AMD Radeon RX 7900M vs NVIDIA N1 20SM Comparison

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark results between the AMD Radeon RX 7900M and the NVIDIA N1 20SM. The NVIDIA N1 20SM has no benchmark entries in the database, resulting in an average benchmark score of 0 and a 50th percentile ranking among all GPUs. The AMD Radeon RX 7900M, by contrast, has three recorded benchmark scores and an average benchmark score of 97,487, placing it in the 94th percentile of all GPUs.

Looking at the RX 7900M's individual results, it scores 4,201 in 3DMark Steel Nomad DX12, 129,499 in Geekbench OpenCL, and 158,760 in Geekbench Vulkan. These results position it well above the N1 20SM, which has no comparable scores. The RX 7900M's nearest rivals in the database are the AMD Radeon Pro VII with an average score of 97,131 (a 0.4% advantage for the RX 7900M), the NVIDIA Quadro RTX 6000 with 101,872 (the RX 7900M trails by 4.3%), the AMD Radeon Instinct MI60 with 92,466 (the RX 7900M leads by 5.4%), and the NVIDIA RTX A4500 with 91,671 (the RX 7900M leads by 6.3%). The N1 20SM has no nearest rivals listed, meaning the database has no comparative data to anchor its performance.

Since the N1 20SM lacks any benchmark scores, the head-to-head comparison is one-sided. The RX 7900M delivers substantial compute performance, with FP32 throughput of 38.52 TFLOPS and FP16 throughput of 77.05 TFLOPS using a 2:1 ratio. The N1 20SM provides 12.01 TFLOPS for both FP32 and FP16 at a 1:1 ratio. This means the RX 7900M offers roughly three times the FP32 throughput on paper. Pixel rate favors the RX 7900M at 401.3 GPixel/s versus 56.30 GPixel/s for the N1 20SM. Texture rate also favors the RX 7900M at 601.9 GTexel/s versus 375.4 GTexel/s.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon RX 7900M has an average benchmark score of 97,487, while the NVIDIA N1 20SM has an average benchmark score of 0, as the database contains no benchmark entries for it.

Q: How do the shading unit counts compare?

A: The RX 7900M contains 4,608 shading units, whereas the N1 20SM contains 2,560 shading units, a difference of 2,048 units.

Q: What is the memory capacity difference?

A: The RX 7900M has 16 GB of GDDR6 memory, while the N1 20SM has 128 GB of LPDDR5X memory, a 112 GB difference.

Q: Which GPU has higher memory bandwidth?

A: The RX 7900M has a memory bandwidth of 576.0 GB/s, more than double the N1 20SM's 273.2 GB/s, despite the N1 20SM having much larger capacity.

Q: What are the process node specifications for each?

A: Both GPUs are manufactured on a 5 nm process at TSMC. The RX 7900M uses the Navi 31 chip with RDNA 3.0 architecture, while the N1 20SM uses the GB20B chip with Blackwell 2.0 architecture.

Q: Do either of these GPUs have tensor cores?

A: The RX 7900M has no tensor cores listed in the database, while the N1 20SM has 80 tensor cores.

Where Each One Wins

The AMD Radeon RX 7900M wins in every measured compute category where data exists. Its FP32 throughput of 38.52 TFLOPS dwarfs the N1 20SM's 12.01 TFLOPS, and its FP16 output of 77.05 TFLOPS is over six times the N1 20SM's 12.01 TFLOPS at the 1:1 ratio. The RX 7900M also leads in pixel rate (401.3 GPixel/s versus 56.30 GPixel/s), texture rate (601.9 GTexel/s versus 375.4 GTexel/s), and memory bandwidth (576.0 GB/s versus 273.2 GB/s). With 72 ray tracing cores and 192 ROPs, the RX 7900M is built for graphics-heavy workloads. Its 94th percentile ranking confirms strong overall standing relative to all GPUs in the database.

The NVIDIA N1 20SM wins in memory capacity with 128 GB of LPDDR5X, which is eight times the RX 7900M's 16 GB. It also has 80 tensor cores, which the RX 7900M lacks entirely, suggesting a different workload orientation. The N1 20SM has 20 ray tracing cores and 160 texture mapping units. Its PCIe 5.0 x16 bus interface is newer than the RX 7900M's PCIe 4.0 x16 interface. The N1 20SM also has a higher boost clock at 2346 MHz versus 2090 MHz, though its base clock is much lower at 741 MHz versus 1825 MHz.

Specification Differences

The two GPUs differ across nearly every major specification. The RX 7900M belongs to the Radeon RX 7000 series and uses the Navi 31 chip with RDNA 3.0 architecture and the Plum Bonito codename. The N1 20SM uses the GB20B chip with Blackwell 2.0 architecture and no listed codename. The RX 7900M has 57,700 million transistors on a 529 mm² die, while the N1 20SM has unknown transistor count on a 382 mm² die. Transistor density for the RX 7900M is 109.1M per mm², with no density listed for the N1 20SM.

Memory configurations differ substantially. The RX 7900M uses 16 GB of GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth and 2250 MHz memory clock (18 Gbps effective). The N1 20SM uses 128 GB of LPDDR5X on a 256-bit bus with 273.2 GB/s bandwidth and 1067 MHz memory clock (8.5 Gbps effective). Compute units also differ: the RX 7900M has 4,608 shading units, 288 TMUs, 192 ROPs, and 72 RT cores. The N1 20SM has 2,560 shading units, 160 TMUs, 24 ROPs, 20 RT cores, and 80 tensor cores. The RX 7900M has no tensor cores listed.

Clock behavior differs significantly. The RX 7900M runs at 1825 MHz base and 2090 MHz boost. The N1 20SM runs at 741 MHz base and 2346 MHz boost. API support also diverges: the RX 7900M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the N1 20SM lists N/A for DirectX, OpenGL, and Vulkan. Power specifications are incomplete for both: the RX 7900M has a TDP of 180 W, while the N1 20SM has an unknown TDP. Both are IGP slot width with no power connectors. The RX 7900M uses PCIe 4.0 x16, while the N1 20SM uses PCIe 5.0 x16. Display outputs for the RX 7900M are portable device dependent, while the N1 20SM has one HDMI output. Release dates differ: the RX 7900M launched on 2023-10-18, and the N1 20SM is dated 2026-05-31. The RX 7900M's predecessor is Polaris Mobile, while the N1 20SM has no predecessor listed.

Architecture Differences

The RX 7900M is built on RDNA 3.0 architecture, AMD's design for the Navi Mobile generation. It uses the Navi 31 chip, produced on a 5 nm process at TSMC with 57,700 million transistors. The N1 20SM uses Blackwell 2.0 architecture with the GB20B chip, also on a 5 nm process at TSMC, but with unknown transistor count. The RX 7900M has a larger die at 529 mm² compared to the N1 20SM's 382 mm², which aligns with the former's higher transistor count and density of 109.1M per mm².

The RX 7900M's compute layout emphasizes graphics: 4,608 shading units, 288 TMUs, 192 ROPs, and 72 RT cores. The N1 20SM's layout is smaller in most graphics categories but includes 80 tensor cores, indicating a design focus on AI and tensor workloads. The RX 7900M delivers FP16 at a 2:1 ratio relative to FP32, achieving 77.05 TFLOPS, while the N1 20SM delivers FP16 at a 1:1 ratio, matching its FP32 figure of 12.01 TFLOPS. This suggests the RX 7900M uses a shader-based FP16 path, whereas the N1 20SM does not double FP16 throughput. The N1 20SM's 128 GB memory capacity points toward large dataset residency, while the RX 7900M's 576.0 GB/s bandwidth supports high-throughput graphics streaming. The RX 7900M's 24 ROPs difference versus the N1 20SM is notable: 192 versus 24, a factor of eight.

The Verdict

The data indicates that the AMD Radeon RX 7900M is the stronger graphics performer by every measured metric in the database. Its average benchmark score of 97,487 places it in the 94th percentile, while the N1 20SM has no recorded benchmarks and sits at the 50th percentile. The RX 7900M leads in FP32 compute (38.52 TFLOPS versus 12.01 TFLOPS), FP16 compute (77.05 TFLOPS versus 12.01 TFLOPS), pixel rate (401.3 GPixel/s versus 56.30 GPixel/s), texture rate (601.9 GTexel/s versus 375.4 GTexel/s), memory bandwidth (576.0 GB/s versus 273.2 GB/s), shading units (4,608 versus 2,560), TMUs (288 versus 160), ROPs (192 versus 24), and RT cores (72 versus 20). It also has a higher base clock (1825 MHz versus 741 MHz) and a lower boost clock (2090 MHz versus 2346 MHz).

The NVIDIA N1 20SM offers advantages in memory capacity (128 GB versus 16 GB), tensor core presence (80 versus none), and a newer PCIe 5.0 x16 interface. Its higher boost clock of 2346 MHz and larger memory pool suggest a different use case. However, without any benchmark scores in the database, its actual performance cannot be verified. The RX 7900M's nearest rival comparisons show it within 4.3% of the NVIDIA Quadro RTX 6000 and ahead of the AMD Radeon Pro VII, AMD Radeon Instinct MI60, and NVIDIA RTX A4500 by margins ranging from 0.4% to 6.3%. For users prioritizing measured graphics performance, the RX 7900M is the clear choice based on available data. For applications requiring large memory capacity and tensor processing, the N1 20SM presents a distinct configuration, though its lack of benchmark results leaves its real-world standing unquantified.