AMD Radeon PRO W7400 vs NVIDIA GeForce RTX 4090 Mobile Comparison

FAQ

Q: What are the architectural generations of the AMD Radeon PRO W7400 and NVIDIA GeForce RTX 4090 Mobile?

A: The AMD Radeon PRO W7400 uses the RDNA 3.0 architecture with the Navi 33 chip, while the NVIDIA GeForce RTX 4090 Mobile uses the Ada Lovelace architecture with the AD103 chip.

Q: How do the memory configurations differ between these two GPUs?

A: The AMD Radeon PRO W7400 has 8 GB of GDDR6 memory on a 128-bit bus with 172.8 GB/s bandwidth. The NVIDIA GeForce RTX 4090 Mobile has 16 GB of GDDR6 memory on a 256-bit bus with 576.0 GB/s bandwidth.

Q: What is the transistor density difference between the two chips?

A: The NVIDIA GeForce RTX 4090 Mobile's AD103 chip has a transistor density of 121.1M per mm², while the AMD Radeon PRO W7400's Navi 33 chip has a density of 65.2M per mm². The NVIDIA chip also packs 45,900 million transistors on a 379 mm² die versus 13,300 million on 204 mm² for AMD.

Q: Which GPU has a higher pixel fill rate?

A: The NVIDIA GeForce RTX 4090 Mobile delivers a pixel rate of 189.8 GPixel/s, substantially higher than the AMD Radeon PRO W7400's 70.40 GPixel/s.

Q: What is the thermal design power for each GPU?

A: The AMD Radeon PRO W7400 has a TDP of 55 W and is a single-slot card with no power connectors. The NVIDIA GeForce RTX 4090 Mobile has a TDP of 120 W and is designed as an IGP (integrated graphics processor) for portable devices.

Q: How does the NVIDIA GPU score in the database benchmarks?

A: The GeForce RTX 4090 Mobile records an average benchmark score of 43,667, placing it in the 84th percentile of all GPUs. Its nearest rival, the NVIDIA RTX A6000, scores 44,075, which is 0.9% higher.

Architecture Differences

The AMD Radeon PRO W7400 and NVIDIA GeForce RTX 4090 Mobile represent two fundamentally different design approaches. The AMD part uses the RDNA 3.0 architecture, built on TSMC's 6 nm process node. Its Navi 33 chip, codenamed Hotpink Bonefish, belongs to the Radeon Pro Navi (Navi III Series) generation. The NVIDIA part uses the Ada Lovelace architecture on TSMC's 5 nm process, featuring the AD103 chip from the GeForce 40 Mobile generation.

The compute resources differ dramatically. The NVIDIA GPU contains 9,728 shading units, 304 texture mapping units, and 112 ROPs. The AMD GPU contains 1,792 shading units, 112 TMUs, and 64 ROPs. For ray tracing, NVIDIA provides 76 RT cores and 304 tensor cores, while AMD provides 28 RT cores and no tensor cores. These structural differences explain the large gap in raw throughput: NVIDIA's FP32 performance is 32.98 TFLOPS versus AMD's 7.885 TFLOPS, with both delivering FP16 at the same 1:1 ratio.

Memory architecture also diverges significantly. The NVIDIA GPU uses a 256-bit bus with 16 GB of GDDR6 memory, achieving 576.0 GB/s bandwidth. The AMD GPU uses a 128-bit bus with 8 GB of GDDR6 memory, achieving 172.8 GB/s. The memory clock differs as well: NVIDIA runs at 2250 MHz (18 Gbps effective), while AMD runs at 1350 MHz (10.8 Gbps effective).

The physical design reflects their intended deployment. The AMD card is a single-slot, 168 mm long, 69 mm high, and 20 mm wide board with four DisplayPort 2.1 outputs and a PCIe 4.0 x8 interface. It draws 55 W and requires no power connectors, with a suggested PSU of 250 W. The NVIDIA GPU is an IGP with no dimensions listed, no power connectors, and display outputs described as "Portable Device Dependent." It connects via PCIe 4.0 x16 and draws 120 W. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The production status for both is Active. The AMD card was released on 2025-08-02, succeeding the Radeon Pro Vega. The NVIDIA GPU was released on 2023-01-02, succeeding the GeForce 30 Mobile and succeeded by the GeForce 50 Mobile.

Head-to-Head Benchmarks

The database contains benchmark results for the NVIDIA GeForce RTX 4090 Mobile across multiple tests. The AMD Radeon PRO W7400 has no recorded benchmark scores in the database, so direct numerical comparisons rely entirely on the NVIDIA data and the architectural specifications.

The NVIDIA GPU's strongest results appear in compute-oriented workloads. In Geekbench OpenCL, it scores 180,831. In Geekbench Vulkan, it scores 170,774. These figures indicate strong general-purpose compute performance. The PassMark G3D score of 27,212 further confirms its rendering capability.

PassMark DirectX tests show varying results across API generations. The DirectX 9 score is 310, DirectX 10 is 173, DirectX 11 is 262, and DirectX 12 is 107. The GPU compute score in PassMark is 12,347, while the G2D score is 984. The average benchmark score across all tests is 43,667.

The nearest rivals in the database provide context for the NVIDIA GPU's standing. The NVIDIA RTX A6000 scores 44,075, which is 0.9% higher than the RTX 4090 Mobile. The NVIDIA Quadro M6000 scores 43,301, which is 0.8% lower. The NVIDIA GeForce RTX 5050 Mobile scores 43,268, which is 0.9% lower. The NVIDIA Quadro M6000 24 GB scores 43,262, also 0.9% lower. These margins place the RTX 4090 Mobile in a tight competitive cluster, with its nearest rival less than one percentage point away in either direction.

The 84th percentile ranking among all GPUs indicates that the RTX 4090 Mobile outperforms the majority of graphics cards in the database. The AMD Radeon PRO W7400 has a 50th percentile ranking, though with no benchmark scores recorded, this percentile reflects its specification-based position rather than measured performance.

The FP32 throughput difference is the most telling specification comparison. NVIDIA's 32.98 TFLOPS is roughly 4.2 times AMD's 7.885 TFLOPS. Texture rate shows a similar gap: NVIDIA at 515.3 GTexel/s versus AMD at 123.2 GTexel/s. Pixel rate differs by a factor of about 2.7: NVIDIA at 189.8 GPixel/s versus AMD at 70.40 GPixel/s.

Memory bandwidth is another area of significant divergence. NVIDIA's 576.0 GB/s is 3.3 times AMD's 172.8 GB/s. The 16 GB capacity versus 8 GB also matters for workloads that exceed the smaller frame buffer.

The transistor counts reflect the scale difference. NVIDIA's AD103 contains 45,900 million transistors on a 379 mm² die. AMD's Navi 33 contains 13,300 million on a 204 mm² die. The 5 nm process node for NVIDIA versus 6 nm for AMD contributes to the density difference: 121.1M per mm² versus 65.2M per mm².

The Verdict

The data indicates a clear performance hierarchy. The NVIDIA GeForce RTX 4090 Mobile delivers substantially higher throughput across every major metric: FP32 compute, texture fill, pixel fill, and memory bandwidth. Its 84th percentile ranking versus the AMD part's 50th percentile reinforces this position, though the AMD card has no measured benchmark scores in the database to provide direct confirmation.

For compute-heavy workloads such as GPU rendering, scientific simulation, or machine learning inference, the NVIDIA GPU's 32.98 TFLOPS FP32 performance and 304 tensor cores make it the stronger choice. The 76 RT cores also give it an advantage in ray-traced content. The 16 GB memory capacity and 576.0 GB/s bandwidth support larger datasets and higher-resolution textures.

The AMD Radeon PRO W7400 serves a different role. Its 55 W TDP, single-slot design, and lack of power connectors make it suitable for compact workstations with limited power budgets. The four DisplayPort 2.1 outputs support multi-display configurations. Its 8 GB memory and 172.8 GB/s bandwidth are adequate for less demanding professional workloads.

The release timeline also matters. The NVIDIA GPU launched in January 2023 and has since been succeeded by the GeForce 50 Mobile. The AMD GPU launched in August 2025 and remains active with no successor listed. Buyers considering the newer AMD part should weigh its lower power consumption and modern display outputs against the NVIDIA GPU's commanding performance lead.

For users prioritizing maximum performance in a portable form factor, the RTX 4090 Mobile is the data-supported choice. For users prioritizing low power draw, compact physical footprint, and professional display connectivity, the Radeon PRO W7400 offers those attributes, albeit with significantly lower compute capability.

Specification Differences

The two GPUs differ in nearly every specification category. The AMD Radeon PRO W7400 uses the Navi 33 chip with RDNA 3.0 architecture, while the NVIDIA GeForce RTX 4090 Mobile uses the AD103 chip with Ada Lovelace architecture. The process nodes differ: 6 nm for AMD versus 5 nm for NVIDIA, both fabricated by TSMC.

Transistor counts and die sizes diverge substantially. AMD packs 13,300 million transistors on a 204 mm² die, while NVIDIA packs 45,900 million on a 379 mm² die. Transistor density is 65.2M per mm² for AMD and 121.1M per mm² for NVIDIA.

Clock speeds differ. AMD runs at a base of 330 MHz with a boost of 1100 MHz. NVIDIA runs at a base of 1335 MHz with a boost of 1695 MHz. Memory clocks also differ: AMD at 1350 MHz (10.8 Gbps effective) versus NVIDIA at 2250 MHz (18 Gbps effective).

Memory configuration is a major differentiator. AMD has 8 GB GDDR6 on a 128-bit bus with 172.8 GB/s bandwidth. NVIDIA has 16 GB GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth.

Compute unit counts vary widely. AMD has 1,792 shading units, 112 TMUs, and 64 ROPs. NVIDIA has 9,728 shading units, 304 TMUs, and 112 ROPs. Ray tracing cores: 28 for AMD versus 76 for NVIDIA. Tensor cores: none for AMD versus 304 for NVIDIA.

Rates reflect the hardware differences. AMD achieves 70.40 GPixel/s pixel rate and 123.2 GTexel/s texture rate. NVIDIA achieves 189.8 GPixel/s and 515.3 GTexel/s. FP32 and FP16 performance are both 7.885 TFLOPS for AMD and 32.98 TFLOPS for NVIDIA.

Power and physical specifications differ. AMD has a 55 W TDP, single-slot width, no power connectors, and a suggested PSU of 250 W. NVIDIA has a 120 W TDP, IGP form factor, and no power connectors or suggested PSU. AMD measures 168 mm by 69 mm by 20 mm. NVIDIA has no listed dimensions.

Interface and outputs differ. AMD uses PCIe 4.0 x8 with four DisplayPort 2.1 outputs. NVIDIA uses PCIe 4.0 x16 with portable-device-dependent display outputs. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Release timing differs. AMD released on 2025-08-02, succeeding the Radeon Pro Vega. NVIDIA released on 2023-01-02, succeeding the GeForce 30 Mobile and succeeded by the GeForce 50 Mobile. Both are active in production. The AMD card has no successor listed.