AMD Radeon Pro W6600M vs NVIDIA RTX A6000 Comparison

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon Pro W6600M has an average benchmark score of 61,896, while the NVIDIA RTX A6000 averages 44,075. Despite the A6000 winning both head-to-head tests, the W6600M holds a higher average across the database.

Q: How does the RTX A6000 perform in OpenCL compared to the W6600M?

A: The RTX A6000 scores 193,937 in Geekbench OpenCL, which is 71.1% higher than the W6600M's 56,140. This is the largest performance gap recorded between the two.

Q: What is the memory capacity difference between these two cards?

A: The RTX A6000 comes with 48 GB of GDDR6 memory on a 384-bit bus, whereas the W6600M has 8 GB of GDDR6 on a 128-bit bus. Memory bandwidth is 768.0 GB/s for the A6000 versus 224.0 GB/s for the W6600M.

Q: Which card has a higher pixel fill rate?

A: The RTX A6000 outputs 201.6 GPixel/s, while the W6600M reaches 130.2 GPixel/s. The A6000 leads by a significant margin in this metric.

Q: Are both cards still in production?

A: No. Both the AMD Radeon Pro W6600M and the NVIDIA RTX A6000 are listed as end-of-life products in the database.

Q: What is the transistor density of each chip?

A: The W6600M's Navi 23 chip has a density of 46.7M transistors per mm², while the A6000's GA102 has 45.1M per mm². The AMD part is slightly denser despite having far fewer total transistors.

Architecture Differences

The two GPUs come from different architectural generations and philosophies. The AMD Radeon Pro W6600M uses the RDNA 2.0 architecture, built on a 7 nm process at TSMC. The chip is called Navi 23, with 11,060 million transistors on a 237 mm² die. The NVIDIA RTX A6000 uses Ampere architecture, fabricated on an 8 nm process at Samsung. Its GA102 chip packs 28,300 million transistors onto a 628 mm² die. The transistor density is close: 46.7M per mm² for AMD versus 45.1M per mm² for NVIDIA, but the physical scale is very different.

The W6600M has 1,792 shading units, 112 texture mapping units, and 64 render output units. It also includes 28 ray tracing cores but no tensor cores. The RTX A6000 has 10,752 shading units, 336 TMUs, and 112 ROPs, plus 84 ray tracing cores and 336 tensor cores. The NVIDIA part is built for compute-heavy workloads with its tensor core array, while the AMD part focuses on traditional rasterization with ray tracing support.

Clock behavior differs notably. The W6600M has a base clock of 1224 MHz and a boost of 2034 MHz. The RTX A6000 has a higher base clock at 1410 MHz, but a lower boost clock at 1800 MHz. This means the AMD card boosts higher, but the NVIDIA card holds a higher sustained base frequency.

Memory architectures are also distinct. The W6600M uses 8 GB of GDDR6 on a 128-bit bus, hitting 224.0 GB/s. The RTX A6000 uses 48 GB of GDDR6 on a 384-bit bus, delivering 768.0 GB/s. Both support PCIe 4.0 x16.

API support is identical: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The production status is end-of-life for both, and both use PCIe 4.0 x16. The W6600M is an integrated mobile part with no power connectors and a 90 W TDP, while the A6000 is a dual-slot desktop card with an 8-pin EPS connector and a 300 W TDP.

The Verdict

The data points to a clear split along workload and form factor. The NVIDIA RTX A6000 is the stronger GPU in raw compute and high-end rendering tasks. It wins both head-to-head benchmarks decisively, with a 71.1% lead in OpenCL and a 58.9% lead in Vulkan. Its 48 GB memory and 768.0 GB/s bandwidth make it suitable for large datasets, and its tensor cores add AI acceleration capabilities that the AMD card lacks.

The AMD Radeon Pro W6600M, however, has a higher average benchmark score (61,896 versus 44,075) and sits at the 89th percentile versus the A6000's 84th. It is also a 90 W integrated part, so it belongs in mobile workstations, not tower desktops. If you need a GPU that fits into a laptop or a small form factor system without external power, the W6600M is the only option here.

For users who need maximum compute throughput, memory capacity, and ray tracing performance, the RTX A6000 is the choice. For users who need a capable mobile workstation GPU with strong relative performance, the W6600M makes sense. The A6000 is heavier, uses more power, and requires a 700 W power supply, whereas the W6600M uses no external power connectors at all.

Specification Differences

| Field | AMD Radeon Pro W6600M | NVIDIA RTX A6000 |

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

| Architecture | RDNA 2.0 | Ampere |

| Process Node | 7 nm | 8 nm |

| Foundry | TSMC | Samsung |

| Transistors | 11,060 million | 28,300 million |

| Die Size | 237 mm² | 628 mm² |

| Base Clock | 1224 MHz | 1410 MHz |

| Boost Clock | 2034 MHz | 1800 MHz |

| Memory Size | 8 GB | 48 GB |

| Memory Type | GDDR6 | GDDR6 |

| Bus Width | 128 bit | 384 bit |

| Bandwidth | 224.0 GB/s | 768.0 GB/s |

| Shading Units | 1792 | 10752 |

| TMUs | 112 | 336 |

| ROPs | 64 | 112 |

| RT Cores | 28 | 84 |

| Tensor Cores | None | 336 |

| Pixel Rate | 130.2 GPixel/s | 201.6 GPixel/s |

| Texture Rate | 227.8 GTexel/s | 604.8 GTexel/s |

| FP32 | 7.290 TFLOPS | 38.71 TFLOPS |

| FP16 | 14.58 TFLOPS (2:1) | 38.71 TFLOPS (1:1) |

| TDP | 90 W | 300 W |

| Slot Width | IGP | Dual-slot |

| Power Connectors | None | 8-pin EPS |

| Suggested PSU | None | 700 W |

| Display Outputs | Portable Device Dependent | 4x DisplayPort 1.4a |

| Dimensions | None listed | 267 mm length, 112 mm height |

Head-to-Head Benchmarks

The database lists two direct comparison tests: Geekbench OpenCL and Geekbench Vulkan. The RTX A6000 wins both, and the margins are large.

In Geekbench OpenCL, the RTX A6000 scores 193,937 against the W6600M's 56,140. That is a delta of 71.1% in favor of the NVIDIA card. The A6000's massive shading unit count and tensor core array contribute to this result.

In Geekbench Vulkan, the RTX A6000 scores 164,462 against the W6600M's 67,652. The delta is 58.9% in favor of the A6000. While the gap is narrower than in OpenCL, it is still a decisive win.

The W6600M's wins come elsewhere. It has a higher average benchmark score of 61,896 versus 44,075 for the A6000, a difference of roughly 40% in favor of the AMD card. This is driven by a broader set of tests in the database, not just the two head-to-head ones. The W6600M also sits in a higher percentile rank among all GPUs: 89th versus 84th.

The RTX A6000 also has additional benchmark entries in the database that the W6600M lacks, including Passmark tests. These show strong results: 22,577 in G3D, 14,110 in GPU compute, and 913 in G2D. The DirectX 10/11/12 and DirectX 9 scores are 155, 191, 87, and 245 respectively. These are not head-to-head, but they add context for the A6000's overall profile.

Where Each One Wins

AMD Radeon Pro W6600M wins in:

• Average benchmark score: 61,896 versus 44,075.
• Benchmark percentile: 89th versus 84th.
• Power efficiency: 90 W TDP versus 300 W, no power connectors needed.
• Physical footprint: integrated package for mobile devices, versus a dual-slot 267 mm desktop card.
• Transistor density: 46.7M per mm² versus 45.1M per mm².

NVIDIA RTX A6000 wins in:

• Compute throughput: FP32 at 38.71 TFLOPS versus 7.290 TFLOPS, and FP16 at 38.71 TFLOPS versus 14.58 TFLOPS.
• Memory: 48 GB versus 8 GB, 384-bit versus 128-bit bus, 768 GB/s versus 224 GB/s.
• Ray tracing: 84 RT cores versus 28.
• Tensor acceleration: 336 tensor cores versus none.
• Pixel rate: 201.6 GPixel/s versus 130.2 GPixel/s.
• Texture rate: 604.8 GTexel/s versus 227.8 GTexel/s.
• Shader count: 10,752 versus 1,792.
• Display outputs: 4x DisplayPort 1.4a versus portable device dependent.

In practical terms, the W6600M is for mobile workstations where low power and small size matter. The A6000 is for desktop workstations where top-tier performance and massive memory are needed. The database shows the A6000 as the stronger performer in direct compute tests, but the W6600M holds a better average score across all benchmarks. Choose based on your platform and workload.