AMD Radeon Pro 555 vs AMD Radeon RX 7600M XT Comparison

The AMD Radeon Pro 555 and the AMD Radeon RX 7600M XT represent two distinct eras of mobile graphics, separated by nearly six years of architectural evolution. The data shows a stark performance disparity, with the RX 760M XT winning both shared benchmarks decisively, yet the Pro 555 holds a slightly higher overall percentile ranking due to the specific tests in its pool. This comparison is not about close competition but about identifying which workload—legacy professional or modern high-performance—suits each GPU.

The Verdict

The AMD Radeon RX 7600M XT is the clear choice for anyone needing raw modern performance. Benchmark results indicate it dominates the Pro 555 in every directly comparable test, with a Geekbench OpenCL score of 74869 versus 11682 and a Vulkan score of 27793 versus 12303. It is built for current gaming and compute tasks, offering 8 GB of GDDR6 memory and support for DirectX 12 Ultimate.

The AMD Radeon Pro 555, conversely, is a legacy part aimed at older professional workflows. Its average benchmark score of 13407 is actually higher than the RX 7600M XT's 12710, despite the latter's massive wins in the head-to-head tests. This is because the Pro 555's benchmark pool includes Geekbench Metal and OpenCL scores that are not present for the RX 7600M XT, skewing the average. The Pro 555 is for systems where compatibility with older software and a lower power draw are more critical than raw speed. The RX 7600M XT is for everyone else.

Where Each One Wins

The AMD Radeon RX 7600M XT wins on every modern performance metric. In Geekbench OpenCL, it is 84.4% ahead of the Pro 555, and in Geekbench Vulkan, it leads by 55.7%. This translates to a decisive advantage in any task that leverages these APIs, from modern games to GPU-accelerated rendering and machine learning inference. Its 20.23 TFLOPS of FP32 performance versus the Pro 555's 1,305.6 GFLOPS shows a 15x raw compute advantage, making it suitable for heavy workloads.

The AMD Radeon Pro 555 wins only in the context of its specific benchmark suite. It achieves a Geekbench Metal score of 16236, a test not run on the RX 7600M XT, which contributes to its higher average score. Its 75 W TDP is significantly lower than the RX 7600M XT's 120 W, making it a more power-efficient option for thin-and-light portable devices where battery life is paramount. The Pro 555 is the pick for a legacy Mac environment or a system that prioritizes energy efficiency over frame rates.

Architecture Differences

The architectural gap is vast. The Radeon Pro 555 uses the Polaris 21 chip on the GCN 4.0 architecture, fabricated on a 14 nm process at GlobalFoundries. It features 3,000 million transistors on a 123 mm² die. In contrast, the Radeon RX 7600M XT uses the Navi 33 chip on the RDNA 3.0 architecture, fabricated on a 6 nm process at TSMC. This newer chip packs 13,300 million transistors into a 204 mm² die, resulting in a transistor density of 65.2M / mm² versus the Pro 555's 24.4M / mm².

The compute layout differs entirely. The Pro 555 has 768 shading units, 48 TMUs, and 16 ROPs. The RX 7600M XT has 2048 shading units, 128 TMUs, and 64 ROPs, and it also introduces 32 dedicated ray tracing cores, a feature entirely absent from the GCN-based Pro 555. Memory architecture also shifts from GDDR5 to GDDR6, with the RX 7600M XT offering 8 GB of capacity and 288.0 GB/s of bandwidth versus the Pro 555's 2 GB and 81.60 GB/s. The RX 7600M XT also supports newer API standards, including DirectX 12 Ultimate and Vulkan 1.4, while the Pro 555 is limited to DirectX 12 (12_0) and Vulkan 1.3.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon Pro 555 has a higher average benchmark score of 13407, compared to the AMD Radeon RX 7600M XT's 12710. However, this is due to different benchmark pools, as the RX 7600M XT wins all shared tests.

Q: Is the RX 7600M XT faster in Vulkan?

A: Yes. In the Geekbench Vulkan test, the RX 7600M XT scores 27793, which is 55.7% higher than the Pro 555's score of 12303.

Q: Does the RX 7600M XT support ray tracing?

A: Yes, the RX 7600M XT has 32 ray tracing cores. The Radeon Pro 555 has no ray tracing cores.

Q: Which GPU has more memory bandwidth?

A: The AMD Radeon RX 7600M XT has a memory bandwidth of 288.0 GB/s, which is significantly higher than the Radeon Pro 555's 81.60 GB/s.

Q: What is the transistor count difference?

A: The RX 7600M XT contains 13,300 million transistors, while the Radeon Pro 555 contains 3,000 million. The newer chip also uses a more advanced 6 nm process compared to 14 nm.

Q: Which GPU is more energy-efficient?

A: The AMD Radeon Pro 555 has a TDP of 75 W, which is lower than the RX 7600M XT's 120 W. This makes the Pro 555 more suitable for lower-power systems.

Head-to-Head Benchmarks

The two shared benchmarks tell a clear story of generational dominance. In Geekbench OpenCL, the RX 7600M XT scores 74869, a massive 84.4% lead over the Pro 555's 11682. This delta represents the sheer compute throughput difference between the RDNA 3.0 and GCN 4.0 architectures. The RX 7600M XT's 20.23 TFLOPS FP32 performance, combined with its 316.0 GTexel/s texture rate, allows it to crush the Pro 555's 40.80 GTexel/s in any OpenCL workload.

In Geekbench Vulkan, the gap narrows but remains decisive. The RX 7600M XT scores 27793 against the Pro 555's 12303, a 55.7% advantage. This suggests that while Vulkan is more efficient on the older GCN architecture relative to its raw specs, the newer chip's higher clock speeds—a boost of 2469 MHz versus the Pro 555's unspecified boost—and more than double the shading units still create a substantial performance buffer. The RX 7600M XT also benefits from a PCIe 4.0 x16 interface versus the Pro 555's PCIe 3.0 x8, reducing data transfer bottlenecks in CPU-bound scenarios.

The RX 7600M XT also has additional benchmark results not present for the Pro 555. In Passmark G3D, it scores 13907, and in Passmark GPU Compute, it scores 7140. These results show it performs well in DirectX 9, 10, 11, and 12 tests, with scores of 175, 76, 137, and 58 respectively. The Pro 555 has no comparable data, making it impossible to assess its DirectX legacy performance, but given its older architecture and DirectX 12 (12_0) support, it is likely far behind in these metrics.

Specification Differences

The two GPUs differ in nearly every specification field. The process node is a major shift, from 14 nm on the Pro 555 to 6 nm on the RX 7600M XT, and the foundry changes from GlobalFoundries to TSMC. Transistor count jumps from 3,000 million to 13,300 million, and die size increases from 123 mm² to 204 mm², though density improves from 24.4M / mm² to 65.2M / mm².

Memory differs completely: the Pro 555 has 2 GB of GDDR5 on a 128-bit bus with 81.60 GB/s bandwidth, while the RX 7600M XT has 8 GB of GDDR6 on a 128-bit bus with 288.0 GB/s bandwidth. The RX 7600M XT has a base clock of 1280 MHz, a boost clock of 2469 MHz, and a game clock of 2023 MHz; the Pro 555 has no listed base, boost, or game clocks. The memory clock also differs, with the Pro 555 at 1275 MHz and the RX 7600M XT at 2250 MHz.

The compute units are vastly different: 768 shading units, 48 TMUs, and 16 ROPs on the Pro 555 versus 2048 shading units, 128 TMUs, and 64 ROPs on the RX 7600M XT. The RX 7600M XT also adds 32 ray tracing cores, which the Pro 555 lacks. Pixel rate jumps from 13.60 GPixel/s to 158.0 GPixel/s, and texture rate from 40.80 GTexel/s to 316.0 GTexel/s. FP32 performance scales from 1,305.6 GFLOPS to 20.23 TFLOPS, and FP16 from 1,305.6 GFLOPS (1:1) to 40.45 TFLOPS (2:1). TDP increases from 75 W to 120 W, and the bus interface upgrades from PCIe 3.0 x8 to PCIe 4.0 x16. The API support also differs, with the RX 7600M XT supporting DirectX 12 Ultimate and Vulkan 1.4 versus the Pro 555's DirectX 12 (12_0) and Vulkan 1.3. The production status is End-of-life for the Pro 555 and Active for the RX 7600M XT, with release dates of 2017-06-04 and 2023-01-03 respectively.