AMD Radeon Pro 555 vs AMD Radeon RX 570X Comparison

The AMD Radeon RX 570X and AMD Radeon Pro 555 are both end-of-life graphics solutions built on the same GCN 4.0 architecture, but they serve fundamentally different purposes. The data shows a stark contrast in raw compute capability, memory configuration, and target platform, with the RX 570X emerging as the clear performance leader in the single shared benchmark while the Pro 555 offers a low-power, integrated form factor for portable systems. This analysis breaks down where each card wins, the architectural differences that drive their performance gaps, and what the benchmark numbers actually mean in context.

Where Each One Wins

The benchmark results paint an unambiguous picture of performance hierarchy. In the only direct head-to-head test available—Geekbench OpenCL—the AMD Radeon RX 570X scores 38,939 points against the Pro 555’s 11,682 points. That is a delta of 233.3%, meaning the RX 570X delivers more than triple the compute throughput in this workload. The RX 570X wins the sole head-to-head benchmark, giving it a 1-0 record in direct comparisons.

However, the Pro 555 is not without its own territory. It posts a Geekbench Metal score of 16,236 and a Geekbench Vulkan score of 12,303, while the RX 570X has no recorded results in those specific APIs. For applications that leverage Metal—primarily macOS ecosystem software—the Pro 555’s measured performance is the only data point available. The RX 570X also lacks a Passmark G2D score comparison, though it does hold a Passmark G3D score of 1,923 and a G2D score of 750. The Pro 555’s average benchmark score of 13,407 sits close to the RX 570X’s 13,871 average, but this aggregate figure masks the massive OpenCL disparity; the Pro 555’s average is buoyed by its Metal and Vulkan results, while the RX 570X’s average relies on a single strong OpenCL score and moderate Passmark results.

The practical split is clear: the RX 570X wins on raw compute and traditional desktop workloads, while the Pro 555 holds relevance in Apple-centric environments where Metal performance matters and where its integrated design (IGP slot width) makes it suitable for laptops or compact systems. The RX 570X’s 55th percentile versus the Pro 555’s 54th percentile among all GPUs shows they occupy similar overall standing, but the RX 570X’s OpenCL dominance is the defining differentiator.

Architecture Differences

Both cards share the GCN 4.0 architecture and are fabricated on a 14 nm process at GlobalFoundries, but they are built on different chips with vastly different scales. The RX 570X uses the Polaris 20 die, which packs 5,700 million transistors into a 232 mm² area, yielding a transistor density of 24.6M per mm². The Pro 555 uses the smaller Polaris 21 chip, with 3,000 million transistors on a 123 mm² die, achieving a density of 24.4M per mm²—nearly identical density despite the size difference.

The compute resource disparity is dramatic. The RX 570X fields 2,048 shading units, 128 texture mapping units, and 32 ROPs, while the Pro 555 is equipped with only 768 shading units, 48 TMUs, and 16 ROPs. This translates directly to pixel and texture throughput: the RX 570X delivers 39.81 GPixel/s and 159.2 GTexel/s, versus the Pro 555’s 13.60 GPixel/s and 40.80 GTexel/s. FP32 compute follows the same pattern, with the RX 570X rated at 5.095 TFLOPS (and equal 5.095 TFLOPS FP16, at a 1:1 ratio) compared to the Pro 555’s 1,305.6 GFLOPS (also 1:1 for FP16).

Memory architecture is another major divergence. The RX 570X carries 8 GB of GDDR5 on a 256-bit bus, achieving 224.0 GB/s of bandwidth with memory clocked at 1750 MHz (7 Gbps effective). The Pro 555 is limited to 2 GB of GDDR5 on a 128-bit bus, with bandwidth of just 81.60 GB/s from memory running at 1275 MHz (5.1 Gbps effective). The RX 570X also has a defined base clock of 1168 MHz and boost clock of 1244 MHz, while the Pro 555’s clock speeds are listed as null—its performance is likely constrained by thermal and power limits in its mobile integration.

Power and physical specifications reinforce their different roles. The RX 570X draws up to 150 W TDP, requires a 6-pin power connector, suggests a 450 W PSU, and occupies a dual-slot form factor at 241 mm (9.5 inches) in length. The Pro 555 is rated at just 75 W TDP, uses no power connectors, and is an integrated graphics processor (IGP) with no listed dimensions, indicating it is soldered to a motherboard rather than installed as a discrete card.

FAQ

Q: Which GPU is faster in OpenCL compute?

A: The AMD Radeon RX 570X is decisively faster, scoring 38,939 in Geekbench OpenCL versus the Pro 555’s 11,682, a 233.3% advantage.

Q: Does the Radeon Pro 555 have any benchmark where it outperforms the RX 570X?

A: The head-to-head data shows the RX 570X winning the only shared test (OpenCL). The Pro 555 does have unique scores in Geekbench Metal (16,236) and Vulkan (12,303) that the RX 570X lacks, but no direct comparison exists for those APIs.

Q: What are the memory capacity and bandwidth differences?

A: The RX 570X has 8 GB GDDR5 on a 256-bit bus with 224.0 GB/s bandwidth. The Pro 555 has 2 GB GDDR5 on a 128-bit bus with 81.60 GB/s bandwidth.

Q: Are both GPUs based on the same architecture?

A: Yes, both use GCN 4.0 and are built on a 14 nm process at GlobalFoundries, but they use different dies: Polaris 20 for the RX 570X and Polaris 21 for the Pro 555.

Q: How do their power requirements compare?

A: The RX 570X has a 150 W TDP and requires a 6-pin connector and a 450 W suggested PSU, while the Pro 555 is rated at 75 W TDP with no power connectors needed.

Q: Which GPU has better overall standing among all GPUs?

A: They are nearly identical: the RX 570X sits at the 55th percentile and the Pro 555 at the 54th percentile, with average benchmark scores of 13,871 and 13,407, respectively.

Specification Differences

| Specification | AMD Radeon RX 570X | AMD Radeon Pro 555 |

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

| Chip | Polaris 20 | Polaris 21 |

| Generation | Polaris (RX 500X) | Radeon Pro Mac (500 Series) |

| Transistors | 5,700 million | 3,000 million |

| Die Size | 232 mm² | 123 mm² |

| Transistor Density | 24.6M / mm² | 24.4M / mm² |

| Base Clock | 1168 MHz | Not specified |

| Boost Clock | 1244 MHz | Not specified |

| Memory Clock | 1750 MHz (7 Gbps effective) | 1275 MHz (5.1 Gbps effective) |

| Memory Size | 8 GB | 2 GB |

| Memory Bus Width | 256 bit | 128 bit |

| Memory Bandwidth | 224.0 GB/s | 81.60 GB/s |

| Shading Units | 2048 | 768 |

| TMUs | 128 | 48 |

| ROPs | 32 | 16 |

| Pixel Rate | 39.81 GPixel/s | 13.60 GPixel/s |

| Texture Rate | 159.2 GTexel/s | 40.80 GTexel/s |

| FP32 Performance | 5.095 TFLOPS | 1,305.6 GFLOPS |

| FP16 Performance | 5.095 TFLOPS (1:1) | 1,305.6 GFLOPS (1:1) |

| TDP | 150 W | 75 W |

| Slot Width | Dual-slot | IGP |

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

| Suggested PSU | 450 W | Not specified |

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

| Display Outputs | 1x DVI, 1x HDMI 2.0b, 3x DisplayPort 1.4a | Portable Device Dependent |

| Dimensions | 241 mm (9.5 inches) | Not specified |

Head-to-Head Benchmarks

The sole direct comparison is Geekbench OpenCL, and it is a rout. The RX 570X produces 38,939 points while the Pro 555 manages only 11,682, giving the RX 570X a 233.3% lead. This is not a marginal difference—it is a factor of over three in raw compute throughput. For context, the RX 570X’s nearest rivals in average score include the NVIDIA RTX A2000 Mobile at 13,821 (0.4% higher) and the AMD Radeon 660M at 13,812 (0.4% higher), while the Pro 555’s closest competitors are the AMD Radeon HD 8950M at 13,376 (0.2% lower) and the AMD Radeon RX 5500M at 13,356 (0.4% lower). These rival groupings show both cards hovering around the same average score tier, but the OpenCL result reveals the RX 570X’s ceiling is far higher in that specific workload.

Beyond the direct comparison, the benchmark suite tells a complementary story. The RX 570X posts a Passmark G3D score of 1,923 and a G2D score of 750, indicating solid but not exceptional rasterization performance. The Pro 555 counters with its Metal score of 16,236 and Vulkan score of 12,303, which are not directly comparable to the RX 570X’s results but demonstrate the Pro 555’s capability in Apple’s preferred APIs. The average benchmark scores—13,871 for the RX 570X and 13,407 for the Pro 555—differ by only 3.5%, masking the extreme variance within individual tests.

When interpreting these numbers, the architecture differences explain everything. The RX 570X has 2.67 times the shading units, 2.67 times the TMUs, and double the ROPs of the Pro 555. Its memory bandwidth is 2.75 times higher, and its FP32 throughput is 3.9 times greater. The OpenCL delta of 233.3% aligns closely with these compute resource ratios, suggesting the benchmark scales predictably with hardware capability. The Pro 555’s higher-than-expected average score relative to its compute specs stems from its strong Metal and Vulkan results, which may reflect driver optimizations for its intended Mac environment rather than raw hardware prowess. Ultimately, the RX 570X is the superior performer in shared workloads, while the Pro 555’s value lies in its specific ecosystem fit and minimal power footprint.