AMD Radeon Pro W6600M vs AMD Radeon RX 6800 XT Comparison

FAQ

Q: Which GPU shows a higher average benchmark score in the database?

A: The AMD Radeon Pro W6600M has a higher average benchmark score of 61,896, while the AMD Radeon RX 6800 XT averages 48,477. The Pro W6600M also sits at the 89th percentile of all GPUs, compared to the RX 6800 XT's 85th percentile.

Q: How do the two cards compare in Geekbench OpenCL performance?

A: The RX 6800 XT scores 171,304 in Geekbench OpenCL, which is 67.2% ahead of the Pro W6600M's 56,140. This is the largest performance gap recorded in the head-to-head data.

Q: Which GPU has the higher transistor count?

A: The RX 6800 XT uses the Navi 21 chip with 26,800 million transistors, while the Pro W6600M uses Navi 23 with 11,060 million transistors. The RX 6800 XT also has a larger die at 520 mm² versus 237 mm².

Q: What is the difference in memory capacity and bandwidth?

A: The RX 6800 XT offers 16 GB of GDDR6 memory on a 256-bit bus with 512.0 GB/s bandwidth. The Pro W6600M provides 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth.

Q: Are both GPUs based on the same architecture?

A: Yes, both use RDNA 2.0 architecture. They also share the same process node (7 nm, TSMC), DirectX 12 Ultimate support, OpenGL 4.6, and Vulkan 1.4 APIs.

Q: What do the nearest rival comparisons show for each card?

A: The Pro W6600M's nearest rival is the AMD Radeon 8050S, which is only 0.3% behind. The RX 6800 XT's nearest rival is the NVIDIA RTX A1000 Mobile, which is 1.5% behind. The RX 6800 XT trails the Intel Arc A550M by 2.5% and the RTX 5070 Ti by 3%.

Architecture Differences

Both GPUs share the RDNA 2.0 architecture and are fabricated by TSMC on a 7 nm process, but the silicon underneath differs substantially. The AMD Radeon Pro W6600M uses the Navi 23 chip with 11,060 million transistors on a 237 mm² die, yielding a transistor density of 46.7M per mm². The AMD Radeon RX 6800 XT uses the much larger Navi 21 chip, packing 26,800 million transistors into a 520 mm² die, for a density of 51.5M per mm².

The RX 6800 XT is built for desktop performance with a dual-slot form factor, 2x 8-pin power connectors, and a suggested PSU of 700 W. Its power draw is listed at 300 W. The Pro W6600M, by contrast, is an integrated graphics processor (IGP) with no power connectors and a 90 W power envelope, designed for mobile workstations.

Compute resources scale accordingly. The RX 6800 XT has 4,608 shading units, 288 texture mapping units, 128 ROPs, and 72 ray tracing cores. The Pro W6600M has 1,792 shading units, 112 TMUs, 64 ROPs, and 28 ray tracing cores. These differences translate directly into throughput: the RX 6800 XT reaches 20.74 TFLOPS FP32 and 41.47 TFLOPS FP16 (2:1), while the Pro W6600M reaches 7.29 TFLOPS FP32 and 14.58 TFLOPS FP16.

Clock behavior also diverges. The RX 6800 XT runs at a base of 1825 MHz, a game clock of 2015 MHz, and a boost of 2250 MHz. The Pro W6600M starts lower at 1224 MHz base, boosting to 2034 MHz. Memory clocks differ as well: the RX 6800 XT uses 2000 MHz (16 Gbps effective) memory, while the Pro W6600M uses 1750 MHz (14 Gbps effective).

The RX 6800 XT offers display outputs of 1x HDMI 2.1, 2x DisplayPort 1.4a, and 1x USB Type-C. The Pro W6600M's display outputs are listed as portable device dependent. The RX 6800 XT has physical dimensions of 267 mm length, 120 mm height, and 50 mm width. The Pro W6600M has no recorded dimensions, consistent with its IGP classification.

Head-to-Head Benchmarks

The database records two direct benchmark comparisons between these GPUs, and the AMD Radeon RX 6800 XT wins both. The first test, Geekbench OpenCL, shows the RX 6800 XT scoring 171,304 against the Pro W6600M's 56,140. That is a 67.2% advantage for the desktop card, the largest delta in this head-to-head set.

The second test, Geekbench Vulkan, narrows the gap but still favors the RX 6800 XT decisively. The RX 6800 XT scores 136,875, while the Pro W6600M scores 67,652. The delta here is 50.6% in favor of the RX 6800 XT. Both cards support Vulkan 1.4, so the difference reflects raw hardware throughput rather than API capability.

It is importantly the Pro W6600M's average benchmark score of 61,896 exceeds the RX 6800 XT's average of 48,477, despite losing both head-to-head tests. This apparent contradiction stems from the benchmark mix: the Pro W6600M has only two recorded benchmarks (both Geekbench tests), while the RX 6800 XT has eleven, including lower-scoring synthetic tests like Passmark DirectX 9 (265) and Passmark G2D (1,030). The RX 6800 XT's average is pulled down by these additional data points.

The RX 6800 XT also shows a wide spread in its own benchmark results. It reaches 181,337 in Geekbench Metal and 171,304 in OpenCL, but drops to 24,980 in Passmark G3D and 13,245 in Passmark GPU Compute. The Pro W6600M's two scores are relatively close to each other, with Vulkan (67,652) running about 20% higher than OpenCL (56,140). In contrast, the RX 6800 XT's Vulkan score (136,875) is about 20% lower than its OpenCL score.

The Verdict

The data paints a clear picture for raw compute performance: the AMD Radeon RX 6800 XT is the stronger GPU in every direct comparison recorded. It leads by 67.2% in Geekbench OpenCL and by 50.6% in Geekbench Vulkan. It also offers double the memory capacity (16 GB versus 8 GB), more than double the bandwidth (512.0 GB/s versus 224.0 GB/s), and roughly triple the FP32 throughput (20.74 TFLOPS versus 7.29 TFLOPS).

However, the Pro W6600M holds a higher average benchmark score (61,896 versus 48,477) and a higher percentile rank (89th versus 85th). This is largely a function of the benchmark data available: the Pro W6600M's two results are both strong, while the RX 6800 XT's eleven results include several low synthetic scores that dilute its average. A buyer focused on average scores might favor the Pro W6600M, but the head-to-head results favor the RX 6800 XT without ambiguity.

The form factor and power envelope also dictate use cases. The Pro W6600M is an IGP with a 90 W TDP, no power connectors, and portable-device-dependent outputs. The RX 6800 XT is a dual-slot desktop card requiring 2x 8-pin connectors and a 700 W PSU. The Pro W6600M suits mobile workstation builds where power and space are constrained. The RX 6800 XT suits desktop systems where performance is the priority and power delivery is available.

For compute-heavy workloads like OpenCL or Vulkan rendering, the RX 6800 XT is the clear choice based on recorded data. For integrated mobile deployments where the GPU must share a chassis with other components, the Pro W6600M is the only applicable option of the two, despite its lower performance.

Specification Differences

| Specification | AMD Radeon Pro W6600M | AMD Radeon RX 6800 XT |

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

| Chip | Navi 23 | Navi 21 |

| Generation | Radeon Pro Mobile (W6x00M) | Navi II (RX 6000) |

| Transistors | 11,060 million | 26,800 million |

| Die Size | 237 mm² | 520 mm² |

| Transistor Density | 46.7M / mm² | 51.5M / mm² |

| Base Clock | 1224 MHz | 1825 MHz |

| Boost Clock | 2034 MHz | 2250 MHz |

| Game Clock | Not listed | 2015 MHz |

| Memory Clock | 1750 MHz (14 Gbps effective) | 2000 MHz (16 Gbps effective) |

| Memory Size | 8 GB | 16 GB |

| Memory Bus Width | 128 bit | 256 bit |

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

| Shading Units | 1,792 | 4,608 |

| TMUs | 112 | 288 |

| ROPs | 64 | 128 |

| Ray Tracing Cores | 28 | 72 |

| Pixel Rate | 130.2 GPixel/s | 288.0 GPixel/s |

| Texture Rate | 227.8 GTexel/s | 648.0 GTexel/s |

| FP32 | 7.29 TFLOPS | 20.74 TFLOPS |

| FP16 | 14.58 TFLOPS (2:1) | 41.47 TFLOPS (2:1) |

| TDP | 90 W | 300 W |

| Slot Width | IGP | Dual-slot |

| Power Connectors | None | 2x 8-pin |

| Suggested PSU | Not listed | 700 W |

| Display Outputs | Portable Device Dependent | 1x HDMI 2.1, 2x DisplayPort 1.4a, 1x USB Type-C |

| Dimensions | Not listed | 267 mm x 120 mm x 50 mm |

| Release Date | 2021-06-07 | 2020-10-27 |

| Predecessor | FirePro Mobile | Navi |

| Successor | Not listed | Navi III |

| Launch MSRP | Not listed | 649 USD |

Where Each One Wins

The AMD Radeon RX 6800 XT wins in every recorded head-to-head benchmark, so the use-case split comes down to context rather than direct comparisons. In Geekbench OpenCL, the RX 6800 XT's 171,304 score versus 56,140 for the Pro W6600M means the desktop card is the right pick for OpenCL compute workloads. In Geekbench Vulkan, the 136,875 versus 67,652 result gives the RX 6800 XT the edge for Vulkan-based rendering and compute tasks.

The RX 6800 XT also wins on memory capacity and bandwidth, making it suitable for workloads that handle large datasets or high-resolution textures. Its 16 GB frame buffer and 512.0 GB/s bandwidth provide headroom that the Pro W6600M's 8 GB and 224.0 GB/s cannot match. The RX 6800 XT also has a higher pixel rate (288.0 GPixel/s versus 130.2 GPixel/s) and texture rate (648.0 GTexel/s versus 227.8 GTexel/s), which benefits rasterization-heavy tasks.

The Pro W6600M wins in the mobile segment by default: it is an IGP with a 90 W TDP, no power connectors, and portable-device-dependent outputs. This makes it the only viable option among the two for thin-and-light workstations. Its higher average benchmark score (61,896 versus 48,477) and higher percentile (89th versus 85th) also suggest that within its form factor, it delivers competitive performance relative to the broader GPU landscape.

For desktop users with power delivery and space, the RX 6800 XT is the obvious choice across all recorded metrics. For mobile workstation users, the Pro W6600M is the only option that fits the form factor, and its benchmark data indicates it performs well within that constraint. The RX 6800 XT's launch MSRP of 649 USD places it in the high-end desktop segment, while the Pro W6600M has no recorded launch MSRP, reflecting its role as a mobile component rather than a standalone retail product.