AMD Radeon Pro Duo vs AMD Radeon RX 6800 XT Comparison

Head-to-Head Benchmarks

The only directly comparable benchmark between these two GPUs in the database is Geekbench OpenCL, and the result is decisively one-sided. The AMD Radeon RX 6800 XT scores 171,304 points, while the AMD Radeon Pro Duo manages 35,860 points in the same test. That represents a 377.7% advantage for the RX 6800 XT, meaning the newer card delivers nearly four times the OpenCL compute performance of the older dual-GPU workstation part.

This single head-to-head result drives the overall win tally: the RX 6800 XT claims 1 win, while the Radeon Pro Duo records 0 wins. For context on the RX 6800 XT's broader standing, its average benchmark score across all recorded tests is 48,477, placing it in the 85th percentile of all GPUs in the database. Its nearest rivals include the NVIDIA RTX A1000 Mobile (average score 47,743, just 1.5% behind), the Intel Arc A550M (49,737, 2.5% ahead), the NVIDIA GeForce RTX 5070 Ti (49,957, 3% ahead), and the AMD Radeon RX Vega 64 (50,001, 3% ahead). The RX 6800 XT sits in a tight cluster where a 3% swing separates it from several competitors.

The Radeon Pro Duo, by contrast, has a much thinner benchmark footprint in the database. Its average score is 35,860, which places it in the 80th percentile of all GPUs. Its nearest rivals are the NVIDIA Quadro GV100 (35,520, 1% behind), the NVIDIA GeForce RTX 5070 Ti Mobile (35,435, 1.2% behind), the NVIDIA T1000 (36,289, 1.2% ahead), and the AMD Radeon RX 5300M (36,529, 1.8% ahead). The Pro Duo's score is thus competitive with those mid-range mobile and professional parts, but it is in a completely different performance class from the RX 6800 XT.

Looking at the RX 6800 XT's individual benchmark results, the data shows consistent strength across compute and graphics workloads. In Geekbench Metal it scores 181,337, in Geekbench Vulkan 136,875, and in Passmark G3D it reaches 24,980. The Passmark DirectX 12 result is 100, which serves as a baseline, while DirectX 11 and DirectX 9 scores are 264 and 265 respectively. The GPU compute score in Passmark is 13,245, and the G2D score is 1,030. These figures paint a picture of a well-rounded modern GPU, though the OpenCL gap against the Pro Duo is the starkest comparison available.

Architecture Differences

The two cards come from different eras of AMD GPU design, and the architectural gap explains much of the benchmark disparity. The RX 6800 XT is built on the Navi 21 chip using RDNA 2.0 architecture, fabricated at TSMC's 7 nm process. It contains 26,800 million transistors on a 520 mm² die, yielding a transistor density of 51.5 million per square millimeter. The Radeon Pro Duo uses the Capsaicin chip with GCN 3.0 architecture, built on a 28 nm process at TSMC. It packs 8,900 million transistors across a 596 mm² die, giving a density of just 14.9 million per square millimeter. The process node advantage alone is enormous: the RX 6800 XT fits over three times as many transistors into a smaller physical area.

Memory configurations differ fundamentally between the two. The RX 6800 XT uses 16 GB of GDDR6 on a 256-bit bus, with memory clocked at 2000 MHz (16 Gbps effective) and bandwidth of 512.0 GB/s. The Radeon Pro Duo uses 4 GB of HBM on a 4096-bit bus, with memory at 500 MHz (1000 Mbps effective) and the same 512.0 GB/s bandwidth. Both achieve identical bandwidth, but through radically different approaches: the newer card uses a narrower bus with fast GDDR6, while the older card relies on an extremely wide HBM interface with modest clock speeds.

Compute resources also diverge sharply. The RX 6800 XT has 4,608 shading units, 288 texture mapping units, 128 ROPs, and 72 ray tracing cores. The Radeon Pro Duo has 4,096 shading units, 256 TMUs, and 64 ROPs, with no dedicated ray tracing hardware. The pixel rate tells the story: the RX 6800 XT achieves 288.0 GPixel/s versus 64.00 GPixel/s for the Pro Duo, a 4.5x difference. Texture rate is 648.0 GTexel/s versus 256.0 GTexel/s, a 2.5x gap. Floating-point performance follows suit: the RX 6800 XT delivers 20.74 TFLOPS FP32 and 41.47 TFLOPS FP16 (2:1 ratio), while the Pro Duo manages 8.192 TFLOPS FP32 and 8.192 TFLOPS FP16 (1:1 ratio).

Clock speeds also reflect the generational leap. The RX 6800 XT has a base clock of 1825 MHz, a boost clock of 2250 MHz, and a game clock of 2015 MHz. The Radeon Pro Duo's clocks are not recorded for base, boost, or game modes in the database, though its memory clock is listed. The RX 6800 XT's power consumption is rated at 300 W TDP with dual-slot cooling and 2x 8-pin power connectors, while the Pro Duo draws 350 W TDP with dual-slot cooling and 3x 8-pin connectors. The suggested PSU for the RX 6800 XT is 700 W, while the Pro Duo asks for 750 W.

Where Each One Wins

Based on the recorded data, the RX 6800 XT wins outright in every category where both cards have measurements. The OpenCL result is the only direct comparison, and it favors the RX 6800 XT by a massive margin. Beyond that, the RX 6800 XT's additional benchmark scores show strength in Metal, Vulkan, and multiple DirectX versions, giving it broad applicability across modern graphics APIs. Its support for DirectX 12 Ultimate (12_2), Vulkan 1.4, and OpenGL 4.6 makes it suitable for contemporary gaming and compute workloads. The presence of 72 ray tracing cores means hardware-accelerated ray tracing is available, a feature entirely absent from the Pro Duo.

The Radeon Pro Duo, despite its age, still holds relevance in specific legacy contexts. Its GCN 3.0 architecture supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.2.170. The 4096-bit HBM bus delivers 512.0 GB/s bandwidth, identical to the RX 6800 XT, which can be advantageous for workloads that are sensitive to memory bandwidth rather than raw compute throughput. The 1:1 FP16 to FP32 ratio on the Pro Duo means half-precision tasks run at the same rate as full-precision, whereas the RX 6800 XT's 2:1 ratio doubles FP16 throughput. For applications specifically tuned for GCN architecture or requiring the Pro Duo's particular memory subsystem, it could still serve a niche role, though the benchmark data shows it is far behind in general compute.

The RX 6800 XT is the clear choice for any modern workload: gaming, compute, ray tracing, or content creation. Its 16 GB VRAM is four times the Pro Duo's 4 GB, its pixel and texture fill rates are multiples higher, and its FP32 performance is 2.5x greater. The Pro Duo's only theoretical advantages are its wider memory bus and its 1:1 FP16 ratio, but these do not translate into benchmark wins in the recorded data.

FAQ

Q: How much faster is the AMD Radeon RX 6800 XT than the AMD Radeon Pro Duo in OpenCL?

A: The RX 6800 XT scores 171,304 in Geekbench OpenCL, while the Pro Duo scores 35,860, giving the RX 6800 XT a 377.7% advantage.

Q: Do both GPUs have the same memory bandwidth?

A: Yes, both achieve 512.0 GB/s, but through different means: the RX 6800 XT uses 16 GB of GDDR6 on a 256-bit bus, while the Pro Duo uses 4 GB of HBM on a 4096-bit bus.

Q: Which GPU supports ray tracing?

A: Only the RX 6800 XT has ray tracing capability, with 72 dedicated ray tracing cores. The Radeon Pro Duo has no ray tracing cores listed.

Q: What are the transistor counts for each card?

A: The RX 6800 XT contains 26,800 million transistors, while the Radeon Pro Duo contains 8,900 million transistors.

Q: How do their percentile rankings compare?

A: The RX 6800 XT sits in the 85th percentile of all GPUs, while the Radeon Pro Duo sits in the 80th percentile.

Q: Which card has a higher pixel fill rate?

A: The RX 6800 XT achieves 288.0 GPixel/s, which is 4.5 times the Radeon Pro Duo's 64.00 GPixel/s.

Specification Differences

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

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

| Architecture | RDNA 2.0 | GCN 3.0 |

| Process Node | 7 nm | 28 nm |

| Transistors | 26,800 million | 8,900 million |

| Die Size | 520 mm² | 596 mm² |

| Transistor Density | 51.5M / mm² | 14.9M / mm² |

| Memory Size | 16 GB GDDR6 | 4 GB HBM |

| Memory Bus Width | 256 bit | 4096 bit |

| Shading Units | 4,608 | 4,096 |

| TMUs | 288 | 256 |

| ROPs | 128 | 64 |

| Ray Tracing Cores | 72 | None |

| FP32 Performance | 20.74 TFLOPS | 8.192 TFLOPS |

| FP16 Performance | 41.47 TFLOPS (2:1) | 8.192 TFLOPS (1:1) |

| Pixel Rate | 288.0 GPixel/s | 64.00 GPixel/s |

| Texture Rate | 648.0 GTexel/s | 256.0 GTexel/s |

| TDP | 300 W | 350 W |

| Power Connectors | 2x 8-pin | 3x 8-pin |

| Suggested PSU | 700 W | 750 W |

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

| DirectX Support | 12 Ultimate (12_2) | 12 (12_0) |

| Vulkan Support | 1.4 | 1.2.170 |

| Display Outputs | 1x HDMI 2.1, 2x DisplayPort 1.4a, 1x USB Type-C | 1x HDMI 1.4a, 3x DisplayPort 1.2 |

| Length | 267 mm (10.5 inches) | 277 mm (10.9 inches) |

| Height | 120 mm (4.7 inches) | 111 mm (4.4 inches) |

| Width | 50 mm (2 inches) | Not recorded |

| Release Date | 2020-10-27 | 2016-04-25 |

| Launch MSRP | 649 USD | 1,499 USD |