AMD Radeon Pro WX 9100 vs AMD Radeon RX 6850M XT Comparison

The AMD Radeon RX 6850M XT and the AMD Radeon Pro WX 9100 represent two distinct approaches to GPU design, with the former being a modern mobile gaming chip and the latter a professional workstation card from an older generation. The benchmark data shows a clear overall performance advantage for the RX 6850M XT, which wins all three head-to-head tests, but the WX 9100 retains specific strengths in memory capacity and connectivity. This analysis breaks down where each card wins, the architectural reasons behind the performance gap, and who should choose which based strictly on the measured data.

Where Each One Wins

The RX 6850M XT dominates in raw compute benchmarks across every API tested. In the Geekbench Metal test, it scores 128,981 against the WX 9100's 71,319, a delta of 80.9%. The Vulkan advantage is even larger, with the RX 6850M XT scoring 99,483 versus 54,711, an 81.8% difference. The OpenCL gap is less extreme but still substantial: the RX 6850M XT posts 85,040 compared to the WX 9100's 66,605, a 27.7% lead. These results indicate that for any general-purpose compute workload, the RX 6850M XT is decisively faster.

The WX 9100, however, wins in areas not captured by these benchmark scores. It offers 16 GB of HBM2 memory, which is 33% more than the RX 6850M XT's 12 GB of GDDR6. For workloads that require large datasets to reside in VRAM, this capacity advantage is significant. The WX 9100 also provides six mini-DisplayPort 1.4a outputs, enabling multi-display professional setups, whereas the RX 6850M XT's display outputs are described as "Portable Device Dependent," meaning they are tied to the laptop chassis. The WX 9100's dual-slot design and 230 W TDP, while higher power consumption, also indicate a card built for sustained desktop workloads rather than mobile efficiency.

Architecture Differences

The two GPUs are built on fundamentally different architectures and process nodes. The RX 6850M XT uses the Navi 22 chip based on RDNA 2.0, manufactured on a 7 nm process by TSMC. This newer architecture supports DirectX 12 Ultimate (12_2), Vulkan 1.4, and features 40 dedicated ray tracing cores. The WX 9100, in contrast, uses the Vega 10 chip based on GCN 5.0, built on a 14 nm process by GlobalFoundries. Its API support stops at DirectX 12 (12_1) and Vulkan 1.3, with no hardware ray tracing capability.

The transistor counts and die sizes tell an interesting story. The RX 6850M XT packs 17,200 million transistors into a 335 mm² die, yielding a high transistor density of 51.3M per mm². The WX 9100 has fewer transistors (12,500 million) but on a much larger 495 mm² die, resulting in a lower density of 25.3M per mm². This reflects the older, less efficient 14 nm process. Despite having fewer transistors, the WX 9100 has more shading units (4096 vs 2560), more texture mapping units (256 vs 160), and the same number of ROPs (64). However, the RX 6850M XT compensates with much higher clock speeds: a base of 2321 MHz and boost of 2581 MHz, compared to the WX 9100's 1200 MHz base and 1500 MHz boost.

Memory architecture is another major divergence. The RX 6850M XT uses a 192-bit GDDR6 bus with 12 GB at 432.0 GB/s bandwidth and 18 Gbps effective speed. The WX 9100 uses a 2048-bit HBM2 bus with 16 GB at 483.8 GB/s bandwidth and 1890 Mbps effective speed. The WX 9100's wider bus provides slightly higher bandwidth, but the RX 6850M XT's faster memory clocks and newer architecture yield better overall throughput in practice.

Head-to-Head Benchmarks

The Geekbench Metal test shows the largest absolute performance gap. The RX 6850M XT scores 128,981, which is 80.9% higher than the WX 9100's 71,319. This is a massive margin, indicating that Apple's Metal API is particularly well optimized for the RDNA 2.0 architecture, or that the older GCN architecture struggles to leverage this API effectively. For any macOS or Metal-based creative workflow, the RX 6850M XT is overwhelmingly faster.

The Vulkan test reveals a similar story, with the RX 6850M XT scoring 99,483 versus 54,711, an 81.8% lead. Vulkan is a cross-platform API used in gaming and professional applications, and the near-identical delta to Metal suggests the RX 6850M XT's architectural efficiency advantage is consistent across low-level APIs. The WX 9100's Vulkan 1.3 support, while functional, cannot match the newer implementation on the RX 6850M XT.

The OpenCL test narrows the gap considerably. The RX 6850M XT scores 85,040, just 27.7% ahead of the WX 9100's 66,605. OpenCL is an older compute standard that may not fully utilize the RDNA 2.0 features, while the GCN architecture was originally designed with this API in mind. This result suggests that in legacy compute workloads, the WX 9100 is far more competitive, though still behind.

Overall, the RX 6850M XT wins all three benchmarks, but the margin varies from 27.7% to 81.8% depending on the API. The average benchmark score for the RX 6850M XT is 78,940, placing it in the 92nd percentile of all GPUs. The WX 9100 averages 64,212, in the 89th percentile. This 23% difference in average scores aligns with the OpenCL margin, suggesting that mixed workloads will see a moderate advantage for the RX 6850M XT.

The Verdict

The data is unambiguous: the RX 6850M XT is the faster GPU in every measured category. Its nearest rivals include the NVIDIA Tesla P100 PCIe 12 GB (0.6% lower average score) and the NVIDIA GeForce RTX 5090 (1.1% lower), placing it in elite company. The WX 9100, meanwhile, sits alongside the NVIDIA CMP 30HX (0.6% higher average) and the AMD Radeon Pro Vega 56 (0.8% higher), indicating it is a mid-to-high range card that has been surpassed by newer designs.

For users prioritizing raw performance in modern APIs, the RX 6850M XT is the clear choice. Its 80.9% Metal and 81.8% Vulkan advantages make it ideal for gaming, real-time rendering, and any workload using current graphics APIs. The 27.7% OpenCL lead, while smaller, still means it wins in compute tasks. Its 13.21 TFLOPS FP32 and 26.43 TFLOPS FP16 performance, combined with 165.2 GPixel/s pixel rate and 413.0 GTexel/s texture rate, outclass the WX 9100's 12.29 TFLOPS FP32, 24.58 TFLOPS FP16, 96.00 GPixel/s, and 384.0 GTexel/s.

However, the WX 9100 is not without its own arguments. Its 16 GB of HBM2 memory is a genuine advantage for users who need to fit large models or datasets in VRAM. Its six mini-DisplayPort outputs allow for professional multi-monitor configurations that the mobile RX 6850M XT cannot match. The WX 9100 also has a lower launch MSRP of 1,599 USD, which may be relevant for certain procurement decisions, though the RX 6850M XT has no stated launch MSRP. For legacy OpenCL workloads, the WX 9100's smaller deficit makes it a viable option if the other factors are more important.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon RX 6850M XT has an average benchmark score of 78,940, while the AMD Radeon Pro WX 9100 averages 64,212. The RX 6850M XT also ranks higher, in the 92nd percentile of all GPUs versus the WX 9100's 89th percentile.

Q: How does the memory configuration differ between the two cards?

A: The RX 6850M XT has 12 GB of GDDR6 memory on a 192-bit bus with 432.0 GB/s bandwidth. The WX 9100 has 16 GB of HBM2 memory on a 2048-bit bus with 483.8 GB/s bandwidth. The WX 9100 offers more capacity and slightly higher bandwidth.

Q: What is the biggest performance gap in the head-to-head benchmarks?

A: The largest delta is in the Geekbench Vulkan test, where the RX 6850M XT scores 99,483 versus the WX 9100's 54,711, an 81.8% difference. The Metal test is nearly identical at 80.9% in favor of the RX 6850M XT.

Q: Does the WX 9100 support ray tracing?

A: No. The WX 9100, based on GCN 5.0 architecture, has no ray tracing cores. The RX 6850M XT, based on RDNA 2.0, includes 40 ray tracing cores and supports DirectX 12 Ultimate (12_2).

Q: Which card has a higher transistor density?

A: The RX 6850M XT has a transistor density of 51.3M per mm², packing 17,200 million transistors into a 335 mm² die on a 7 nm process. The WX 9100 has a density of 25.3M per mm², with 12,500 million transistors on a 495 mm² die using a 14 nm process.

Q: What are the display output capabilities of each card?

A: The WX 9100 provides six mini-DisplayPort 1.4a outputs, suitable for multi-display professional setups. The RX 6850M XT's display outputs are described as "Portable Device Dependent," meaning they depend on the laptop's integrated design.

Specification Differences

| Specification | AMD Radeon RX 6850M XT | AMD Radeon Pro WX 9100 |

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

| Chip | Navi 22 | Vega 10 |

| Architecture | RDNA 2.0 | GCN 5.0 |

| Process Node | 7 nm (TSMC) | 14 nm (GlobalFoundries) |

| Transistors | 17,200 million | 12,500 million |

| Die Size | 335 mm² | 495 mm² |

| Transistor Density | 51.3M / mm² | 25.3M / mm² |

| Base Clock | 2321 MHz | 1200 MHz |

| Boost Clock | 2581 MHz | 1500 MHz |

| Game Clock | 2463 MHz | None |

| Memory Size | 12 GB GDDR6 | 16 GB HBM2 |

| Memory Bus | 192 bit | 2048 bit |

| Memory Bandwidth | 432.0 GB/s | 483.8 GB/s |

| Memory Speed | 18 Gbps effective | 1890 Mbps effective |

| Shading Units | 2560 | 4096 |

| TMUs | 160 | 256 |

| ROPs | 64 | 64 |

| Ray Tracing Cores | 40 | None |

| Pixel Rate | 165.2 GPixel/s | 96.00 GPixel/s |

| Texture Rate | 413.0 GTexel/s | 384.0 GTexel/s |

| FP32 Performance | 13.21 TFLOPS | 12.29 TFLOPS |

| FP16 Performance | 26.43 TFLOPS (2:1) | 24.58 TFLOPS (2:1) |

| TDP | 165 W | 230 W |

| Slot Width | IGP | Dual-slot |

| Power Connectors | None | 1x 6-pin + 1x 8-pin |

| Suggested PSU | None | 550 W |

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

| Display Outputs | Portable Device Dependent | 6x mini-DisplayPort 1.4a |

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

| Vulkan Support | 1.4 | 1.3 |

| Release Date | 2022-01-03 | 2017-07-09 |

| Launch MSRP | None | 1,599 USD |