AMD Radeon Pro 575X vs NVIDIA GeForce RTX 5080 Mobile Comparison

The AMD Radeon Pro 575X and the NVIDIA GeForce RTX 5080 Mobile occupy opposite ends of the GPU spectrum, despite their nearly identical overall percentile rankings. The data shows a decisive generational and architectural gulf, with the RTX 5080 Mobile delivering roughly five times the raw compute throughput in shared workloads, while the Radeon Pro 575X anchors itself as an end-of-life integrated part with a narrow legacy advantage in aggregate score stability.

FAQ

Q: How do the two GPUs compare in overall benchmark percentile ranking?

A: The AMD Radeon Pro 575X sits at the 82nd percentile of all GPUs, while the NVIDIA GeForce RTX 5080 Mobile ranks at the 81st percentile. Despite this near-identical overall standing, the RTX 5080 Mobile’s average benchmark score of 38,349 is actually lower than the Radeon Pro 575X’s average of 39,116, a quirk driven by the different benchmark suites used for each card.

Q: What is the biggest performance gap between the two in shared benchmarks?

A: In Geekbench OpenCL, the RTX 5080 Mobile scores 166,986 versus the Radeon Pro 575X’s 34,773, a delta of -79.2% for the AMD part. The Vulkan gap is nearly as large: 169,754 versus 37,919, a -77.7% difference.

Q: Which GPU has more shading units and what does that imply?

A: The RTX 5080 Mobile packs 7,680 shading units, while the Radeon Pro 575X has only 2,048. This 3.75x unit advantage directly explains the RTX 5080 Mobile’s 23.04 TFLOPS FP32 throughput versus the Radeon’s 4.489 TFLOPS.

Q: How do the memory subsystems differ?

A: The RTX 5080 Mobile uses 16 GB of GDDR7 on a 256-bit bus, delivering 896.0 GB/s bandwidth. The Radeon Pro 575X uses 4 GB of GDDR5 on the same 256-bit bus, yielding 217.0 GB/s. The NVIDIA card has 4x the capacity and over 4.1x the bandwidth.

Q: Which GPU is more power-efficient despite being faster?

A: The RTX 5080 Mobile has a 80 W TDP, while the Radeon Pro 575X draws 150 W. The RTX 5080 Mobile delivers roughly 4.8x the OpenCL score while consuming nearly half the power.

Q: Are there any benchmark tests where the Radeon Pro 575X wins?

A: No. In the head-to-head comparison, the Radeon Pro 575X records zero wins, while the RTX 5080 Mobile wins both shared tests (Geekbench OpenCL and Vulkan). However, the Radeon’s average score across its own three benchmarks (44,655 Metal, 34,773 OpenCL, 37,919 Vulkan) is higher than the RTX 5080 Mobile’s average across its ten tests, due to the different test sets.

The Verdict

The verdict is unambiguous for any workload that can use either GPU: the NVIDIA GeForce RTX 5080 Mobile is the superior part by every measurable compute metric in shared tests. Its OpenCL score of 166,986 dwarfs the Radeon’s 34,773, and its Vulkan score of 169,754 obliterates the 37,919 posted by the AMD card. The RTX 5080 Mobile also brings modern features—60 ray-tracing cores, 240 tensor cores, DirectX 12 Ultimate support, and PCIe 5.0—that the Radeon Pro 575X simply lacks.

The Radeon Pro 575X’s only claim to relevance is its higher overall percentile (82 vs. 81) and its higher average benchmark score (39,116 vs. 38,349), but those figures are artifacts of incompatible benchmark suites. Within the shared Geekbench tests, the RTX 5080 Mobile is between 77.7% and 79.2% faster. The Radeon Pro 575X is an end-of-life product from 2019; the RTX 5080 Mobile is an active 2025 release. For any new purchase, the RTX 5080 Mobile is the only rational choice. The Radeon Pro 575X should only be considered in legacy Mac systems where its specific GCN 4.0 architecture and integrated form factor are required.

Head-to-Head Benchmarks

The two shared benchmarks tell a story of overwhelming NVIDIA dominance. In Geekbench OpenCL, the RTX 5080 Mobile’s score of 166,986 is 132,213 points higher than the Radeon Pro 575X’s 34,773. This represents a -79.2% delta for the AMD card, meaning the RTX 5080 Mobile is approximately 4.8 times faster. The FP32 throughput difference corroborates this: 23.04 TFLOPS versus 4.489 TFLOPS.

Geekbench Vulkan shows a similar pattern. The RTX 5080 Mobile posts 169,754, while the Radeon Pro 575X manages 37,919, a -77.7% delta. This 131,835-point gap is slightly smaller in percentage terms than OpenCL but still represents a massive performance chasm. The RTX 5080 Mobile’s Vulkan 1.4 API support versus the Radeon’s Vulkan 1.3 further cements its modern advantage.

Notably, the Radeon Pro 575X’s own benchmark suite includes Geekbench Metal, where it scores 44,655. The RTX 5080 Mobile has no Metal result in the data. Similarly, the RTX 5080 Mobile has a Passmark G3D score of 27,711 and a Passmark GPU Compute score of 12,134, tests absent from the Radeon’s record. The absence of overlapping benchmarks beyond OpenCL and Vulkan means the head-to-head comparison is limited, but the two available data points are decisive.

Specification Differences

The specification sheet reveals a total generational overhaul. The Radeon Pro 575X uses a 14 nm process from GlobalFoundries, while the RTX 5080 Mobile uses a 5 nm process from TSMC. Transistor counts differ enormously: 5,700 million versus 45,600 million, a 8x increase. Die size grows from 232 mm² to 378 mm², and transistor density jumps from 24.6M/mm² to 120.6M/mm².

Memory configurations are starkly different. The Radeon Pro 575X has 4 GB of GDDR5 at 6.8 Gbps effective, while the RTX 5080 Mobile has 16 GB of GDDR7 at 28 Gbps effective. Both use a 256-bit bus, but bandwidth leaps from 217.0 GB/s to 896.0 GB/s. Clock speeds also diverge: the AMD card’s memory runs at 1695 MHz, while the NVIDIA card’s memory runs at 1750 MHz.

Compute resources favor the RTX 5080 Mobile across the board: 7,680 shading units versus 2,048, 240 TMUs versus 128, and 96 ROPs versus 32. Pixel rate jumps from 35.07 GPixel/s to 144.0 GPixel/s, and texture rate from 140.3 GTexel/s to 360.0 GTexel/s. The RTX 5080 Mobile adds 60 RT cores and 240 tensor cores, features the Radeon Pro 575X does not have at all.

Power and interface specs differ dramatically. The Radeon Pro 575X has a 150 W TDP, while the RTX 5080 Mobile draws only 80 W. The AMD card uses PCIe 3.0 x16, while the NVIDIA card uses PCIe 5.0 x16. Both are integrated (IGP) with portable-device-dependent display outputs and no power connectors. The Radeon supports DirectX 12 (12_0), while the RTX 5080 Mobile supports DirectX 12 Ultimate (12_2). Both support OpenGL 4.6, but Vulkan support differs: 1.3 for AMD, 1.4 for NVIDIA.

Architecture Differences

The architectural chasm is the root of all performance differences. The Radeon Pro 575X is built on GCN 4.0 with the Ellesmere chip, a 2019-era design for Radeon Pro Mac systems in the 500X series. The RTX 5080 Mobile uses Blackwell 2.0 with the GB203 chip, part of the GeForce 50 Mobile generation. The process node difference—14 nm versus 5 nm—explains the transistor density gap: 24.6M/mm² versus 120.6M/mm².

The Radeon Pro 575X has 2,048 shading units, 128 TMUs, and 32 ROPs, with no dedicated ray-tracing or tensor hardware. Its FP16 performance matches FP32 at 4.489 TFLOPS (1:1 ratio). The RTX 5080 Mobile has 7,680 shading units, 240 TMUs, and 96 ROPs, plus 60 RT cores and 240 tensor cores. Its FP16 performance also matches FP32 at 23.04 TFLOPS (1:1 ratio), but at 5.1x the raw throughput.

Memory architecture reflects the generational leap. GDDR5 at 217.0 GB/s versus GDDR7 at 896.0 GB/s is not just a speed bump; it is a fundamental change in memory technology. The bus interface also advances from PCIe 3.0 to PCIe 5.0, quadrupling the potential host-link bandwidth. The Radeon Pro 575X is end-of-life, while the RTX 5080 Mobile is an active product succeeding the GeForce 40 Mobile series.

Where Each One Wins

The RTX 5080 Mobile wins every shared benchmark and every meaningful performance category. In Geekbench OpenCL, it is 79.2% faster; in Geekbench Vulkan, it is 77.7% faster. Its 23.04 TFLOPS FP32 output is 5.1x the Radeon’s 4.489 TFLOPS. Its 896.0 GB/s memory bandwidth is 4.1x higher. Its 16 GB VRAM is 4x larger. Its pixel rate of 144.0 GPixel/s is 4.1x higher. Its texture rate of 360.0 GTexel/s is 2.6x higher. It has 60 RT cores and 240 tensor cores where the Radeon has none. It achieves all this at 80 W versus 150 W TDP.

The Radeon Pro 575X has no outright wins in the head-to-head data. Its only advantages are contextual: it holds a higher percentile rank (82 vs. 81) and a higher average benchmark score (39,116 vs. 38,349), but these stem from different test sets. Within its own benchmarks, it posts a respectable Metal score of 44,655, but no comparable NVIDIA Metal result exists for direct comparison.

For use-case selection, the RTX 5080 Mobile is the definitive choice for any modern compute, gaming, or ray-tracing workload. Its DirectX 12 Ultimate support, Vulkan 1.4, and dedicated RT/tensor cores make it suitable for current-generation titles and AI acceleration. The Radeon Pro 575X, confined to GCN 4.0 and DirectX 12_0, is only appropriate for legacy Mac environments where its specific integrated form factor and 150 W power envelope are mandatory. In any scenario where both are options, the data dictates the RTX 5080 Mobile without reservation.