AMD Radeon RX 7900M vs NVIDIA RTX 4000 Ada Generation Comparison

NVIDIA’s RTX 4000 Ada Generation and AMD’s Radeon RX 7900M are both TSMC 5 nm parts, but they represent fundamentally different design philosophies: a single-slot workstation accelerator versus a mobile integrated graphics processor. The benchmark data shows a clear split, with each card dominating a different API workload. The RTX 4000 Ada takes the OpenCL crown, while the RX 7900M answers decisively in Vulkan.

Head-to-Head Benchmarks

The two available head-to-head results paint a picture of specialization rather than overall superiority. In Geekbench OpenCL, the NVIDIA RTX 4000 Ada Generation scores 146,593, defeating the AMD Radeon RX 7900M’s 129,499 by a substantial 13.2 percent margin. This is a significant gap, placing the NVIDIA card firmly ahead in compute workloads that favor its architecture. However, the story flips entirely in the Geekbench Vulkan test. Here, the AMD Radeon RX 7900M scores 158,760, which is 22 percent higher than the RTX 4000 Ada’s 123,842. This is a commanding reversal, suggesting the RDNA 3.0 architecture has a distinct advantage in this particular graphics API.

The delta between the two cards in Vulkan is nearly double the delta in OpenCL, indicating that the AMD part’s strength is not just a marginal edge but a fundamental architectural trait. While the RTX 4000 Ada wins one benchmark and the RX 7900M wins the other, the magnitude of the Vulkan victory is more pronounced. The data suggests that for applications leveraging Vulkan, the RX 7900M offers a markedly higher performance ceiling, whereas the RTX 4000 Ada’s OpenCL lead, while solid, is comparatively narrower. The average benchmark scores further contextualize this: the RTX 4000 Ada’s average is 135,218, while the RX 7900M’s is much lower at 97,487, though this average is skewed by the RX 7900M’s inclusion of a 3DMark Steel Nomad DX12 score of 4,201, which is not directly comparable to the Geekbench results.

Looking at the broader competitive landscape from the nearestRivals data, the RTX 4000 Ada sits in the 95th percentile of all GPUs, with its average score of 135,218 placing it just 0.1 percent behind the AMD Radeon PRO W6800 (135,396) and statistically tied with the NVIDIA A10M (135,230). This shows the RTX 4000 Ada is a top-tier performer in its segment. The RX 7900M, at the 94th percentile, has an average score of 97,487, which is 4.3 percent behind the NVIDIA Quadro RTX 6000 (101,872) but 6.3 percent ahead of the NVIDIA RTX A4500 (91,671). This places the RX 7900M in a different performance tier when considering its full benchmark suite, despite its strong Vulkan showing.

The Verdict

The data supports a clear, use-case-driven verdict. For users whose workloads are dominated by OpenCL compute, the NVIDIA RTX 4000 Ada Generation is the definitive choice, offering a 13.2 percent performance advantage in that specific test. Its higher average benchmark score of 135,218, compared to the RX 7900M’s 97,487, also indicates more consistent performance across a broader range of tested scenarios. The RTX 4000 Ada’s position in the 95th percentile versus the RX 7900M’s 94th, while close, further reinforces its edge in overall compute capability.

Conversely, for applications that are heavily optimized for Vulkan, the AMD Radeon RX 7900M is the clear winner, with its 22 percent lead in the Geekbench Vulkan test being too large to ignore. This suggests that if a user’s primary software stack relies on Vulkan for rendering or compute, the RX 7900M will deliver noticeably better performance. The RTX 4000 Ada’s Vulkan score of 123,842 is its weaker result, falling well below its OpenCL score, while the RX 7900M’s Vulkan score of 158,760 is its strongest, surpassing its OpenCL score by a wide margin. The verdict is not about which GPU is universally faster, but about matching the hardware to the software environment. The RTX 4000 Ada is the safer pick for mixed or OpenCL-centric workloads, while the RX 7900M is the specialist for Vulkan-centric ones.

Architecture Differences

The two GPUs are built on vastly different architectures, which explains their divergent benchmark results. The NVIDIA RTX 4000 Ada is based on the AD104 chip, part of the Ada Lovelace architecture, while the AMD Radeon RX 7900M uses the Navi 31 chip, built on RDNA 3.0. Both are fabricated on a 5 nm process by TSMC, but the physical designs diverge significantly. The AD104 chip has 35,800 million transistors on a 294 mm² die, resulting in a transistor density of 121.8 million per mm². In contrast, the Navi 31 chip is substantially larger, with 57,700 million transistors on a 529 mm² die, though its transistor density is lower at 109.1 million per mm². This means AMD’s chip is physically larger and packs more transistors overall, but NVIDIA’s design is denser.

The compute architectures are fundamentally different in their throughput strategies. The RTX 4000 Ada features 6,144 shading units, 192 texture mapping units (TMUs), and 64 render output units (ROPs). It also includes 48 RT cores and 192 tensor cores, the latter being a key feature that the RX 7900M lacks entirely. The RX 7900M, on the other hand, has fewer shading units at 4,608, but more TMUs at 288 and significantly more ROPs at 192. It also has 72 RT cores, but no tensor cores. This configuration gives the RX 7900M a much higher pixel rate of 401.3 GPixel/s compared to the RTX 4000 Ada’s 139.2 GPixel/s, and a higher texture rate of 601.9 GTexel/s versus 417.6 GTexel/s. The FP32 throughput also favors AMD, with the RX 7900M delivering 38.52 TFLOPS against the RTX 4000 Ada’s 26.73 TFLOPS. The RX 7900M also excels in FP16, achieving 77.05 TFLOPS with a 2:1 ratio, while the RTX 4000 Ada matches its FP32 rate at 26.73 TFLOPS with a 1:1 ratio.

The memory subsystem further separates the two. The RTX 4000 Ada has 20 GB of GDDR6 memory on a 160-bit bus, yielding a bandwidth of 360.0 GB/s. The RX 7900M has 16 GB of GDDR6 memory on a wider 256-bit bus, delivering a much higher bandwidth of 576.0 GB/s. This 60 percent bandwidth advantage for AMD likely contributes to its strong Vulkan performance, which can be sensitive to memory throughput. The memory clock is identical at 2250 MHz (18 Gbps effective) for both, so the bandwidth difference is solely due to the bus width.

Specification Differences

The specification sheets reveal several key differences beyond the core architecture. The clock speeds differ, with the RX 7900M having a higher base clock of 1825 MHz compared to the RTX 4000 Ada’s 1500 MHz, though the RTX 4000 Ada has a slightly higher boost clock of 2175 MHz versus the RX 7900M’s 2090 MHz. The power profiles are also distinct: the RTX 4000 Ada has a TDP of 130 W and requires a single 16-pin power connector with a suggested PSU of 300 W, whereas the RX 7900M has a higher TDP of 180 W and, being an IGP, has no power connectors and no suggested PSU listed. This reflects their different physical forms: the RTX 4000 Ada is a single-slot card measuring 245 mm (9.6 inches) in length and 112 mm (4.4 inches) in height, while the RX 7900M is listed as an IGP with no dimensions, indicating it is designed for mobile integration.

The display outputs also differ significantly. The RTX 4000 Ada provides four DisplayPort 1.4a outputs, making it a direct-fit for desktop workstation setups with multiple monitors. The RX 7900M’s display outputs are listed as "Portable Device Dependent," meaning they vary based on the laptop or mobile device it is integrated into. Both cards support PCIe 4.0 x16 interfaces and share the same API support for DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The release dates are close, with the RTX 4000 Ada launching on 2023-08-08 and the RX 7900M on 2023-10-18, and both are listed as Active in production. The RTX 4000 Ada’s predecessor is Workstation Ampere and its successor is Blackwell PRO W, while the RX 7900M’s predecessor is Polaris Mobile and it has no listed successor.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The NVIDIA RTX 4000 Ada Generation has a significantly higher average benchmark score of 135,218, compared to the AMD Radeon RX 7900M’s 97,487.

Q: How much faster is the AMD Radeon RX 7900M in Vulkan?

A: The AMD Radeon RX 7900M scores 158,760 in the Geekbench Vulkan test, which is 22 percent higher than the NVIDIA RTX 4000 Ada Generation’s score of 123,842.

Q: What is the memory bandwidth difference between the two cards?

A: The AMD Radeon RX 7900M has a memory bandwidth of 576.0 GB/s, while the NVIDIA RTX 4000 Ada Generation has a bandwidth of 360.0 GB/s, giving the AMD card a substantial advantage.

Q: Which GPU has more RT (ray tracing) cores?

A: The AMD Radeon RX 7900M has 72 RT cores, while the NVIDIA RTX 4000 Ada Generation has 48 RT cores.

Q: Does the NVIDIA RTX 4000 Ada Generation support tensor cores?

A: Yes, the NVIDIA RTX 4000 Ada Generation has 192 tensor cores, while the AMD Radeon RX 7900M has none listed.

Q: What are the power consumption figures for each GPU?

A: The NVIDIA RTX 4000 Ada Generation has a TDP of 130 W, while the AMD Radeon RX 7900M has a higher TDP of 180 W.

Where Each One Wins

The benchmark data clearly delineates the strengths of each GPU. The NVIDIA RTX 4000 Ada Generation wins in the Geekbench OpenCL test, scoring 146,593 against the RX 7900M’s 129,499, a 13.2 percent advantage. This makes it the preferred choice for OpenCL-based compute tasks, such as scientific simulations, data processing, or any professional workload that leverages this API. Its higher average benchmark score of 135,218 also suggests it offers more balanced performance across a wider variety of tests, making it a more versatile workstation card. The RTX 4000 Ada’s 20 GB of memory, while on a narrower bus, provides a larger capacity for large datasets, and its single-slot form factor with four DisplayPort 1.4a outputs makes it ideal for multi-display desktop configurations.

The AMD Radeon RX 7900M wins decisively in the Geekbench Vulkan test, with a score of 158,760 versus the RTX 4000 Ada’s 123,842, a 22 percent lead. This makes it the clear winner for Vulkan-native applications, including many modern games and emerging graphics workloads. Its significantly higher memory bandwidth of 576.0 GB/s, due to the wider 256-bit bus, is a key factor in this victory. The RX 7900M also excels in raw throughput metrics, with higher FP32 (38.52 TFLOPS) and pixel rates (401.3 GPixel/s), which can benefit certain rendering tasks. As an IGP with no power connectors, it is designed for mobile platforms, so it wins in the category of high-performance mobile graphics, where its 180 W TDP is accommodated within a laptop chassis. For users prioritizing Vulkan performance in a portable form factor, the RX 7900M is the data-backed choice.