AMD Radeon Pro 580X vs AMD Radeon Pro Duo Comparison

The AMD Radeon Pro 580X and AMD Radeon Pro Duo represent two very different approaches to professional graphics, separated by a generation of GPU architecture and a fundamental shift in design philosophy. The data shows a surprisingly close contest in the only directly comparable benchmark, despite the Pro Duo’s massive specification advantage in raw compute resources. The Radeon Pro 580X edges out a win in the single head-to-head test, but the Pro Duo’s sheer throughput capabilities make it a formidable workstation part for specific workloads.

Head-to-Head Benchmarks

The only directly comparable benchmark in the data is the Geekbench OpenCL test, and it produces a remarkably tight result. The Radeon Pro 580X scores 36,426, while the Radeon Pro Duo trails slightly with 35,860. This gives the 580X a 1.6% lead, a margin that is effectively within run-to-run variance for OpenCL workloads. The 580X wins the sole head-to-head comparison, but the difference is small enough that it does not represent a decisive victory.

What makes this result notable is the specification disparity between the two cards. The Pro Duo packs 4,096 shading units, 256 texture mapping units, and 64 ROPs, along with 8.192 TFLOPS of FP32 compute. The 580X, by contrast, offers 2,304 shading units, 144 TMUs, and 32 ROPs, with 5.530 TFLOPS of FP32 performance. The Pro Duo should theoretically be roughly 48% faster in raw compute throughput, yet the benchmark shows it actually losing. This suggests that the Pro Duo’s older GCN 3.0 architecture, paired with its 28 nm process node, is not scaling efficiently in modern OpenCL tests.

Looking at the broader benchmark context, both cards sit in a similar performance tier. The 580X has an average benchmark score of 38,706 across all its tests, placing it in the 82nd percentile of all GPUs. Its nearest rivals include the NVIDIA GeForce MX570 A at 38,691 (0% delta), the GeForce RTX 5080 Mobile at 38,349 (0.9% slower), and the GeForce MX570 at 38,299 (1.1% slower). The Pro Duo, with only a single OpenCL score, averages 35,860, putting it in the 80th percentile. Its nearest rivals are the NVIDIA Quadro GV100 at 35,520 (1% slower), the GeForce RTX 5070 Ti Mobile at 35,435 (1.2% slower), and the AMD Radeon RX 5300M at 36,529 (1.8% faster). The Pro Duo’s single score does not capture its potential in other API tests, but it does show that its OpenCL performance is competitive with modern mid-range and mobile parts.

Architecture Differences

The architectural gap between these two cards is substantial and explains much of their benchmark behavior. The Radeon Pro 580X is built on GCN 4.0 architecture, manufactured on a 14 nm process at GlobalFoundries. It uses the Ellesmere chip, which contains 5,700 million transistors on a 232 mm² die. This results in a transistor density of 24.6 million per square millimeter. The newer process node allows for higher clock speeds and better power efficiency compared to the older design.

The Radeon Pro Duo uses the Capsaicin chip, built on GCN 3.0 architecture and manufactured on a 28 nm process at TSMC. This older node is significantly less dense, packing 8,900 million transistors across a massive 596 mm² die, giving a transistor density of only 14.9 million per square millimeter. The Pro Duo is physically a much larger and more power-hungry part, with a 350 W TDP and requiring three 8-pin power connectors plus a 750 W power supply. The 580X, in contrast, is an integrated graphics processor with a 185 W TDP and no external power connectors.

Clock speeds tell a similar story of generational progress. The 580X runs at a base clock of 1100 MHz and boosts to 1200 MHz, with memory clocked at 1710 MHz (6.8 Gbps effective). The Pro Duo does not list base or boost clocks, but its memory runs at just 500 MHz (1000 Mbps effective). Despite the Pro Duo’s much higher shading unit count, the 580X’s superior clock speeds and newer architecture help it achieve competitive performance with far fewer resources.

Memory subsystems differ fundamentally as well. The 580X uses 8 GB of GDDR5 on a 256-bit bus, delivering 218.9 GB/s of bandwidth. The Pro Duo uses 4 GB of HBM (High Bandwidth Memory) on a massive 4096-bit bus, delivering 512.0 GB/s. The Pro Duo’s bandwidth advantage is significant for memory-bound workloads, but its capacity is half that of the 580X, which may limit its usefulness in large data sets.

FAQ

Q: Which card is faster in OpenCL benchmarks?

A: The Radeon Pro 580X scores 36,426 in Geekbench OpenCL, which is 1.6% higher than the Radeon Pro Duo’s 35,860. The 580X wins the only head-to-head comparison between the two.

Q: Does the Radeon Pro Duo have more raw compute power?

A: Yes. The Pro Duo offers 8.192 TFLOPS of FP32 performance, compared to 5.530 TFLOPS for the 580X. It also has 4,096 shading units versus 2,304, and 256 TMUs versus 144.

Q: How do the memory configurations compare?

A: The 580X has 8 GB of GDDR5 on a 256-bit bus with 218.9 GB/s bandwidth. The Pro Duo has 4 GB of HBM on a 4096-bit bus with 512.0 GB/s bandwidth. The Pro Duo has more than double the bandwidth but half the capacity.

Q: What is the transistor count difference?

A: The Pro Duo contains 8,900 million transistors on a 596 mm² die, while the 580X contains 5,700 million on a 232 mm² die. The Pro Duo’s larger die is due to its older 28 nm process, compared to the 580X’s 14 nm node.

Q: Which card has better API support for modern software?

A: Both support DirectX 12 (12_0) and OpenGL 4.6. The 580X supports Vulkan 1.3, while the Pro Duo supports Vulkan 1.2.170. The 580X has a newer Vulkan implementation.

Q: What is the physical size difference between the two?

A: The Pro Duo is a dual-slot card measuring 277 mm in length and 111 mm in height, requiring three 8-pin power connectors. The 580X is an integrated graphics processor (IGP) with no length or height dimensions listed.

Specification Differences

The two cards differ across nearly every major specification category. The most obvious difference is process node: the 580X uses 14 nm at GlobalFoundries, while the Pro Duo uses 28 nm at TSMC. This drives a major difference in die size, with the Pro Duo at 596 mm² versus 232 mm² for the 580X, and transistor counts of 8,900 million versus 5,700 million respectively.

Clock speeds differ significantly, though the Pro Duo lacks base and boost clock listings. The 580X runs at 1100 MHz base and 1200 MHz boost, while the Pro Duo’s memory clock is 500 MHz compared to 1710 MHz for the 580X. Memory size and type also differ: 8 GB GDDR5 on a 256-bit bus for the 580X, versus 4 GB HBM on a 4096-bit bus for the Pro Duo. Bandwidth favors the Pro Duo at 512.0 GB/s versus 218.9 GB/s.

Compute resources are heavily skewed toward the Pro Duo. It has 4,096 shading units, 256 TMUs, and 64 ROPs, while the 580X has 2,304 shading units, 144 TMUs, and 32 ROPs. Pixel rate is 64.00 GPixel/s for the Pro Duo versus 38.40 GPixel/s for the 580X, and texture rate is 256.0 GTexel/s versus 172.8 GTexel/s. FP32 and FP16 performance are both 8.192 TFLOPS for the Pro Duo and 5.530 TFLOPS for the 580X.

Power and physical design differ dramatically. The Pro Duo has a 350 W TDP, is dual-slot, requires three 8-pin power connectors, and uses PCIe 3.0 x16. The 580X has a 185 W TDP, is an IGP, has no power connectors, and uses an Apple MPX interface. Display outputs also differ: the 580X has 2x HDMI 2.0b, while the Pro Duo has 1x HDMI 1.4a and 3x DisplayPort 1.2. The Pro Duo has a launch MSRP of 1,499 USD and was released in April 2016, while the 580X came out in March 2019 with no MSRP listed.

Where Each One Wins

The Radeon Pro 580X wins in the head-to-head OpenCL benchmark, and its overall average benchmark score of 38,706 is higher than the Pro Duo’s 35,860. It also offers several practical advantages. Its 8 GB of memory provides more capacity for large datasets or multi-application workflows. The newer 14 nm process and GCN 4.0 architecture deliver better performance per watt, as shown by its 185 W TDP versus the Pro Duo’s 350 W. The 580X also supports Vulkan 1.3, which is a newer specification than the Pro Duo’s Vulkan 1.2.170. For users who need a modern, efficient part with current API support and a smaller physical footprint, the 580X is the clear choice.

The Radeon Pro Duo wins on raw specification output. Its 8.192 TFLOPS of FP32 performance, 4,096 shading units, and 512.0 GB/s of memory bandwidth make it a more capable part for compute-heavy workloads that can saturate its resources. The dual-slot design with three 8-pin power connectors indicates it is built for sustained, high-throughput operation in a workstation chassis. Its 64 ROPs and 256 TMUs provide higher pixel and texture rates, which could benefit certain rendering tasks. For users who prioritize raw throughput over efficiency and do not need more than 4 GB of memory, the Pro Duo’s specification sheet remains impressive even years after its release.

The benchmark data suggests that modern software does not fully exploit the Pro Duo’s hardware advantages, as evidenced by its loss in the OpenCL test despite a 48% theoretical compute advantage. The 580X’s architectural efficiency and higher clock speeds compensate for its fewer resources. The choice between these two ultimately comes down to whether the user values the 580X’s balance of capacity, efficiency, and modern API support, or the Pro Duo’s raw, albeit underutilized, compute potential.