GPU Comparison

The NVIDIA RTX A2000 Mobile is decisively faster than the AMD Radeon Pro 555 in every shared benchmark, with a massive average score advantage of 13,821 to 13,407. The data shows a generational gap: the RTX A2000 Mobile leads by 383.8% in Geekbench OpenCL and by 332% in Geekbench Vulkan, making the comparison less a contest and more a demonstration of technical progress. The Radeon Pro 555 holds a narrow edge in overall percentile ranking among all GPUs, sitting at the 54th percentile versus the RTX A2000 Mobile’s 55th, but this is a statistical quirk driven by different benchmark sets rather than competitive performance.

Head-to-Head Benchmarks

The RTX A2000 Mobile wins both head-to-head tests by overwhelming margins. In Geekbench OpenCL, it scores 56,518 against the Radeon Pro 555’s 11,682, a delta of 383.8%. This is not a close race; the NVIDIA part delivers nearly five times the compute throughput in this API, reflecting its modern architecture and higher resource counts. The Vulkan result tells the same story: 53,146 for the RTX A2000 Mobile versus 12,303 for the AMD part, a 332% advantage. Both deltas exceed anything seen in the nearest-rival comparisons for either card, where deltas hover between -1.5% and 0.6%, confirming that these two GPUs are not in the same performance class.

The Radeon Pro 555 has no countervailing win. It does not appear in any head-to-head test with a victory, and its own benchmark scores, 16,236 in Geekbench Metal, 11,682 in OpenCL, and 12,303 in Vulkan, are all far below the RTX A2000 Mobile’s numbers in the shared tests. Even its best result, the Metal score, would not close the gap if it were directly comparable, since that test is exclusive to AMD’s part and has no NVIDIA counterpart in this data. The average benchmark score for the RTX A2000 Mobile is 13,821, slightly above the Radeon Pro 555’s 13,407, but this aggregate is misleading; it is pulled down by low DirectX synthetic scores on the NVIDIA side (57, 68, 47, and 115 in PassMark tests) that do not reflect the OpenCL and Vulkan dominance.

Where Each One Wins

The RTX A2000 Mobile wins in every category where direct comparison is possible. For OpenCL workloads, commonly used for general-purpose GPU compute, it is the clear choice, with a 383.8% lead. For Vulkan rendering, it is equally dominant at 332% ahead. These two APIs cover a broad range of modern applications, from compute acceleration to cross-platform graphics, and the NVIDIA part excels in both. Its PassMark G3D score of 9,611 and GPU compute score of 4,334 further indicate strong directX and compute performance, though these lack a direct AMD counterpart in the data.

The Radeon Pro 555’s only unique advantage is its Geekbench Metal score of 16,236, a test exclusive to Apple’s Metal API. Since the RTX A2000 Mobile has no Metal benchmark in the data, this is the sole area where the AMD card shows a measurable strength without a direct NVIDIA rival. However, this does not translate to a win in any head-to-head test, and the card’s other scores, 11,682 in OpenCL and 12,303 in Vulkan, are roughly one-fifth to one-quarter of the NVIDIA’s performance in those same tests. For users on Windows or Linux, the RTX A2000 Mobile is superior in all measured metrics. For macOS environments, the Radeon Pro 555’s Metal support is its only redeeming feature, but even that does not compensate for the raw compute deficit.

Architecture Differences

The architecture gap is stark. The RTX A2000 Mobile uses NVIDIA’s Ampere architecture on an 8nm Samsung process, while the Radeon Pro 555 uses AMD’s GCN 4.0 on a 14nm GlobalFoundries process. This process difference alone explains much of the performance disparity: 8nm allows for 8,700 million transistors on a 200mm² die, yielding a transistor density of 43.5 million per mm². In contrast, the Radeon Pro 555 packs only 3,000 million transistors on a 123mm² die, with a density of 24.4 million per mm². The NVIDIA chip has nearly three times the transistors and higher density, enabling more compute units in the same footprint.

The RTX A2000 Mobile also brings hardware features the AMD part lacks entirely. It has 20 ray tracing cores and 80 tensor cores, which are absent from the Radeon Pro 555. This makes the NVIDIA card capable of hardware-accelerated ray tracing and AI workloads, whereas the AMD card relies on older GCN compute units with no dedicated acceleration for these tasks. The shading unit count reinforces this: 2,560 shading units on the NVIDIA versus 768 on the AMD, a 3.3x difference. Texture mapping units (80 vs 48) and render output units (48 vs 16) follow the same pattern, with the NVIDIA part having more of each. The API support also differs, the RTX A2000 Mobile supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the Radeon Pro 555 is limited to DirectX 12 (12_0) and Vulkan 1.3, meaning the NVIDIA card can handle the latest graphics features and the AMD card cannot.

Specification Differences

The memory subsystem shows a clear split. The RTX A2000 Mobile has 4GB of GDDR6 memory with a 128-bit bus and 192.0 GB/s bandwidth, while the Radeon Pro 555 has 2GB of GDDR5 with the same 128-bit bus but only 81.60 GB/s bandwidth. The NVIDIA card doubles the capacity and more than doubles the bandwidth, which is critical for texture-heavy workloads and larger datasets. Memory clocks differ as well: 1500 MHz (12 Gbps effective) for the NVIDIA versus 1275 MHz (5.1 Gbps effective) for the AMD, again favoring the newer part.

Compute throughput is equally lopsided. The RTX A2000 Mobile delivers 8.637 TFLOPS of FP32 and FP16 performance, while the Radeon Pro 555 manages 1,305.6 GFLOPS (approximately 1.31 TFLOPS) in both. Pixel rate and texture rate follow: 80.98 GPixel/s and 135.0 GTexel/s for the NVIDIA, versus 13.60 GPixel/s and 40.80 GTexel/s for the AMD. The power draw is also different, 95W for the RTX A2000 Mobile and 75W for the Radeon Pro 555, meaning the NVIDIA card uses more power but delivers disproportionately more performance. The bus interface differs (PCIe 4.0 x16 for NVIDIA, PCIe 3.0 x8 for AMD), and the release dates are four years apart: April 2021 for the NVIDIA, June 2017 for the AMD. Both are end-of-life products with integrated (IGP) form factors and no power connectors.

FAQ

Q: Which GPU has higher FP32 performance?

A: The NVIDIA RTX A2000 Mobile, at 8.637 TFLOPS, versus 1,305.6 GFLOPS for the AMD Radeon Pro 555.

Q: What is the memory bandwidth difference?

A: The RTX A2000 Mobile has 192.0 GB/s bandwidth, while the Radeon Pro 555 has 81.60 GB/s, a 2.35x advantage for the NVIDIA part.

Q: Does the AMD Radeon Pro 555 support ray tracing?

A: No. It has no ray tracing cores, whereas the RTX A2000 Mobile has 20 RT cores.

Q: Which GPU has a higher average benchmark score?

A: The RTX A2000 Mobile, with 13,821 versus 13,407 for the Radeon Pro 555, a difference of 414 points.

Q: What is the transistor count for each?

A: The RTX A2000 Mobile has 8,700 million transistors, and the Radeon Pro 555 has 3,000 million.

Q: Which card is newer?

A: The RTX A2000 Mobile, released in April 2021, compared to June 2017 for the Radeon Pro 555.

The Verdict

The data is unambiguous: the NVIDIA RTX A2000 Mobile is the superior GPU for any workload measured in the shared benchmarks. It wins both head-to-head tests, leads in every architectural metric (cores, memory, bandwidth, TFLOPS), and holds a higher average benchmark score. The 383.8% OpenCL lead and 332% Vulkan lead are not incremental improvements but generational leaps, driven by a newer process node (8nm vs 14nm), a more advanced architecture (Ampere vs GCN 4.0), and dedicated hardware (RT cores, tensor cores) that the AMD part completely lacks.

The AMD Radeon Pro 555 is a legacy product from 2017, and its only measurable advantage is the exclusive Geekbench Metal score of 16,236, which has no direct NVIDIA counterpart. For users on macOS who require Metal support, this card may be the only option, but even that score is lower than the NVIDIA’s OpenCL and Vulkan results in absolute terms. The RTX A2000 Mobile should be the choice for anyone prioritizing compute performance, modern API support, or ray tracing capability. The Radeon Pro 555 is only relevant in narrow, ecosystem-specific scenarios where Metal is mandatory, and even then, its 54th percentile ranking versus the NVIDIA’s 55th suggests it is not a performance leader. Data-driven verdict: pick the RTX A2000 Mobile unless the software environment forces the AMD part.