AMD Radeon Pro Vega 64X vs AMD Radeon PRO W6600 Comparison

These two AMD workstation cards occupy a surprisingly close performance bracket, despite being separated by two generations of architecture and vastly different designs. The data shows that the Radeon PRO W6600 and the Radeon Pro Vega 64X are essentially neck-and-neck in overall compute ability, with the newer card holding a razor-thin 1.3% lead in average benchmark score. Choosing between them requires looking past raw numbers to see where each one’s specific strengths align with different workloads. The W6600 is a modern, efficient, single-slot solution built on RDNA 2.0, while the Vega 64X is a high-bandwidth, high-power integrated GPU part from the GCN era. Benchmark results indicate that neither is a universal victor; the decision hinges entirely on whether your tasks favor the W6600’s architectural modernity or the Vega 64X’s massive memory bandwidth.

Where Each One Wins

The clearest split between these two cards comes down to the type of API and workload being thrown at them. In the Geekbench Metal test, the AMD Radeon PRO W6600 dominates, scoring 94042 against the Vega 64X’s 83450. That is a decisive 12.7% margin, indicating that for Apple-centric or Metal-accelerated rendering and compute tasks, the W6600 is the clear choice. This victory is likely due to its newer RDNA 2.0 architecture, which brings significant improvements to geometry processing and shader efficiency that Metal can exploit.

Conversely, the AMD Radeon Pro Vega 64X takes the crown in the Geekbench OpenCL test, posting a score of 78467 compared to the W6600’s 73514. This 6.3% advantage for the older card suggests that in raw, general-purpose OpenCL compute, the Vega 64X’s sheer number of shading units and its colossal 512.0 GB/s memory bandwidth provide a tangible benefit. The W6600’s 224.0 GB/s bandwidth appears to be a limiting factor in these scenarios. Therefore, the win distribution is a perfect 1-1 split, making it a true toss-up that depends on software API preference. For Metal users, the W6600 is the winner; for OpenCL-centric pipelines, the Vega 64X pulls ahead.

Architecture Differences

The architectural gap between these two GPUs is substantial. The W6600 is built on the Navi 23 chip using the RDNA 2.0 architecture, manufactured on a 7 nm process by TSMC. This allows it to pack 11,060 million transistors into a compact 237 mm² die, resulting in a high transistor density of 46.7M per mm². In contrast, the Vega 64X uses the Vega 10 chip with the older GCN 5.0 architecture, produced on a 14 nm process by GlobalFoundries. It contains more transistors (12,500 million) but on a much larger 495 mm² die, giving it a lower density of 25.3M per mm².

These differences translate directly into feature sets. The W6600 supports DirectX 12 Ultimate (12_2) and Vulkan 1.4 and includes 28 dedicated ray tracing cores, features entirely absent from the Vega 64X, which only reaches DirectX 12 (12_1) and Vulkan 1.3. The newer card also has a significantly higher clock speed profile, with a base clock of 2331 MHz and a boost of 2580 MHz, compared to the Vega 64X’s 1250 MHz base and 1468 MHz boost. However, the Vega 64X compensates with a much wider memory interface (2048-bit vs 128-bit) and double the VRAM capacity (16 GB vs 8 GB), using HBM2 memory instead of GDDR6. This leads to a massive bandwidth advantage: 512.0 GB/s for Vega 64X versus 224.0 GB/s for the W6600.

Head-to-Head Benchmarks

The head-to-head data shows a clear performance divergence based on the test. In Geekbench Metal, the Radeon PRO W6600 secures a dominant victory with a score of 94042 versus the Vega 64X’s 83450. This 12.7% delta is the largest performance gap in either direction and highlights the W6600’s architectural efficiency in modern API contexts. It is not a marginal win; it is a substantial leap that would be noticeable in any Metal-based render or compute workload.

However, the tables turn in Geekbench OpenCL. Here, the Radeon Pro Vega 64X strikes back with a score of 78467, beating the W6600’s 73514 by a 6.3% margin. This reversal is significant because it shows that the older card’s brute-force compute approach still holds up. The Vega 64X’s higher FP32 throughput (12.03 TFLOPS) and superior texture fill rate (375.8 GTexel/s) help it overcome the W6600’s higher pixel rate (165.1 GPixel/s) and clock speeds in this specific test. The data suggests that while the W6600 is faster in Metal, the Vega 64X retains a measurable edge in OpenCL, making it the better choice for legacy or OpenCL-dependent professional applications.

The Verdict

Strictly from the data, the choice between these two cards depends on your software environment and specific performance needs. If your work primarily involves Metal-accelerated applications, the Radeon PRO W6600 is the definitive winner. Its 12.7% lead in Metal benchmarks is substantial, and its support for DirectX 12 Ultimate and Vulkan 1.4 makes it a more future-proof option for emerging workloads. Its lower 100 W TDP and single-slot design also make it a far more practical choice for standard workstation builds where space and power are concerns.

If your workflow relies heavily on OpenCL, or if you need massive amounts of VRAM for large datasets, the Radeon Pro Vega 64X is the better pick. Its 6.3% advantage in OpenCL and its 16 GB of HBM2 memory with 512.0 GB/s bandwidth give it a clear edge in memory-intensive compute tasks. The trade-off is significant, however, as it draws 250 W and is designed for integrated use, making it less flexible for retrofitting. The verdict is not about which is “better” overall, but which is better for your application. The W6600 wins on modern API performance and efficiency; the Vega 64X wins on raw OpenCL compute and memory capacity.

FAQ

Q: Which card has higher average benchmark scores?

A: The AMD Radeon PRO W6600 has a slightly higher average benchmark score of 81995, compared to the Radeon Pro Vega 64X’s 80959, giving the W6600 a 1.3% lead overall.

Q: Is the Radeon PRO W6600 faster in Metal benchmarks?

A: Yes, significantly. The W6600 scores 94042 in Geekbench Metal, while the Vega 64X scores 83450, resulting in a 12.7% advantage for the W6600.

Q: Does the older Radeon Pro Vega 64X win any benchmark tests?

A: Yes, it wins in Geekbench OpenCL, scoring 78467 against the W6600’s 73514, a 6.3% margin in favor of the Vega 64X.

Q: How do their memory specifications differ?

A: The Radeon Pro Vega 64X features 16 GB of HBM2 memory with a 2048-bit bus and 512.0 GB/s bandwidth. The Radeon PRO W6600 has 8 GB of GDDR6 memory with a 128-bit bus and 224.0 GB/s bandwidth.

Q: Do both cards support the same modern graphics features?

A: No. The Radeon PRO W6600 supports DirectX 12 Ultimate and Vulkan 1.4 and includes 28 ray tracing cores. The Radeon Pro Vega 64X is limited to DirectX 12 (12_1) and Vulkan 1.3 and has no ray tracing cores.

Q: What are the power consumption differences?

A: The Radeon PRO W6600 has a TDP of 100 W, while the Radeon Pro Vega 64X has a much higher TDP of 250 W.

Specification Differences

| Specification | AMD Radeon PRO W6600 | AMD Radeon Pro Vega 64X |

| :--- | :--- | :--- |

| Chip | Navi 23 | Vega 10 |

| Architecture | RDNA 2.0 | GCN 5.0 |

| Process Node | 7 nm | 14 nm |

| Foundry | TSMC | GlobalFoundries |

| Transistors | 11,060 million | 12,500 million |

| Die Size | 237 mm² | 495 mm² |

| Base Clock | 2331 MHz | 1250 MHz |

| Boost Clock | 2580 MHz | 1468 MHz |

| Memory Size | 8 GB | 16 GB |

| Memory Type | GDDR6 | HBM2 |

| Memory Bus Width | 128 bit | 2048 bit |

| Memory Bandwidth | 224.0 GB/s | 512.0 GB/s |

| Shading Units | 1792 | 4096 |

| TMUs | 112 | 256 |

| ROPs | 64 | 64 |

| Ray Tracing Cores | 28 | None |

| Pixel Rate | 165.1 GPixel/s | 93.95 GPixel/s |

| Texture Rate | 289.0 GTexel/s | 375.8 GTexel/s |

| FP32 Performance | 9.247 TFLOPS | 12.03 TFLOPS |

| TDP | 100 W | 250 W |

| Slot Width | Single-slot | IGP |

| Power Connectors | 1x 6-pin | None |

| Bus Interface | PCIe 4.0 x8 | PCIe 3.0 x16 |

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

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

| Vulkan Support | 1.4 | 1.3 |

| Release Date | 2021-06-07 | 2019-03-18 |