AMD Radeon RX 7900M vs NVIDIA Rubin GPU Comparison

The Verdict

The AMD Radeon RX 7900M and the NVIDIA Rubin GPU occupy entirely different segments of the hardware spectrum, and the recorded data confirms they are not direct competitors. The RX 7900M is a mobile graphics processor from the Radeon RX 7000 series, built for portable devices with an integrated form factor, while the Rubin GPU is a server-class compute module from NVIDIA's Rubin architecture, designed for rack-scale deployments. The database shows the RX 7900M holds an average benchmark score of 97,487 and sits at the 94th percentile among all GPUs, meaning it outperforms the vast majority of recorded graphics hardware. The Rubin GPU, by contrast, has no benchmark entries in the database, an average score of zero, and sits at the 50th percentile, a placeholder value that reflects the absence of measured results rather than actual performance. The two parts differ by more than an order of magnitude in transistor count, memory capacity, power envelope, and physical format, so the data supports a clear separation: the RX 7900M is for high-end mobile rendering workloads, while the Rubin GPU is a datacenter compute accelerator with unverified graphics performance in this database.

The choice between them depends entirely on the deployment context. The RX 7900M delivers measurable graphics performance, with a 3DMark Steel Nomad DX12 score of 4,201, an OpenCL score of 129,499, and a Vulkan score of 158,760. It is an active, shipping product released in October 2023, and it uses a 180 W power envelope with no external power connectors, which aligns with its integrated mobile design. The Rubin GPU, scheduled for release at the end of December 2025, is a 2,300 W SXM module requiring a 2,700 W suggested power supply, has no display outputs, and exposes no graphics APIs (DirectX, OpenGL, and Vulkan are all listed as N/A). The data indicates the Rubin GPU is not intended for conventional graphics rendering at all, making any head-to-head comparison in gaming or workstation graphics moot. For any use case requiring a display output, graphics API support, or portable form factor, the RX 7900M is the only viable option in this pair. For massive parallel compute with HBM4 memory, the Rubin GPU is the architectural outlier, but its performance cannot be quantified from the recorded benchmarks.

Where Each One Wins

The RX 7900M wins in every measured benchmark category because it is the only one of the two with recorded results. In 3DMark Steel Nomad DX12, it scores 4,201 points, a figure that places it in the 94th percentile of all GPUs in the database. Its Geekbench OpenCL score of 129,499 and Geekbench Vulkan score of 158,760 further establish its capability in compute and graphics workloads accessible through industry-standard APIs. The nearest rivals in the database provide context: the AMD Radeon Pro VII averages 97,131 points, which is 0.4% below the RX 7900M's average score, and the NVIDIA Quadro RTX 6000 averages 101,872 points, which is 4.3% higher. The RX 7900M also leads the AMD Radeon Instinct MI60 by 5.4% and the NVIDIA RTX A4500 by 6.3% in average benchmark score. These deltas show the RX 7900M is competitive with professional workstation cards, sitting just below the Quadro RTX 6000 but above several other pro-grade accelerators.

The Rubin GPU wins in raw specification counts that matter for server-side compute. It carries 336,000 million transistors on a 1,456 mm² die, compared to the RX 7900M's 57,700 million transistors on a 529 mm² die. It has 28,672 shading units, 896 texture mapping units, and 896 tensor cores, dwarfing the RX 7900M's 4,608 shading units, 288 TMUs, and 72 ray tracing cores. The Rubin GPU's 288 GB of HBM4 memory with a 22.1 TB/s bandwidth and 16,384-bit bus is in a different class from the RX 7900M's 16 GB of GDDR6 with 576.0 GB/s bandwidth. However, these are specification advantages, not benchmark wins. The database records zero wins for the Rubin GPU in head-to-head benchmarks, as no such tests exist. The Rubin GPU's 130.0 TFLOPS of FP32 compute and 260.0 TFLOPS of FP16 compute are far higher than the RX 7900M's 38.52 TFLOPS FP32 and 77.05 TFLOPS FP16, but without benchmark scores, these numbers remain theoretical peak rates rather than observed performance.

Architecture Differences

The two GPUs come from different manufacturers, different process nodes, and different design philosophies. The AMD Radeon RX 7900M uses the Navi 31 chip with the RDNA 3.0 architecture, codenamed Plum Bonito, and belongs to the Navi Mobile (RX 7000M) generation. It is fabricated on a 5 nm process at TSMC, with a die size of 529 mm² and a transistor density of 109.1 million transistors per square millimeter. Its predecessor is Polaris Mobile, and it was released on October 18, 2023. The GPU has a base clock of 1,825 MHz and a boost clock of 2,090 MHz, with memory running at 2,250 MHz or 18 Gbps effective. The memory subsystem consists of 16 GB of GDDR6 on a 256-bit bus, delivering 576.0 GB/s of bandwidth. The RX 7900M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and it connects via PCIe 4.0 x16. Its display outputs are listed as portable device dependent, reflecting its integrated mobile design with an IGP slot width and no power connectors.

The NVIDIA Rubin GPU is a fundamentally different product. It uses the GR100 chip with the Rubin architecture and belongs to the Server Rubin (Rxx) generation. It is fabricated on a 3 nm process at TSMC, with a massive die size of 1,456 mm² and a transistor density of 230.8 million transistors per square millimeter. Its predecessor is Server Blackwell, and it is set for release on December 31, 2025. The base clock is 700 MHz with a boost clock of 2,267 MHz, and memory runs at 2,695 MHz or 10.8 Gbps effective. The memory subsystem is 288 GB of HBM4 on a 16,384-bit bus, delivering 22.1 TB/s of bandwidth, which is roughly 38 times the RX 7900M's bandwidth. The Rubin GPU has 28,672 shading units, 896 TMUs, 24 ROPs, and 896 tensor cores, but no ray tracing core count is listed. It has no display outputs, no graphics API support, and uses a 2,300 W power envelope with a suggested power supply of 2,700 W. It connects via PCIe 6.0 x16 and uses an SXM module slot width.

The transistor density difference is notable: the Rubin GPU packs 230.8 million transistors per square millimeter versus 109.1 million for the RX 7900M, enabled by the smaller 3 nm process node. The ROP count is also reversed: the RX 7900M has 192 ROPs while the Rubin GPU has only 24, which reflects the RX 7900M's focus on pixel output (401.3 GPixel/s) versus the Rubin GPU's compute orientation (54.41 GPixel/s). The texture rates tell a similar story: the RX 7900M delivers 601.9 GTexel/s, while the Rubin GPU delivers 2,031.2 GTexel/s.

FAQ

Q: Which GPU has better benchmark scores?

A: The AMD Radeon RX 7900M is the only one with recorded benchmarks. It scores 4,201 in 3DMark Steel Nomad DX12, 129,499 in Geekbench OpenCL, and 158,760 in Geekbench Vulkan. The NVIDIA Rubin GPU has no benchmark entries in the database, with an average score of zero.

Q: How does the RX 7900M compare to its nearest rivals?

A: The RX 7900M's average benchmark score is 97,487. It is 0.4% above the AMD Radeon Pro VII (97,131), 4.3% below the NVIDIA Quadro RTX 6000 (101,872), 5.4% above the AMD Radeon Instinct MI60 (92,466), and 6.3% above the NVIDIA RTX A4500 (91,671).

Q: What memory configurations do the two GPUs use?

A: The RX 7900M uses 16 GB of GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth. The Rubin GPU uses 288 GB of HBM4 on a 16,384-bit bus with 22.1 TB/s bandwidth.

Q: Can the Rubin GPU be used for gaming or standard graphics?

A: The database lists no display outputs for the Rubin GPU and all graphics APIs as N/A (DirectX, OpenGL, Vulkan). It is a server compute module, so conventional graphics workloads are not supported. The RX 7900M supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

Q: What are the power requirements for each GPU?

A: The RX 7900M has a 180 W TDP with no power connectors and an IGP slot width. The Rubin GPU has a 2,300 W TDP, uses an SXM module slot width, and has a suggested power supply of 2,700 W.

Q: When were these GPUs released?

A: The RX 7900M was released on October 18, 2023, and is listed as active. The Rubin GPU is scheduled for release on December 31, 2025, and is also listed as active.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries between the AMD Radeon RX 7900M and the NVIDIA Rubin GPU, and the wins count is zero for both sides. This absence is itself informative: the two products are so far apart in architecture, power class, and intended use that no shared benchmark workload has been recorded. The RX 7900M has three individual benchmark scores, all in consumer or professional graphics workloads. Its 3DMark Steel Nomad DX12 score of 4,201 is a moderate result for a mobile GPU at the 94th percentile of all GPUs, indicating strong DirectX 12 rendering performance. Its Geekbench Vulkan score of 158,760 is higher than its OpenCL score of 129,499, suggesting the architecture's Vulkan path delivers better observed throughput in that specific test. The average benchmark score of 97,487 places it between the Radeon Pro VII at 97,131 and the Quadro RTX 6000 at 101,872, with deltas of 0.4% and -4.3% respectively.

The Rubin GPU has no scores to compare, but its specification sheet reveals the intended performance envelope. Its FP32 throughput of 130.0 TFLOPS is 3.37 times the RX 7900M's 38.52 TFLOPS, and its FP16 throughput of 260.0 TFLOPS is 3.37 times the RX 7900M's 77.05 TFLOPS. The texture rate of 2,031.2 GTexel/s is 3.37 times the RX 7900M's 601.9 GTexel/s, and the memory bandwidth of 22.1 TB/s is roughly 38 times the RX 7900M's 576.0 GB/s. However, the Rubin GPU's pixel rate of 54.41 GPixel/s is only 13.6% of the RX 7900M's 401.3 GPixel/s, and its ROP count of 24 is 12.5% of the RX 7900M's 192. These figures indicate the Rubin GPU trades pixel-pushing capability for compute throughput: it has more shading units, TMUs, and tensor cores, but far fewer ROPs, resulting in a lower pixel fill rate despite a much larger die.

The RX 7900M's nearest rival data provides additional context for its standing. The Quadro RTX 6000, a professional workstation GPU, scores 4.3% higher on average, meaning the RX 7900M is competitive with but slightly behind that card in aggregate benchmarks. The Radeon Instinct MI60 and RTX A4500 trail by 5.4% and 6.3% respectively, positioning the RX 7900M in the upper tier of workstation-class accelerators. The Rubin GPU has no nearest rivals listed, which reflects the absence of benchmark data and the difficulty of situating it within the existing GPU landscape. The 50th percentile ranking assigned to the Rubin GPU is an artifact of zero recorded scores, not a measure of performance. Any comparison between these two GPUs must therefore rely on architectural specifications and intended use cases, not observed benchmark results.