AMD Radeon Pro 575X vs NVIDIA GeForce RTX 4090 Mobile Comparison

The NVIDIA GeForce RTX 4090 Mobile and AMD Radeon Pro 575X represent two very different eras of mobile graphics, separated by process node, architecture, and raw compute capability. The benchmark data shows a decisive performance gulf, with the RTX 4090 Mobile dominating in every shared metric, yet the Radeon Pro 575X retains a specific niche in the macOS ecosystem. This analysis breaks down the numbers from the FACT PACK to show exactly where each GPU stands.

Head-to-Head Benchmarks

The two GPUs share only two benchmark tests in the data set: Geekbench OpenCL and Geekbench Vulkan. In both, the NVIDIA GeForce RTX 4090 Mobile delivers a crushing victory. In Geekbench OpenCL, the RTX 4090 Mobile scores 180,831 against the Radeon Pro 575X’s 34,773. That is a delta of 420% — the NVIDIA part is more than five times faster in raw compute throughput. The gap is slightly narrower in Geekbench Vulkan, but still overwhelming: 170,774 versus 37,919, a 350.4% advantage for the RTX 4090 Mobile.

These are not marginal wins. The delta percentages indicate that the RTX 4090 Mobile is in a completely different performance class. To put the RTX 4090 Mobile’s score in context, its average benchmark score across all tests is 43,667, placing it in the 84th percentile of all GPUs. Its nearest rivals include the NVIDIA RTX A6000 (average score 44,075, delta -0.9%) and the NVIDIA Quadro M6000 (average score 43,301, delta 0.8%). The RTX 4090 Mobile sits within 1% of these professional desktop-class cards, which underscores its capability despite being a mobile IGP.

The Radeon Pro 575X, meanwhile, averages 39,116 across its three benchmarks (Geekbench Metal, OpenCL, and Vulkan), placing it in the 82nd percentile. Its nearest rivals are the AMD Radeon Pro 580X (average score 38,706, delta 1.1%) and the AMD Radeon Pro 575 (average score 39,555, delta -1.1%). The 575X is essentially neck-and-neck with its immediate sibling and the NVIDIA GeForce MX570 A (average score 38,691, delta 1.1%), indicating it is a mid-range part from its generation.

The most striking number in the head-to-head data is the 420% OpenCL delta. That means for every point the Radeon Pro 575X scores, the RTX 4090 Mobile scores over five. Even in Vulkan, where AMD’s GCN architecture historically performs relatively well, the RTX 4090 Mobile is 3.5 times faster. The data does not show a single benchmark where the Radeon Pro 575X wins; the wins tally is 2 for NVIDIA and 0 for AMD.

Where Each One Wins

Based strictly on the benchmark results, the NVIDIA GeForce RTX 4090 Mobile wins every head-to-head category. Its strength lies in raw compute and modern API performance. The 32.98 TFLOPS FP32 throughput, combined with 16 GB of GDDR6 memory on a 256-bit bus delivering 576.0 GB/s, makes it a formidable compute engine. The 84th percentile ranking and average score of 43,667 further confirm that it competes with top-tier workstation GPUs like the RTX A6000, which has an average score of 44,075 (delta -0.9%).

The Radeon Pro 575X, despite losing the shared benchmarks, has a clear advantage in one specific area: the Geekbench Metal test, which the RTX 4090 Mobile does not have a score for. The 575X scores 44,655 in Metal, which is its highest individual benchmark result. This is significant because Metal is Apple’s graphics API, and the 575X is part of the Radeon Pro Mac (500X Series) generation. The data does not include a Metal score for the RTX 4090 Mobile, so for macOS-specific workloads that rely on Metal, the 575X has a measurable performance data point that the NVIDIA part lacks.

Furthermore, the Radeon Pro 575X is an end-of-life product with a 150 W TDP, while the RTX 4090 Mobile has a lower 120 W TDP. That means the NVIDIA part delivers 420% higher OpenCL performance while consuming 20% less power according to the TDP figures. The RTX 4090 Mobile also benefits from a newer process node (5 nm TSMC versus 14 nm GlobalFoundries) and a much larger transistor budget (45,900 million versus 5,700 million), which explains the performance disparity. For users in the Windows/Linux ecosystem, the RTX 4090 Mobile is the clear winner across all shared benchmarks.

The Verdict

The data leads to an unambiguous verdict: the NVIDIA GeForce RTX 4090 Mobile is the superior GPU by a massive margin in every shared benchmark. Its Geekbench OpenCL score of 180,831 is 420% higher than the Radeon Pro 575X’s 34,773. Its Geekbench Vulkan score of 170,774 is 350.4% higher than the 575X’s 37,919. The RTX 4090 Mobile also ranks in the 84th percentile of all GPUs, with an average score of 43,667 that puts it within 0.9% of the NVIDIA RTX A6000. For any workload that uses OpenCL or Vulkan, the RTX 4090 Mobile is the only rational choice.

The Radeon Pro 575X should only be considered if the specific workload requires Apple’s Metal API, where it posts a score of 44,655. The FACT PACK shows no Metal score for the RTX 4090 Mobile, so the 575X has an uncontested data point there. However, the 575X loses every shared benchmark and ranks in the 82nd percentile with an average score of 39,116 — nearly 10% lower than the RTX 4090 Mobile’s average. The 575X is also an end-of-life product, while the RTX 4090 Mobile is active with a successor (GeForce 50 Mobile) listed.

For most users, the choice is clear. The RTX 4090 Mobile offers 16 GB of memory versus 4 GB, 576.0 GB/s bandwidth versus 217.0 GB/s, and 32.98 TFLOPS FP32 versus 4.489 TFLOPS. It supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the 575X supports DirectX 12 (12_0) and Vulkan 1.3. The RTX 4090 Mobile also has ray tracing cores (76) and tensor cores (304), which the 575X lacks entirely. The verdict: pick the RTX 4090 Mobile for any modern compute or gaming workload; pick the Radeon Pro 575X only if you are locked into a Mac environment that requires Metal, and even then, the data suggests it is a legacy part with no future.

FAQ

Q: How much faster is the NVIDIA GeForce RTX 4090 Mobile than the AMD Radeon Pro 575X in Geekbench OpenCL?

A: The RTX 4090 Mobile scores 180,831 versus 34,773 for the 575X, a delta of 420%. That means the NVIDIA GPU is over five times faster in this benchmark.

Q: Is there any benchmark where the AMD Radeon Pro 575X beats the RTX 4090 Mobile?

A: No. In the shared benchmarks (Geekbench OpenCL and Vulkan), the RTX 4090 Mobile wins both. However, the 575X has a Geekbench Metal score of 44,655, and the RTX 4090 Mobile has no Metal score listed, so the 575X is uncontested in that specific API.

Q: What are the nearest rivals to each GPU according to average benchmark score?

A: The RTX 4090 Mobile’s nearest rival is the NVIDIA RTX A6000, with an average score of 44,075 and a delta of -0.9%. The Radeon Pro 575X’s nearest rival is the AMD Radeon Pro 575, with an average score of 39,555 and a delta of -1.1%.

Q: Which GPU has more memory and bandwidth?

A: The RTX 4090 Mobile has 16 GB of GDDR6 memory on a 256-bit bus with 576.0 GB/s bandwidth. The Radeon Pro 575X has 4 GB of GDDR5 memory on a 256-bit bus with 217.0 GB/s bandwidth.

Q: What is the production status of each GPU?

A: The NVIDIA GeForce RTX 4090 Mobile is listed as Active, with a successor (GeForce 50 Mobile). The AMD Radeon Pro 575X is listed as End-of-life with no successor.

Q: Do both GPUs support ray tracing?

A: No. The RTX 4090 Mobile has 76 ray tracing cores and 304 tensor cores. The Radeon Pro 575X has no ray tracing cores and no tensor cores.

Architecture Differences

The two GPUs are built on fundamentally different architectures from different eras. The NVIDIA GeForce RTX 4090 Mobile uses the AD103 chip based on the Ada Lovelace architecture, fabricated on a 5 nm process at TSMC. It integrates 45,900 million transistors on a 379 mm² die, yielding a transistor density of 121.1M per mm². The AMD Radeon Pro 575X uses the Ellesmere chip based on the older GCN 4.0 architecture, fabricated on a 14 nm process at GlobalFoundries. It integrates 5,700 million transistors on a 232 mm² die, with a transistor density of 24.6M per mm². That means the RTX 4090 Mobile packs roughly eight times more transistors into a die that is only about 1.6 times larger.

The memory subsystems are also starkly different. The RTX 4090 Mobile offers 16 GB of GDDR6 memory with a 256-bit bus and 576.0 GB/s bandwidth, running at 2250 MHz (18 Gbps effective). The Radeon Pro 575X offers 4 GB of GDDR5 memory with a 256-bit bus and 217.0 GB/s bandwidth, running at 1695 MHz (6.8 Gbps effective). The NVIDIA part provides 2.65 times the bandwidth, which is critical for high-resolution textures and compute workloads.

Compute resources are equally lopsided. The RTX 4090 Mobile has 9,728 shading units, 304 TMUs, and 112 ROPs, with 76 ray tracing cores and 304 tensor cores. Its FP32 throughput is 32.98 TFLOPS, and its FP16 throughput is also 32.98 TFLOPS (1:1). The Radeon Pro 575X has 2,048 shading units, 128 TMUs, and 32 ROPs, with no ray tracing or tensor cores. Its FP32 throughput is 4.489 TFLOPS, and FP16 is the same at 4.489 TFLOPS (1:1). The RTX 4090 Mobile delivers 7.3 times the FP32 compute.

Power and interface differences also matter. The RTX 4090 Mobile has a 120 W TDP and uses a PCIe 4.0 x16 interface, while the Radeon Pro 575X has a 150 W TDP and uses PCIe 3.0 x16. Both are IGP (integrated GPU) parts with no power connectors and portable-device-dependent display outputs. The RTX 4090 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, whereas the 575X supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.3. The RTX 4090 Mobile was released in January 2023, while the 575X came out in March 2019, and the 575X is now end-of-life. The architectural gap — Ada Lovelace versus GCN 4.0 — explains why the RTX 4090 Mobile posts 420% higher OpenCL scores despite using 30 W less power.