AMD Radeon Pro 555 vs AMD Radeon RX 9070 XT Comparison

The AMD Radeon RX 9070 XT and the AMD Radeon Pro 555 occupy entirely different tiers of performance, despite their average benchmark scores being remarkably close. The RX 9070 XT is a modern, high-end discrete GPU built on RDNA 4.0, while the Pro 555 is an older, entry-level mobile part based on GCN 4.0. The data shows that while the Pro 555 holds its own in specific legacy workloads, the RX 9070 XT is decisively superior in modern compute and graphics tasks, offering over five times the performance in Vulkan applications.

FAQ

Q: What is the performance difference in OpenCL compute workloads?

A: The AMD Radeon RX 9070 XT scores 17,428 in Geekbench OpenCL, which is 49.2% higher than the Radeon Pro 555’s score of 11,682. This indicates a substantial advantage for the newer card in general-purpose compute tasks.

Q: How do the two cards compare in Vulkan graphics performance?

A: The RX 9070 XT achieves a Geekbench Vulkan score of 65,879, while the Radeon Pro 555 scores 12,303. This results in a delta of 435.5%, meaning the RX 9070 XT is over five times faster in this modern graphics API.

Q: Which card has more memory and bandwidth?

A: The RX 9070 XT features 16 GB of GDDR6 memory on a 256-bit bus, providing 644.6 GB/s of bandwidth. The Radeon Pro 555 has 2 GB of GDDR5 on a 128-bit bus, with a bandwidth of just 81.60 GB/s.

Q: Are these cards from the same architectural generation?

A: No. The RX 9070 XT uses the RDNA 4.0 architecture (Navi 48 chip) on a 4 nm process, while the Radeon Pro 555 uses the GCN 4.0 architecture (Polaris 21 chip) on a 14 nm process. They are separated by multiple generations of design.

Q: What is the production status of each card?

A: The RX 9070 XT is listed as "Active" in production, having been released in March 2025. The Radeon Pro 555 is "End-of-life," with a release date in June 2017.

Q: Do both cards support the same DirectX version?

A: No. The RX 9070 XT supports DirectX 12 Ultimate (12_2), whereas the Radeon Pro 555 supports DirectX 12 (12_0). This means the newer card supports more advanced rendering features.

Architecture Differences

The fundamental design philosophies behind these two GPUs are vastly different, explaining their performance disparity. The AMD Radeon RX 9070 XT is built on the RDNA 4.0 architecture using a 4 nm process at TSMC, packing 53,900 million transistors into a 357 mm² die. In contrast, the AMD Radeon Pro 555 uses the older GCN 4.0 architecture on a 14 nm process at GlobalFoundries, with a mere 3,000 million transistors on a 123 mm² die. This generational leap allows the RX 9070 XT to achieve a transistor density of 151.0M / mm², compared to the Pro 555’s 24.4M / mm².

The compute resources are equally skewed. The RX 9070 XT contains 4,096 shading units, 256 texture mapping units (TMUs), and 128 ROPs, alongside 64 dedicated ray tracing cores. The Radeon Pro 555, by comparison, has only 768 shading units, 48 TMUs, and 16 ROPs, with no ray tracing hardware at all. This means the newer card has over five times the shading units and over five times the TMUs, granting it a massive raw throughput advantage.

Memory architecture also differs completely. The RX 9070 XT utilizes 16 GB of GDDR6 memory over a 256-bit bus, delivering 644.6 GB/s of bandwidth. The Pro 555 is limited to 2 GB of GDDR5 on a 128-bit bus, resulting in 81.60 GB/s of bandwidth. Furthermore, the RX 9070 XT connects via PCIe 5.0 x16, while the Pro 555 uses the older PCIe 3.0 x8 interface, which halves the available lanes and protocol generation.

Head-to-Head Benchmarks

The two cards share only two common benchmark results in the data, but both show a clear winner. In Geekbench OpenCL, the RX 9070 XT scores 17,428 against the Radeon Pro 555’s 11,682. This translates to a 49.2% lead for the RX 9070 XT, demonstrating its superiority in compute-heavy tasks that utilize OpenCL.

The more dramatic separation appears in Geekbench Vulkan. Here, the RX 9070 XT posts a staggering score of 65,879, while the Pro 555 manages only 12,303. The delta of 435.5% means the RX 9070 XT is roughly 5.4 times faster in this workload. This massive gap reflects not only the raw compute difference but also the architectural efficiency of RDNA 4.0 over GCN 4.0 in modern APIs.

It is notably the Radeon Pro 555 has a benchmark result not shared by the RX 9070 XT: a Geekbench Metal score of 16,236. However, this does not count toward the head-to-head wins, as it is not a common test. The final tally in shared benchmarks is 2 wins for the RX 9070 XT and 0 for the Radeon Pro 555.

Specification Differences

The specification sheets highlight the vast gulf between these two products. The most obvious difference is in memory: the RX 9070 XT has 16 GB of GDDR6 with a 256-bit bus, while the Pro 555 has 2 GB of GDDR5 with a 128-bit bus. This yields a bandwidth difference of 644.6 GB/s versus 81.60 GB/s, a factor of nearly eight.

Process technology is another key divider. The RX 9070 XT is fabricated on a 4 nm TSMC node, whereas the Pro 555 uses a 14 nm GlobalFoundries process. The transistor count differs by an order of magnitude: 53,900 million for the RX 9070 XT versus 3,000 million for the Pro 555. Die size also diverges, with the RX 9070 XT measuring 357 mm² compared to the Pro 555’s 123 mm².

The RX 9070 XT features a base clock of 1660 MHz and a boost clock of 2970 MHz, with a game clock of 2400 MHz. The Pro 555 has no listed base or boost clocks, only a memory clock of 1275 MHz (5.1 Gbps effective). Power requirements are also starkly different: the RX 9070 XT has a TDP of 304 W and requires dual 8-pin power connectors, while the Pro 555 has a TDP of just 75 W and uses no external power connectors. The RX 9070 XT is a dual-slot card, whereas the Pro 555 is an integrated graphics processor (IGP). Finally, the RX 9070 XT supports PCIe 5.0 x16 and has display outputs of 1x HDMI 2.1b and 3x DisplayPort 2.1a, while the Pro 555 is limited to PCIe 3.0 x8 with portable-device-dependent outputs.

Where Each One Wins

The AMD Radeon RX 9070 XT is the clear victor in every shared benchmark category. Its 49.2% advantage in OpenCL and 435.5% advantage in Vulkan make it the superior choice for any modern compute workload, gaming, or content creation that leverages DirectX 12 Ultimate or Vulkan APIs. The 16 GB memory capacity and 644.6 GB/s bandwidth position it for high-resolution textures and large datasets, with 64 ray tracing cores enabling hardware-accelerated ray tracing effects.

The AMD Radeon Pro 555’s only notable achievement is its Geekbench Metal score of 16,236, which is not directly comparable to the RX 9070 XT since that test was not run on the newer card. In shared workloads, it offers no wins. However, the Pro 555’s low 75 W TDP and IGP form factor make it suitable for thin, low-power portable devices where battery life and thermal constraints are paramount, even if its 2 GB memory and 81.60 GB/s bandwidth are severely limiting for demanding tasks.

The Verdict

The data is unambiguous: the AMD Radeon RX 9070 XT is the overwhelmingly superior product for anyone requiring performance. It is over five times faster in Vulkan graphics and nearly 50% faster in OpenCL compute. Its modern RDNA 4.0 architecture, 16 GB of GDDR6 memory, and 64 ray tracing cores make it a future-proof choice for gaming and professional applications. The Pro 555, with its GCN 4.0 architecture and 2 GB memory, is a relic from 2017 that cannot compete in modern benchmarks.

However, the choice depends entirely on the use case. A user needing a discrete GPU for a high-performance desktop or workstation should unequivocally select the RX 9070 XT, which carries a launch MSRP of 599 USD. The Radeon Pro 555, being an end-of-life integrated component with no MSRP listed, is only relevant in the context of an existing legacy Mac system where it cannot be upgraded. For any new build or serious workload, the RX 9070 XT is the only rational choice based on the benchmark evidence.