AMD Radeon Pro W6800X Duo vs NVIDIA Quadro P6000 Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive performance gap between the AMD Radeon Pro W6800X Duo and the NVIDIA Quadro P6000, with the AMD part winning both head-to-head benchmark comparisons. In Geekbench OpenCL, the AMD Radeon Pro W6800X Duo scores 124,335 against the NVIDIA Quadro P6000's 66,382, a delta of 87.3% in favor of the AMD card. That is not a marginal lead; it is a near-doubling of raw compute throughput in a general-purpose compute workload.

The Geekbench Vulkan result tells a similar story, though with a slightly narrower margin. The AMD Radeon Pro W6800X Duo posts 125,622, while the NVIDIA Quadro P6000 manages 73,590. The delta here is 70.7%. Vulkan is a cross-platform graphics and compute API, and the AMD card's lead suggests its architecture handles modern API workloads with considerably more efficiency than the older Pascal design.

Looking at the aggregate benchmark average, the AMD Radeon Pro W6800X Duo sits at 135,774, placing it in the 96th percentile of all GPUs in the database. The NVIDIA Quadro P6000 averages 69,986, which lands it in the 90th percentile. Both are high-end parts by historical standards, but the gap between them is substantial: the AMD card's average score is roughly 94% higher than the NVIDIA card's average.

The nearest rivals for the AMD Radeon Pro W6800X Duo are all within a very tight cluster. The AMD Radeon PRO W6800 trails by just 0.3%, the NVIDIA A10M by 0.4%, the NVIDIA RTX 4000 Ada Generation by 0.4%, and the AMD Radeon PRO V620 actually leads by 0.5%. This tells us the W6800X Duo is positioned at the top of a crowded performance tier, where a few percentage points separate the leaders.

For the NVIDIA Quadro P6000, its nearest rivals include the AMD Radeon Pro WX 8200, which is 0.2% behind, and the NVIDIA RTX A3000 Mobile, which is 0.2% ahead. The AMD Radeon RX 6600 LE leads by 1.2%, and the NVIDIA CMP 90HX trails by 1.4%. The P6000's position in the 90th percentile means it is a solid performer, but it is competing in a lower tier than the AMD Radeon Pro W6800X Duo.

Where Each One Wins

The AMD Radeon Pro W6800X Duo wins in every recorded benchmark category. This is not a case of one card taking compute while the other takes graphics; the AMD part dominates both OpenCL and Vulkan. The OpenCL win of 87.3% is particularly telling. OpenCL is often used for heterogeneous compute tasks like rendering, physics simulation, and data processing. The AMD card's massive lead here suggests that any workload leveraging OpenCL will see transformative performance gains on the W6800X Duo.

The Vulkan win of 70.7% is relevant for graphics workloads, especially in modern game engines and real-time rendering applications that use Vulkan. The AMD Radeon Pro W6800X Duo also supports DirectX 12 Ultimate (12_2), while the NVIDIA Quadro P6000 supports only DirectX 12 (12_1). This means the AMD card is ready for features like ray tracing and mesh shaders, while the NVIDIA card predates those API extensions. The AMD part also features 60 ray accelerators, giving it dedicated hardware for ray-traced workloads, whereas the NVIDIA Quadro P6000 has no ray tracing cores at all.

The NVIDIA Quadro P6000 does not win any benchmark category in the head-to-head comparison. Its strengths lie elsewhere, primarily in its physical design and compatibility with existing infrastructure. The P6000 uses the PCIe 3.0 x16 bus interface, which is a standard that fits into virtually any workstation motherboard from the last decade. The AMD Radeon Pro W6800X Duo uses the Apple MPX interface, which is proprietary to Apple's Mac Pro and Mac Studio systems. This is a critical distinction: the NVIDIA card can be installed in a wide range of PC workstations, while the AMD card is locked into Apple's ecosystem.

The NVIDIA Quadro P6000 also has a dual-slot form factor and a single 8-pin power connector, drawing 250 W of power. The AMD Radeon Pro W6800X Duo is a quad-slot card with a 400 W TDP. For users with existing dual-slot expansion configurations or limited power headroom, the NVIDIA card is the more practical choice, even if it is slower.

FAQ

Q: Which card has the higher average benchmark score?

A: The AMD Radeon Pro W6800X Duo has an average benchmark score of 135,774, while the NVIDIA Quadro P6000 averages 69,986. The AMD card sits in the 96th percentile of all GPUs, while the NVIDIA card sits in the 90th percentile.

Q: How large is the performance gap in OpenCL?

A: The AMD Radeon Pro W6800X Duo scores 124,335 in Geekbench OpenCL, versus 66,382 for the NVIDIA Quadro P6000. This is a delta of 87.3% in favor of the AMD card.

Q: Does the NVIDIA Quadro P6000 support ray tracing?

A: No. The NVIDIA Quadro P6000 is based on the Pascal architecture and has no ray tracing cores. The AMD Radeon Pro W6800X Duo includes 60 ray accelerators and supports DirectX 12 Ultimate (12_2), which includes ray tracing features.

Q: What memory configurations do these cards have?

A: The AMD Radeon Pro W6800X Duo has 32 GB of GDDR6 memory on a 256-bit bus, yielding 512.0 GB/s of bandwidth. The NVIDIA Quadro P6000 has 24 GB of GDDR5X memory on a 384-bit bus, yielding 432.8 GB/s of bandwidth.

Q: How do the power requirements compare?

A: The AMD Radeon Pro W6800X Duo has a 400 W TDP and a suggested power supply of 800 W. The NVIDIA Quadro P6000 has a 250 W TDP and a suggested power supply of 600 W.

Q: Which card is more likely to fit into a standard PC workstation?

A: The NVIDIA Quadro P6000 uses the PCIe 3.0 x16 interface and is a dual-slot card, making it compatible with standard PC motherboards. The AMD Radeon Pro W6800X Duo uses the Apple MPX interface and is a quad-slot card, limiting it to Apple Mac Pro systems.

Specification Differences

The AMD Radeon Pro W6800X Duo and NVIDIA Quadro P6000 differ in nearly every hardware specification. The AMD card uses the Navi 21 chip with RDNA 2.0 architecture, built on a 7 nm process at TSMC. The NVIDIA card uses the GP102 chip with Pascal architecture, built on a 16 nm process, also at TSMC. The transistor counts reflect this process gap: the AMD chip has 26,800 million transistors on a 520 mm² die, while the NVIDIA chip has 11,800 million transistors on a 471 mm² die. The transistor density is 51.5M per mm² for AMD versus 25.1M per mm² for NVIDIA.

Clock speeds differ significantly. The AMD Radeon Pro W6800X Duo has a base clock of 1800 MHz and a boost clock of 1967 MHz. The NVIDIA Quadro P6000 has a base clock of 1506 MHz and a boost clock of 1645 MHz. Memory clocks also diverge: the AMD card runs its GDDR6 memory at 2000 MHz (16 Gbps effective), while the NVIDIA card runs its GDDR5X memory at 1127 MHz (9 Gbps effective).

Both cards have the same number of shading units (3840) and texture mapping units (240), but the AMD card has a higher pixel rate at 188.8 GPixel/s versus 157.9 GPixel/s for NVIDIA. The texture rate is 472.1 GTexel/s for AMD versus 394.8 GTexel/s for NVIDIA. The FP32 compute is 15.11 TFLOPS for AMD versus 12.63 TFLOPS for NVIDIA. The FP16 comparison is stark: the AMD card delivers 30.21 TFLOPS (2:1 ratio), while the NVIDIA card delivers just 197.4 GFLOPS (1:64 ratio), a 150-fold difference in half-precision throughput.

The physical specifications also differ. The AMD card is quad-slot with a 400 W TDP and a suggested 800 W power supply. The NVIDIA card is dual-slot with a 250 W TDP and a suggested 600 W power supply. The AMD card uses the Apple MPX bus interface, while the NVIDIA card uses PCIe 3.0 x16. Display outputs are 1x HDMI 2.1 and 4x Thunderbolt on the AMD card, versus 1x DVI and 4x DisplayPort 1.4a on the NVIDIA card. The AMD card is 267 mm long and 120 mm high, while the NVIDIA card is 267 mm long and 111 mm high.

Architecture Differences

The architectural gap between these two GPUs is generational. The AMD Radeon Pro W6800X Duo is built on RDNA 2.0, released in 2021, while the NVIDIA Quadro P6000 is built on Pascal, released in 2016. The five-year difference in release dates explains the process node advantage: 7 nm for AMD versus 16 nm for NVIDIA. This translates directly into the transistor density figures, with AMD packing more than double the transistors per square millimeter.

The AMD architecture includes 60 ray accelerators, which provide dedicated hardware for ray tracing calculations. The NVIDIA Pascal architecture has no equivalent hardware. The AMD card also supports DirectX 12 Ultimate (12_2), which includes features like variable rate shading and mesh shaders, while the NVIDIA card supports only DirectX 12 (12_1). Both cards support OpenGL 4.6 and Vulkan 1.4, so those APIs are not differentiators.

The FP16 capability is one of the most dramatic architectural differences. The AMD Radeon Pro W6800X Duo achieves 30.21 TFLOPS of FP16 performance via a 2:1 ratio, meaning it can process two half-precision operations per FP32 operation. The NVIDIA Quadro P6000 manages only 197.4 GFLOPS of FP16 with a 1:64 ratio, meaning it is severely crippled in half-precision workloads. This makes the AMD card vastly superior for AI inference, certain scientific computations, and other workloads that leverage FP16 arithmetic.

The memory subsystems diverge in both capacity and type. The AMD card uses 32 GB of GDDR6 on a 256-bit bus, while the NVIDIA card uses 24 GB of GDDR5X on a 384-bit bus. The wider bus on the NVIDIA card does not compensate for the slower memory technology: AMD achieves 512.0 GB/s of bandwidth versus NVIDIA's 432.8 GB/s. The AMD card also has a higher memory clock, running at 2000 MHz versus 1127 MHz.

The Verdict

The data is unambiguous: the AMD Radeon Pro W6800X Duo outperforms the NVIDIA Quadro P6000 in every recorded benchmark. The average score of 135,774 versus 69,986 places the AMD card in the 96th percentile and the NVIDIA card in the 90th percentile. For users who prioritize raw performance, particularly in OpenCL and Vulkan workloads, the AMD card is the clear choice.

The AMD Radeon Pro W6800X Duo also offers architectural advantages that matter for forward-looking workloads. Its 60 ray accelerators, DirectX 12 Ultimate support, and massive FP16 throughput make it suitable for ray-traced rendering, modern game development, and AI-related computations. The 32 GB of GDDR6 memory with 512.0 GB/s bandwidth provides ample capacity and speed for large datasets.

However, the NVIDIA Quadro P6000 remains relevant for a specific set of users. Its PCIe 3.0 x16 interface and dual-slot form factor allow it to be installed in standard PC workstations, whereas the AMD card requires an Apple MPX slot. The NVIDIA card also draws less power (250 W versus 400 W) and has a lower suggested power supply (600 W versus 800 W). For users with existing PC infrastructure, limited power budgets, or a need for DVI output, the NVIDIA card might be the only option that fits.

The launch MSRP of the AMD Radeon Pro W6800X Duo was 4,999 USD, while the NVIDIA Quadro P6000 launched at 5,999 USD. Both cards are end-of-life, so these figures are historical references. The performance gap, however, is current: the AMD card delivers nearly double the OpenCL performance of the NVIDIA card, and its Vulkan score is 70.7% higher. For any workload that can use the AMD card's hardware features, the choice is clear. For legacy systems that cannot accommodate the Apple MPX interface, the NVIDIA Quadro P6000 remains a functional, if dated, option.