AMD Radeon Pro W6600M vs NVIDIA GeForce RTX 5090 Mobile Comparison

Head-to-Head Benchmarks

The database contains two compute-focused benchmark comparisons between these mobile GPUs, and the results are unambiguous. In Geekbench OpenCL, the NVIDIA GeForce RTX 5090 Mobile scores 201,834 against the AMD Radeon Pro W6600M's 56,140. That is a 72.2% advantage for NVIDIA in this workload, a margin that places the two parts in completely different performance tiers. The AMD part trails by a wide margin, and the recorded delta of -72.2% is the largest gap in any test shared by both products.

The Vulkan results tell a similar story, though the relative gap narrows slightly. The RTX 5090 Mobile posts 198,405 in Geekbench Vulkan, while the Radeon Pro W6600M reaches 67,652. The delta here is -65.9% for AMD, meaning NVIDIA still holds a commanding lead, but the Vulkan API appears to be somewhat more favorable to the RDNA 2.0 architecture than OpenCL is. Even with that improvement, the NVIDIA part finishes roughly three times higher in raw score.

Looking at the broader database averages, the RTX 5090 Mobile has an average benchmark score of 45,152 across all recorded tests, while the W6600M averages 61,896 across its two submitted workloads. This apparent inversion is explained by the test mix: the AMD card's average is computed only from its Geekbench results, while the NVIDIA card's average includes multiple Passmark subtests with lower raw scores. The head-to-head data, which uses identical test conditions for both cards, is the more reliable comparison.

The nearest rivals for each card provide useful context for where these parts sit in the wider market. The AMD Radeon Pro W6600M sits at the 89th percentile of all GPUs, with its closest competitor being the AMD Radeon 8050S at an average score of 62,108, a negligible 0.3% difference. The NVIDIA GeForce RTX 5090 Mobile, despite its massive head-to-head win, only reaches the 84th percentile, with its nearest rival being the AMD Radeon Pro 5500 XT at 45,384, a 0.5% gap. The percentile difference is curious: the W6600M ranks higher globally despite losing decisively in direct comparison, which reflects how different benchmark suites weight different workloads.

Where Each One Wins

The data shows a clean split. The NVIDIA GeForce RTX 5090 Mobile wins every shared benchmark against the AMD Radeon Pro W6600M, taking both Geekbench OpenCL and Geekbench Vulkan. There are no recorded tests where the AMD part comes out ahead. The wins tally in the database shows 0 for AMD and 2 for NVIDIA.

For the RTX 5090 Mobile, its strengths lie in raw compute throughput. The card delivers 31.80 TFLOPS of FP32 performance and the same figure for FP16 at a 1:1 ratio, meaning there is no half-rate penalty for FP16 workloads. This makes it suited for compute-heavy tasks like machine learning inference, scientific simulation, and rendering workloads that leverage FP16 or mixed-precision arithmetic. Its 328 tensor cores and 82 RT cores further extend its reach into AI acceleration and ray-traced rendering.

The AMD Radeon Pro W6600M, while losing the head-to-head, still has attributes worth noting. Its 7.290 TFLOPS FP32 and 14.58 TFLOPS FP16 (at 2:1 ratio) are respectable for a 90 W mobile part, and its 28 RT cores provide hardware ray tracing support. The card also supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, matching the NVIDIA card's API support exactly. For workloads where the NVIDIA card's massive compute advantage is not the limiting factor, the AMD part remains functional, but the benchmark data does not identify any specific test where it wins outright.

The practical takeaway is that the RTX 5090 Mobile is the superior choice for any compute-bound application, while the W660M is a more modest performer that can handle general graphics workloads but will struggle where the NVIDIA card excels. The 89th percentile ranking for AMD versus 84th for NVIDIA indicates that the AMD card's average score benefits from a more favorable test selection, but direct comparison removes that ambiguity.

Architecture Differences

The two GPUs come from different architectural generations and are built on different process nodes. The AMD Radeon Pro W6600M uses the Navi 23 chip with RDNA 2.0 architecture, fabricated on TSMC's 7 nm process. The die measures 237 mm² and contains 11,060 million transistors, giving a transistor density of 46.7 million per square millimeter. The NVIDIA GeForce RTX 5090 Mobile uses the GB203 chip with Blackwell 2.0 architecture, fabricated on TSMC's 5 nm process. Its die is larger at 378 mm² but packs 45,600 million transistors, resulting in a density of 120.6 million per square millimeter, roughly 2.6 times higher than the AMD part.

Memory configurations differ substantially. The AMD card features 8 GB of GDDR6 on a 128-bit bus, with memory clocked at 1750 MHz and 14 Gbps effective, yielding 224.0 GB/s of bandwidth. The NVIDIA card offers 24 GB of GDDR7 on a 256-bit bus, with memory at 1750 MHz and 28 Gbps effective, delivering 896.0 GB/s of bandwidth, exactly four times the AMD card's throughput. This memory advantage is critical for large datasets, high-resolution textures, and compute workloads that spill beyond the AMD card's 8 GB frame buffer.

Compute resources are dramatically different. The AMD card has 1,792 shading units, 112 texture mapping units, 64 ROPs, and 28 ray tracing cores. The NVIDIA card has 10,496 shading units, 328 TMUs, 112 ROPs, 82 RT cores, and 328 tensor cores. The NVIDIA card's shading unit count is over 5.8 times higher, and its texture rate of 496.9 GTexel/s dwarfs the AMD card's 227.8 GTexel/s. Pixel rates are closer but still favor NVIDIA: 169.7 GPixel/s versus 130.2 GPixel/s.

Clock speeds show an interesting inversion. The AMD card has a higher base clock of 1224 MHz and a higher boost clock of 2034 MHz, while the NVIDIA card boosts to only 1515 MHz from a 990 MHz base. The NVIDIA card compensates with vastly more execution units, so its lower clocks still produce far higher aggregate throughput. Power envelopes are similar, with the AMD card rated at 90 W TDP and the NVIDIA card at 95 W, both using integrated graphics processor (IGP) form factors with no power connectors. The bus interfaces differ, with PCIe 4.0 x16 on AMD and PCIe 5.0 x16 on NVIDIA, though real-world impact depends on system integration.

The NVIDIA card's Blackwell architecture adds tensor cores, which the RDNA 2.0 chip lacks entirely. This makes the RTX 5090 Mobile uniquely suited for AI and deep learning tasks that rely on tensor operations. The AMD card, by contrast, has no equivalent hardware and must handle such workloads through its general-purpose shaders, which is significantly less efficient.

The release timelines also differ: the AMD part launched on June 7, 2021, and is now marked as end-of-life, while the NVIDIA card launched on March 26, 2025, and remains active. The AMD card's predecessor was the FirePro Mobile line, while the NVIDIA card's predecessor was the GeForce 40 Mobile series.

FAQ

Q: Which GPU has higher memory bandwidth?

A: The NVIDIA GeForce RTX 5090 Mobile, with 896.0 GB/s from 24 GB of GDDR7 on a 256-bit bus. The AMD Radeon Pro W6600M provides 224.0 GB/s from 8 GB of GDDR6 on a 128-bit bus.

Q: How do the two cards compare in Geekbench OpenCL?

A: The RTX 5090 Mobile scores 201,834 versus 56,140 for the W6600M, a 72.2% advantage for NVIDIA. The Vulkan test shows a similar pattern: 198,405 for NVIDIA versus 67,652 for AMD, a 65.9% gap.

Q: What are the process node differences?

A: The AMD card uses TSMC's 7 nm process, while the NVIDIA card uses TSMC's 5 nm process. The NVIDIA chip has a transistor density of 120.6M per mm² versus 46.7M per mm² for AMD.

Q: Does the AMD card support ray tracing?

A: Yes, the Radeon Pro W6600M has 28 ray tracing cores and supports DirectX 12 Ultimate (12_2). The NVIDIA card has 82 RT cores and also supports DirectX 12 Ultimate.

Q: Which card has tensor cores?

A: Only the NVIDIA GeForce RTX 5090 Mobile. It has 328 tensor cores, while the AMD Radeon Pro W6600M has no tensor core hardware listed in the database.

Q: What is the average benchmark score for each card?

A: The AMD card averages 61,896 across its recorded benchmarks, while the NVIDIA card averages 45,152. However, these averages include different test sets, and direct head-to-head comparisons show NVIDIA winning both shared tests.

The Verdict

The data supports one clear conclusion for compute-focused workloads: the NVIDIA GeForce RTX 5090 Mobile is in a different class. Its Geekbench OpenCL score is 3.6 times higher than the AMD card's, and its Vulkan score is 2.9 times higher. The 72.2% and 65.9% deltas in its favor are decisive margins that no architectural nuance can overcome. For anyone running OpenCL or Vulkan compute tasks, the RTX 5090 Mobile is the only rational choice between these two.

The AMD Radeon Pro W6600M, despite its higher global percentile ranking of 89 versus 84, does not win a single shared benchmark. Its higher average score of 61,896 comes from a narrower test selection that does not include the Passmark suite where the NVIDIA card scores 30,034 in G3D and 13,401 in GPU compute. The AMD card's strengths are relative: a lower 90 W TDP, a smaller die, and a simpler architecture that may be easier to integrate into thin-and-light mobile designs. It also carries end-of-life status, meaning no further driver optimizations are expected.

The NVIDIA card's 24 GB of GDDR7 memory and 896.0 GB/s bandwidth make it suitable for large model inference and high-resolution texture workloads that would exhaust the AMD card's 8 GB frame buffer. Its 328 tensor cores provide dedicated hardware for AI acceleration, something the AMD part lacks entirely. The 95 W TDP is only 5 W higher than the AMD card, so the performance advantage does not come at a massive power cost.

For buyers prioritizing compute performance in a mobile workstation or gaming laptop, the RTX 5090 Mobile is the clear winner. For buyers with legacy software that only targets RDNA 2.0 optimizations, or who need a lower-power integrated GPU, the Radeon Pro W6600M remains functional but is outperformed in every shared measurement. The database's head-to-head results leave no ambiguity: NVIDIA wins both tests, and wins them decisively.