AMD Radeon Pro 580 vs AMD Radeon RX 6550M Comparison

# AMD Radeon RX 6550M vs AMD Radeon Pro 580

The AMD Radeon RX 6550M and AMD Radeon Pro 580 are two very different mobile GPUs separated by six years of architectural progress. The RX 6550M is a modern RDNA 2.0 part built on TSMC's 6 nm node, while the Pro 580 is a GCN 4.0-era chip from 2017 on GlobalFoundries' 14 nm process. Benchmark data shows the newer card winning both head-to-head tests, but the Pro 580 still holds advantages in memory capacity and bus width that matter for specific workloads. This analysis breaks down exactly where each GPU stands based on the available benchmark results and specifications.

Head-to-Head Benchmarks

The two GPUs were tested in two shared benchmarks, and the RX 6550M won both. In Geekbench OpenCL, the RX 6550M scored 42,536 against the Pro 580's 38,457, a 10.6% advantage. That is a solid but not overwhelming margin—enough to feel noticeably faster in compute-heavy tasks, but not a generational stomping. The gap widens considerably in Geekbench Vulkan, where the RX 6550M scored 50,867 versus 43,285 for the Pro 580, a 17.5% lead. Vulkan tends to favor newer architectures with lower overhead, and RDNA 2.0's modern command processor shows its strength here.

Looking at the average benchmark scores across all tested applications, the RX 6550M sits at 46,702, which places it in the 85th percentile of all GPUs. The Pro 580 averages 40,318, good for the 82nd percentile. That 6,384-point average gap (roughly 15.8%) is consistent with the head-to-head results. In the nearest rival context, the RX 6550M is essentially tied with the Intel Arc A530M (46,614, +0.2%) and the AMD Radeon RX 5600M (46,601, +0.2%), and it leads the NVIDIA RTX A2000 by 1.4% and the RTX 5880 Ada Generation by 1.6%. The Pro 580, meanwhile, trades blows with the NVIDIA GeForce RTX 5070 (40,377, -0.1% for the Pro), beats the Radeon Pro WX 7100 by 0.6%, but trails the Radeon Pro 5300 by 1.4% and leads the RTX A500 Mobile by 1.9%.

What these numbers tell a builder is that the RX 6550M is the faster GPU in raw compute, especially in modern graphics APIs. The 17.5% Vulkan win is the headline result—it suggests the RDNA 2.0 architecture extracts more performance from the same workload than GCN 4.0 can manage. The OpenCL margin is smaller but still decisive. Neither benchmark is a close call, and the RX 6550M's higher percentile ranking confirms it slots into a higher performance tier overall.

FAQ

Q: Which GPU is faster in Geekbench Vulkan?

A: The AMD Radeon RX 6550M wins by a 17.5% margin, scoring 50,867 versus 43,285 for the AMD Radeon Pro 580.

Q: How much memory does each GPU have?

A: The RX 6550M has 4 GB of GDDR6 on a 64-bit bus, while the Pro 580 has 8 GB of GDDR5 on a 256-bit bus.

Q: Does the Radeon Pro 580 support ray tracing?

A: No. The Pro 580 has no ray tracing cores listed in its specifications, whereas the RX 6550M includes 16 ray tracing cores.

Q: What API level does each GPU support?

A: The RX 6550M supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the Pro 580 supports DirectX 12 (12_0) and Vulkan 1.3. Both support OpenGL 4.6.

Q: Which GPU has a higher boost clock?

A: The RX 6550M boosts to 2840 MHz, more than double the Pro 580's 1200 MHz boost clock.

Q: What is the power draw difference?

A: The RX 6550M has an 80 W TDP, while the Pro 580 draws 185 W. That is a 105 W difference in favor of the newer card.

Where Each One Wins

The RX 6550M wins in every benchmark where both were tested, so its case is straightforward: it is the faster GPU for compute and graphics workloads that fit within its memory limits. The 10.6% OpenCL lead and 17.5% Vulkan lead make it the clear choice for gaming, general GPU compute, and any application that leverages modern APIs. Its 6 nm process node and RDNA 2.0 architecture deliver higher clocks (2840 MHz boost versus 1200 MHz) and better efficiency (80 W versus 185 W TDP), which matters in laptops where thermals and battery life are constraints. The RX 6550M also supports DirectX 12 Ultimate and Vulkan 1.4, giving it access to the latest rendering features including ray tracing via its 16 dedicated RT cores.

The Pro 580's wins are not in benchmarks but in specifications that matter for certain professional workloads. It has 8 GB of VRAM—double the RX 6550M's 4 GB—which is critical for large datasets, high-resolution textures, or multi-application workflows that exceed a 4 GB frame buffer. Its 256-bit memory bus provides 217.0 GB/s of bandwidth versus 144.0 GB/s on the RX 6550M, a 50.7% advantage in raw memory throughput. For tasks like large 3D scene rendering, video editing with long timelines, or machine learning inference on datasets that fit in VRAM, the Pro 580's memory subsystem could prove more useful despite its lower compute scores. It also offers more shading units (2304 versus 1024) and more texture mapping units (144 versus 64), which theoretically helps in texture-heavy workloads—though the benchmark data suggests the RX 6550M's architectural efficiency overcomes that disadvantage in practice.

Specification Differences

The two GPUs differ substantially in nearly every specification. The RX 6550M uses a Navi 24 chip on TSMC's 6 nm process with 5,400 million transistors on a 107 mm² die. The Pro 580 uses an Ellesmere chip on GlobalFoundries' 14 nm process with 5,700 million transistors on a 232 mm² die. That is a transistor density of 50.5 million per mm² for the RX 6550M versus 24.6 million per mm² for the Pro 580—a 2x density advantage for the newer part.

Clock speeds show the biggest gap: the RX 6550M runs at 2000 MHz base and 2840 MHz boost, with a 2560 MHz game clock, while the Pro 580 runs at 1100 MHz base and 1200 MHz boost. Memory clocks differ similarly—2250 MHz (18 Gbps effective) for the RX 6550M versus 1695 MHz (6.8 Gbps effective) for the Pro 580. The memory configuration is where the Pro 580 fights back: 8 GB GDDR5 on a 256-bit bus versus 4 GB GDDR6 on a 64-bit bus. The Pro 580's bandwidth of 217.0 GB/s beats the RX 6550M's 144.0 GB/s despite the older memory type.

Compute resources also differ significantly. The RX 6550M has 1024 shading units, 64 TMUs, and 32 ROPs, plus 16 ray tracing cores. The Pro 580 has 2304 shading units, 144 TMUs, and 32 ROPs, but no ray tracing cores. The RX 6550M's pixel rate is 90.88 GPixel/s versus 38.40 GPixel/s for the Pro 580, and its texture rate is 181.8 GTexel/s versus 172.8 GTexel/s. FP32 throughput is close—5.816 TFLOPS for the RX 6550M versus 5.530 TFLOPS for the Pro 580—but FP16 is a different story: the RX 6550M hits 11.63 TFLOPS with a 2:1 ratio, while the Pro 580 manages only 5.530 TFLOPS at 1:1.

The bus interface also differs: PCIe 4.0 x4 for the RX 6550M versus PCIe 3.0 x16 for the Pro 580. Power draw is dramatically different at 80 W versus 185 W. The RX 6550M is listed as "Active" production status with a January 2023 release, while the Pro 580 is "End-of-life" and released in June 2017.

Architecture Differences

The architectural gap between these two GPUs is generational. The RX 6550M is built on RDNA 2.0, AMD's second-generation Radeon DNA architecture, which introduces hardware ray tracing support via 16 dedicated RT cores. It also brings a redesigned compute unit layout that improves instruction-level parallelism and reduces latency compared to GCN. The 6 nm process from TSMC allows much higher clock speeds with lower power—the 2840 MHz boost clock is more than double the Pro 580's 1200 MHz, and it does so at less than half the TDP.

The Pro 580 is built on GCN 4.0, the fourth iteration of AMD's Graphics Core Next architecture. GCN was designed for compute-heavy workloads and uses a wide, simple design with many shading units (2304 here) running at modest clocks. The 14 nm process from GlobalFoundries is two generations behind TSMC's 6 nm in terms of density and efficiency. GCN 4.0 lacks dedicated ray tracing hardware, and its FP16 throughput is identical to FP32 (1:1 ratio), meaning it offers no half-precision acceleration. RDNA 2.0, by contrast, provides 2:1 FP16 throughput, which the 11.63 TFLOPS figure reflects.

Memory architecture is another key divide. The RX 6550M uses a narrow 64-bit bus with fast GDDR6 memory, relying on high clocks and cache efficiency to compensate for limited bandwidth. The Pro 580 uses a wide 256-bit bus with slower GDDR5, achieving higher bandwidth through sheer bus width. This is a fundamental design philosophy shift: RDNA 2.0 favors latency reduction and cache-friendly architectures, while GCN 4.0 favors raw memory parallelism. The RX 6550M's PCIe 4.0 x4 interface is newer but narrower than the Pro 580's PCIe 3.0 x16, which could affect external data transfers.

The transistor counts are nearly identical (5,400 million versus 5,700 million), but the die sizes tell the story of process advancement: 107 mm² versus 232 mm². The RX 6550M packs similar transistor density into less than half the silicon area, which drives its efficiency advantage.

The Verdict

The AMD Radeon RX 6550M is the faster GPU in every benchmark comparison, and the data supports choosing it for most use cases. It leads by 10.6% in OpenCL and 17.5% in Vulkan, occupies the 85th percentile of all GPUs (versus the 82nd for the Pro 580), and does so at 80 W compared to 185 W. Its modern RDNA 2.0 architecture brings ray tracing, DirectX 12 Ultimate, and Vulkan 1.4 support, plus double the FP16 throughput. For gaming, general compute, and any workload that fits within 4 GB of VRAM, the RX 6550M is the clear pick.

The Pro 580 is not without merit, but its case rests entirely on memory capacity and bandwidth. The 8 GB VRAM and 217.0 GB/s bandwidth are significant for professional workloads that exceed a 4 GB frame buffer or benefit from wide memory buses. Its 2304 shading units and 144 TMUs are also higher counts, even if the benchmark results show the RX 6550M overcoming that disadvantage through architectural efficiency. For a builder with legacy GCN-optimized software, or for tasks that require more than 4 GB of VRAM, the Pro 580 remains a viable option—but it is end-of-life, draws 185 W, and trails in every measured test.

The practical recommendation: choose the RX 6550M unless you specifically need 8 GB of VRAM or the wider memory interface. The 17.5% Vulkan lead alone justifies the newer card for most modern applications, and the 105 W TDP difference makes it the only sensible choice for thin-and-light laptops. The Pro 580 is a reminder that memory capacity can outlive architectural relevance, but the benchmark data shows the RX 6550M's performance advantages are decisive.