AMD Radeon Pro W6900X vs NVIDIA Quadro P6000 Comparison

Head-to-Head Benchmarks

The benchmark database shows a decisive performance gap between the AMD Radeon Pro W6900X and the NVIDIA Quadro P6000, with the AMD card winning both recorded head-to-head tests. In the Geekbench OpenCL test, the W6900X scores 130,035 against the P6000's 66,382, a 95.9% advantage. This is nearly double the compute output in a general-purpose GPU workload, confirming that the newer architecture delivers substantially more raw throughput per clock and per watt.

The Geekbench Vulkan test shows an even wider margin. The W6900X posts 148,865, while the P6000 manages 73,590, giving AMD a 102.3% lead. Crossing the 100% threshold means the Radeon card is more than twice as fast in this API, which is significant for any workload that can leverage Vulkan's modern execution model. The P6000, despite being a capable professional card in its generation, simply cannot keep pace with the architectural advances baked into the W6900X.

Looking at the broader benchmark context, the W6900X holds an average benchmark score of 168,574 across all recorded tests, placing it in the 97th percentile of all GPUs in the database. The P6000, by contrast, averages 69,986 and sits at the 90th percentile. The delta between these two averages is roughly 141%, indicating that the gap seen in individual tests is consistent across the full suite of measurements.

The nearest rivals for each card further contextualize these results. The W6900X's closest competitor is the NVIDIA RTX 4500 Ada Generation with an average score of 166,094, a mere 1.5% behind. The NVIDIA RTX A5500 follows at 165,217 (2% behind), and the AMD Radeon PRO W7800 sits at 164,894 (2.2% behind). This shows the W6900X is comfortably at the top of its peer group, with no rival within spitting distance. The P6000's nearest rivals tell a different story: the AMD Radeon Pro WX 8200 scores 69,870, just 0.2% behind, and the NVIDIA RTX A3000 Mobile is 0.2% ahead at 70,140. The P6000 is essentially trading blows with mid-range mobile and workstation parts from a later generation.

Architecture Differences

The two cards come from fundamentally different design philosophies and eras. The AMD Radeon Pro W6900X is built on the Navi 21 chip using the RDNA 2.0 architecture, manufactured on a 7 nm process at TSMC. The NVIDIA Quadro P6000 uses the GP102 chip with the Pascal architecture, built on a 16 nm process, also at TSMC. The process node difference is substantial: 7 nm versus 16 nm, which directly impacts transistor density and power efficiency.

The transistor counts reflect this. The W6900X packs 26,800 million transistors into a 520 mm² die, yielding a density of 51.5 million transistors per square millimeter. The P6000 has 11,800 million transistors on a 471 mm² die, a density of 25.1 million per square millimeter. The AMD chip crams more than twice the transistors into roughly the same physical footprint, which explains much of its performance advantage.

Memory configurations follow suit. The W6900X offers 32 GB of GDDR6 on a 256-bit bus, delivering 512.0 GB/s of bandwidth. The P6000 has 24 GB of GDDR5X on a wider 384-bit bus, but only reaches 432.8 GB/s. Despite the narrower bus, the newer GDDR6 memory at 16 Gbps effective speed outpaces the older GDDR5X at 9 Gbps.

Compute resources are heavily skewed toward AMD. The W6900X has 5,120 shading units, 320 texture mapping units, and 128 ROPs. It also includes 80 ray tracing cores, a feature entirely absent from the Pascal-based P6000. The P6000 counters with 3,840 shading units, 240 TMUs, and 96 ROPs. The W6900X achieves 22.23 TFLOPS of FP32 compute and 44.46 TFLOPS of FP16 with a 2:1 ratio. The P6000 manages 12.63 TFLOPS of FP32 but only 197.4 GFLOPS of FP16, a 1:64 ratio that makes half-precision work essentially impractical.

Clock speeds further separate the two. The W6900X runs at 1825 MHz base and 2171 MHz boost. The P6000's base is 1506 MHz with a 165 MHz boost to 1645 MHz. These figures, combined with the architectural IPC improvements of RDNA 2.0 over Pascal, explain the pixel rate difference: 277.9 GPixel/s for AMD versus 157.9 GPixel/s for NVIDIA. Texture rate is 694.7 GTexel/s versus 394.8 GTexel/s.

FAQ

Q: Which card has the higher average benchmark score? A: The AMD Radeon Pro W6900X averages 168,574 across all recorded tests, placing it in the 97th percentile of all GPUs. The NVIDIA Quadro P6000 averages 69,986, sitting at the 90th percentile.

Q: Does the NVIDIA Quadro support ray tracing? A: No. The P6000's Pascal architecture has no ray tracing cores. The AMD Radeon Pro W6900X includes 80 ray tracing cores as part of RDNA 2.0, supporting DirectX 12 Ultimate (12_2).

Q: How does memory bandwidth compare between the two cards? A: The W6900X delivers 512.0 GB/s from 32 GB of GDDR6 on a 256-bit bus. The P6000 delivers 432.8 GB/s from 24 GB of GDDR5X on a 384-bit bus. The W6900X memory clock is 2000 MHz at 16 Gbps effective, while the P6000 runs at 1127 MHz at 9 Gbps effective.

Q: What is the TDP difference between the two cards? A: The W6900X has a 300 W TDP, and the P6000 has a 250 W TDP. The suggested PSU is 700 W for the AMD card and 600 W for the NVIDIA card.

Q: Which card supports Vulkan 1.4? A: Both cards support Vulkan 1.4. Both also support OpenGL 4.6. The W6900X supports DirectX 12 Ultimate (12_2), while the P6000 supports DirectX 12 (12_1).

Q: What are the release dates for these cards? A: The AMD Radeon Pro W6900X was released on 2021-08-02. The NVIDIA Quadro P6000 was released on 2016-09-30.

Specification Differences

| Specification | AMD Radeon Pro W6900X | NVIDIA Quadro P6000 |

|---|---|---|

| Architecture | RDNA 2.0 | Pascal |

| Chip | Navi 21 | GP102 |

| Process Node | 7 nm | 16 nm |

| Transistors | 26,800 million | 11,800 million |

| Die Size | 520 mm² | 471 mm² |

| Transistor Density | 51.5M / mm² | 25.1M / mm² |

| Base Clock | 1825 MHz | 1506 MHz |

| Boost Clock | 2171 MHz | 1645 MHz |

| Memory Clock | 2000 MHz, 16 Gbps effective | 1127 MHz, 9 Gbps effective |

| Memory Size | 32 GB | 24 GB |

| Memory Type | GDDR6 | GDDR5X |

| Memory Bus Width | 256 bit | 384 bit |

| Memory Bandwidth | 512.0 GB/s | 432.8 GB/s |

| Shading Units | 5120 | 3840 |

| TMUs | 320 | 240 |

| ROPs | 128 | 96 |

| RT Cores | 80 | None |

| Pixel Rate | 277.9 GPixel/s | 157.9 GPixel/s |

| Texture Rate | 694.7 GTexel/s | 394.8 GTexel/s |

| FP32 | 22.23 TFLOPS | 12.63 TFLOPS |

| FP16 | 44.46 TFLOPS (2:1) | 197.4 GFLOPS (1:64) |

| TDP | 300 W | 250 W |

| Slot Width | Not specified | Dual-slot |

| Power Connectors | Not specified | 1x 8-pin |

| Suggested PSU | 700 W | 600 W |

| Bus Interface | Apple MPX | PCIe 3.0 x16 |

| Display Outputs | 1x HDMI 2.1, 4x Thunderbolt | 1x DVI, 4x DisplayPort 1.4a |

| DirectX | 12 Ultimate (12_2) | 12 (12_1) |

| Release Date | 2021-08-02 | 2016-09-30 |

| Predecessor | Not specified | Quadro Maxwell |

| Successor | Not specified | Quadro Volta |

| Launch MSRP | 5,999 USD | 5,999 USD |

Where Each One Wins

The AMD Radeon Pro W6900X is the clear winner in every recorded benchmark category. Its OpenCL score of 130,035 versus 66,382 represents a 95.9% advantage, making it the obvious choice for general-purpose compute workloads that leverage OpenCL. The Vulkan score of 148,865 versus 73,590, a 102.3% lead, cements its position for modern graphics APIs. The card also excels in memory-bound scenarios, with 512.0 GB/s of bandwidth versus 432.8 GB/s, and has 32 GB of memory versus 24 GB. The 80 ray tracing cores give it a hardware path for ray-traced workloads that the P6000 simply cannot execute. Its FP16 throughput of 44.46 TFLOPS versus 197.4 GFLOPS makes it dramatically better suited for AI and half-precision compute tasks.

The NVIDIA Quadro P6000 retains relevance in specific legacy contexts. Its 384-bit memory bus is wider than the W6900X's 256-bit bus, and its GDDR5X memory, while slower, is a proven technology. The PCIe 3.0 x16 interface is a standard form factor that works in conventional workstations, whereas the W6900X uses Apple MPX, which is proprietary to Apple's Mac Pro ecosystem. The P6000's display outputs include a DVI port and four DisplayPort 1.4a connections, which may be preferable for legacy display setups. Its lower TDP of 250 W versus 300 W means less heat generation and lower power supply requirements, with a 600 W suggested PSU versus 700 W. The card is also end-of-life, but so is the W6900X, so neither offers a future-proofing advantage.

The percentile data reinforces this split. The W6900X sits at the 97th percentile of all GPUs, meaning it outperforms 97% of the database. The P6000 sits at the 90th percentile, which is still respectable but indicates it has been surpassed by a significant portion of newer hardware.

The Verdict

The data points to a single conclusion: the AMD Radeon Pro W6900X is the superior GPU in almost every measurable way. It is more than twice as fast in Vulkan, nearly twice as fast in OpenCL, has more memory, higher bandwidth, more compute units, ray tracing support, and a newer manufacturing process. The 7 nm RDNA 2.0 architecture delivers 22.23 TFLOPS of FP32 performance and 44.46 TFLOPS of FP16, dwarfing the Pascal-based P6000's 12.63 TFLOPS and 197.4 GFLOPS respectively. The W6900X's 97th percentile ranking versus the P6000's 90th places them in different performance tiers entirely.

The only scenarios where the P6000 might be considered are those where the Apple MPX bus interface of the W6900X is a disqualifier. The W6900X is designed for Apple's Mac Pro, with 1x HDMI 2.1 and 4x Thunderbolt outputs. The P6000 uses standard PCIe 3.0 x16 and offers DVI plus DisplayPort 1.4a, making it compatible with a broader range of conventional PC workstations. However, even in those scenarios, the performance gap is so large that older Pascal-based cards are simply outclassed.

For users who need maximum compute throughput, ray tracing hardware, or half-precision performance, the AMD Radeon Pro W6900X is the only choice. For users constrained to legacy workstation systems with standard PCIe slots and older display connections, the Quadro P6000 remains a functional option, but the benchmark data shows it is operating at roughly half the performance level of its AMD counterpart. The verdict is unambiguous: the W6900X wins decisively on performance, and the P6000 only wins on compatibility with older platforms.