872, meaning the W6600X is 5.4% ahead of that rival. This data shows that the W6600X is competitive with high-end workstation cards, but it does not top the group; it sits between the Vega II Duo and the Vega II.

The NVIDIA Quadro P6000, on the other hand, has an average benchmark score of 69,986 across its two recorded tests. Its Geekbench OpenCL score is 66,382, and its Geekbench Vulkan score is 73,590. The P6000 sits in the 90th percentile among all GPUs, which is lower than the W6600X's 94th percentile. The P6000's nearest rivals are also tightly packed: the AMD Radeon Pro WX 8200 scores 69,870 (0.2% behind), the NVIDIA RTX A3000 Mobile scores 70,140 (0.2% ahead), the AMD Radeon RX 6600 LE scores 70,829 (1.2% ahead), and the NVIDIA CMP 90HX scores 69,000 (1.4% behind). This places the P6000 in the middle of a very competitive group, with no single rival holding a decisive edge.

The biggest win for the W6600X is its percentile ranking and its Metal score, which is far higher than the P6000's average. The recorded data shows the W6600X outperforming the P6000 in raw score terms, but this is not an apples-to-apples comparison due to different APIs. The P6000's Vulkan score of 73,590 is its strongest recorded result, and it demonstrates capability in that API. However, the W6600X's Metal score of 107,342 is a substantial number, reflecting its optimized path in that specific test.

A critical observation from the database is that the W6600X has no OpenCL or Vulkan scores recorded, while the P6000 has no Metal score recorded. This means the database does not provide a direct cross-API comparison. The wins are therefore contextual: the W6600X shows a higher absolute score in its available test, and the P6000 shows a lower average but still holds its own among its own rival set.

Where Each One Wins

The AMD Radeon Pro W6600X wins in scenarios where the workload is Metal-based, which is relevant for macOS applications, given its bus interface of Apple MPX and its generation label "Radeon Pro Mac (Navi II Series)." Its 94th percentile standing indicates it is a top-tier performer in the database's overall ranking. The W6600X also wins on efficiency metrics: its thermal design power is 120 W, its suggested power supply is 300 W, and it has no external power connectors listed. This makes it a far less demanding card in terms of system power requirements.

The NVIDIA Quadro P6000 wins in memory capacity and bandwidth. It has 24 GB of GDDR5X memory on a 384-bit bus, yielding a bandwidth of 432.8 GB/s. This is a decisive advantage for large dataset workloads that exceed 8 GB, which is the W6600X's total memory capacity. The P6000 also has a wider memory bus and higher raw compute in some metrics: its FP32 performance is 12.63 TFLOPS versus the W6600X's 10.15 TFLOPS, and its texture rate is 394.8 GTexel/s versus 317.3 GTexel/s. The P6000 also has more shading units (3,840 versus 2,048), more texture mapping units (240 versus 128), and more render output units (96 versus 64).

The P6000 wins in display output flexibility. It provides 1x DVI and 4x DisplayPort 1.4a outputs, while the W6600X has no outputs listed. The P6000 also uses a standard PCIe 3.0 x16 interface, making it compatible with a wide range of PC motherboards, whereas the W6600X uses the Apple MPX interface, which limits its installation environment. The P6000 has a longer physical presence: its length is 267 mm (10.5 inches) and height is 111 mm (4.4 inches), but this is standard for a dual-slot card.

In terms of architecture, the W6600X wins on modern features. It supports DirectX 12 Ultimate (12_2), which includes ray tracing hardware via its 32 RT cores, and its FP16 performance is 20.31 TFLOPS with a 2:1 ratio, indicating strong half-precision compute. The P6000 lacks RT cores and has a very weak FP16 rate of 197.4 GFLOPS with a 1:64 ratio, making it unsuitable for workloads that rely on half-precision acceleration.

The Verdict

From the recorded data, the choice between these two cards depends entirely on the target platform and workload. The AMD Radeon Pro W6600X is the better pick for users on the Apple MPX interface, specifically Mac Pro systems, where its Metal performance and 94th percentile ranking make it a strong performer. Its 8 GB memory is sufficient for many professional tasks, but it is not for users who need to load very large models or textures. The W6600X also wins on power efficiency, with a 120 W TDP and a 300 W suggested power supply, which is a much lighter system load.

The NVIDIA Quadro P6000 is the better pick for users on standard PCIe platforms who need massive memory capacity and bandwidth. Its 24 GB GDDR5X memory and 432.8 GB/s bandwidth are unmatched in this comparison, and its 12.63 TFLOPS FP32 performance is higher than the W6600X. The P6000 is a Pascal-era card, so it lacks ray tracing and modern API features like DirectX 12 Ultimate, but it supports DirectX 12 (12_1) and Vulkan 1.4. Its 90th percentile ranking is respectable, though lower than the W6600X.

For a user who prioritizes raw compute and memory capacity on a PC, the P6000 is the data-backed choice. For a user on a Mac MPX system who prioritizes Metal performance and efficiency, the W6600X is clearly superior in the recorded metrics. The P6000's launch MSRP is 5,999 USD, while the W6600X's launch MSRP is 699 USD, but this analysis does not weigh price as a factor. The verdict is straightforward: platform compatibility and memory requirements dictate the winner.

FAQ

Q: Which card has the higher average benchmark score?

A: The AMD Radeon Pro W6600X has an average benchmark score of 107,342, while the NVIDIA Quadro P6000 has an average benchmark score of 69,986.

Q: What is the memory size difference between the two cards?

A: The AMD Radeon Pro W6600X has 8 GB of GDDR6 memory, while the NVIDIA Quadro P6000 has 24 GB of GDDR5X memory.

Q: Does the AMD Radeon Pro W6600X support ray tracing?

A: Yes, it has 32 RT cores and supports DirectX 12 Ultimate (12_2), which includes ray tracing features. The NVIDIA Quadro P6000 does not have RT cores.

Q: What is the power consumption difference?

A: The AMD Radeon Pro W6600X has a TDP of 120 W with a suggested power supply of 300 W. The NVIDIA Quadro P6000 has a TDP of 250 W with a suggested power supply of 600 W.

Q: Which card has more display outputs?

A: The NVIDIA Quadro P6000 has 1x DVI and 4x DisplayPort 1.4a outputs. The AMD Radeon Pro W6600X has no display outputs listed.

Q: What is the process node for each card?

A: The AMD Radeon Pro W6600X uses a 7 nm process with a die size of 237 mm². The NVIDIA Quadro P6000 uses a 16 nm process with a die size of 471 mm².

Architecture Differences

The AMD Radeon Pro W6600X is built on the RDNA 2.0 architecture, using the Navi 23 chip, and belongs to the "Radeon Pro Mac (Navi II Series)" generation. It is fabricated on a 7 nm process at TSMC, with 11,060 million transistors on a 237 mm² die, giving a transistor density of 46.7 million per mm². This modern architecture brings support for DirectX 12 Ultimate (12_2), Vulkan 1.4, and OpenGL 4.6. It includes 32 dedicated ray tracing cores, which is a significant feature absent from the P6000. The FP16 compute rate is 20.31 TFLOPS with a 2:1 ratio, meaning it can efficiently handle half-precision workloads.

The NVIDIA Quadro P6000 is built on the older Pascal architecture, using the GP102 chip, and belongs to the "Quadro Pascal (Px000)" generation. It is fabricated on a 16 nm process at TSMC, with 11,800 million transistors on a 471 mm² die, giving a transistor density of 25.1 million per mm². Pascal lacks ray tracing and tensor cores, and its FP16 performance is severely limited at 197.4 GFLOPS with a 1:64 ratio, which means half-precision compute is effectively a fraction of its FP32 rate. The P6000 supports DirectX 12 (12_1), which is an earlier version of the API, but it does support Vulkan 1.4 and OpenGL 4.6.

The architectural gap is clear: the W6600X is a modern GPU with feature-based advantages, while the P6000 is a larger, older chip that relies on brute-force compute and memory bandwidth. The transistor counts are similar, but the W6600X achieves this on a much smaller die due to the 7 nm process. The W6600X also has a higher pixel rate (158.7 GPixel/s versus 157.9 GPixel/s for the P6000), despite having fewer ROPs (64 versus 96), which reflects the efficiency of the RDNA 2.0 design.

Specification Differences

The most notable specification differences between the two cards are in memory and interface. The AMD Radeon Pro W6600X has 8 GB of GDDR6 memory on a 128-bit bus, with a bandwidth of 256.0 GB/s. The NVIDIA Quadro P6000 has 24 GB of GDDR5X memory on a 384-bit bus, with a bandwidth of 432.8 GB/s. The P6000 offers three times the memory capacity and 1.7 times the bandwidth.

Clock speeds differ as well. The W6600X has a base clock of 2068 MHz and a boost clock of 2479 MHz, with memory running at 2000 MHz (16 Gbps effective). The P6000 has a base clock of 1506 MHz and a boost clock of 1645 MHz, with memory at 1127 MHz (9 Gbps effective). The W6600X runs at higher clocks, which helps it achieve its performance despite a narrower memory bus.

Compute unit counts differ: the W6600X has 2,048 shading units, 128 TMUs, and 64 ROPs. The P6000 has 3,840 shading units, 240 TMUs, and 96 ROPs. The P6000 has nearly double the shading units and TMUs, which explains its higher texture rate (394.8 GTexel/s versus 317.3 GTexel/s) and FP32 throughput (12.63 TFLOPS versus 10.15 TFLOPS).

Power and physical requirements also differ. The W6600X has a 120 W TDP, no power connectors listed, and a 300 W suggested power supply. The P6000 has a 250 W TDP, requires a single 8-pin power connector, and a 600 W suggested power supply. The bus interface differs: the W6600X uses Apple MPX, while the P6000 uses PCIe 3.0 x16. The P6000 has display outputs (1x DVI, 4x DisplayPort 1.4a), while the W6600X has none. Release dates also differ: the W6600X launched on 2021-08-02, while the P6000 launched on 2016-09-30.