NVIDIA GeForce RTX 5080 Mobile vs NVIDIA N1X 48SM Comparison

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results for the NVIDIA GeForce RTX 5080 Mobile and the NVIDIA N1X 48SM. The RTX 5080 Mobile has a full suite of recorded test scores, while the N1X 48SM has no benchmark entries in the database. This makes a conventional score-to-score comparison impossible.

The RTX 5080 Mobile records an average benchmark score of 38,349 across its test suite. Its individual results include 4,952 in 3DMark Steel Nomad DX12, 166,986 in Geekbench OpenCL, and 169,754 in Geekbench Vulkan. PassMark results show 27,711 in G3D, 12,134 in GPU Compute, 1,095 in G2D, and legacy DirectX scores of 314 (DX9), 253 (DX11), 171 (DX10), and 116 (DX12). The N1X 48SM has an average benchmark score of 0 and a 50th percentile ranking among all GPUs, compared to the RTX 5080 Mobile's 81st percentile.

Because the N1X 48SM lacks any recorded benchmarks, the head-to-head comparison relies on architectural and specification data rather than measured performance. The RTX 5080 Mobile sits at the 81st percentile across all GPUs, placing it above most recorded hardware. Its nearest rivals in the database include the NVIDIA GeForce MX570 with an average score of 38,299 (0.1% delta), the NVIDIA GeForce RTX 4080 Mobile at 38,135 (0.6% delta), the NVIDIA GeForce MX570 A at 38,691 (-0.9% delta), and the AMD Radeon Pro 580X at 38,706 (-0.9% delta). These margins are narrow, indicating the RTX 5080 Mobile clusters tightly with these peers in aggregate performance.

The N1X 48SM has no nearest rivals listed and no benchmark data, so its measured performance cannot be contextualized against any other GPU. The 50th percentile figure is the only ranking data available, and with an average score of zero, it reflects an absence of recorded results rather than a performance floor.

Where Each One Wins

The RTX 5080 Mobile wins in every measured benchmark category because it is the only one of the two with recorded test results. Its 23.04 TFLOPS FP32 throughput and 23.04 TFLOPS FP16 (1:1) provide the computational foundation for its scores. The 896.0 GB/s memory bandwidth from 16 GB of GDDR7 on a 256-bit bus supports the 4,952 Steel Nomad DX12 result and the 166,986 OpenCL and 169,754 Vulkan Geekbench figures.

The N1X 48SM has no wins in any benchmark category due to missing data. However, its specifications show strengths in specific areas. It delivers 28.83 TFLOPS FP32 and 28.83 TFLOPS FP16 (1:1), which is higher than the RTX 5080 Mobile's 23.04 TFLOPS in both. Its texture rate is 900.9 GTexel/s versus 360.0 GTexel/s for the RTX 5080 Mobile, and it has 384 TMUs compared to 240. These figures suggest the N1X 48SM would lead in texture-bound workloads if benchmarks existed.

The RTX 5080 Mobile counters with a pixel rate of 144.0 GPixel/s versus 112.6 GPixel/s for the N1X 48SM, and 96 ROPs versus 48. The RTX 5080 Mobile also has more shading units (7,680 vs 6,144), more RT cores (60 vs 48), and more tensor cores (240 vs 192). Memory capacity strongly favors the N1X 48SM at 128 GB of LPDDR5X, but its bandwidth is 273.2 GB/s, far below the RTX 5080 Mobile's 896.0 GB/s.

Architecture Differences

Both GPUs use the Blackwell 2.0 architecture and are manufactured by TSMC on a 5 nm process. The RTX 5080 Mobile uses the GB203 chip, while the N1X 48SM uses the GB20B chip. The RTX 5080 Mobile belongs to the GeForce 50-series and the GeForce 50 Mobile generation, while the N1X 48SM is part of the Blackwell IGP (N1x) generation.

The RTX 5080 Mobile has 45,600 million transistors on a 378 mm² die, giving a transistor density of 120.6 million per mm². The N1X 48SM has an unknown transistor count on a 382 mm² die, with no density figure recorded. The die sizes are close, differing by only 4 mm², but the transistor counts cannot be compared directly.

The RTX 5080 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1X 48SM reports N/A for DirectX, OpenGL, and Vulkan, indicating it does not expose standard graphics APIs in the recorded data. This is a fundamental architectural distinction: the RTX 5080 Mobile is a full-featured consumer graphics processor, while the N1X 48SM appears oriented toward compute or specialized workloads without traditional rasterization API support.

The RTX 5080 Mobile has a boost clock of 1500 MHz and a base clock of 975 MHz. The N1X 48SM has a lower base clock of 741 MHz but a much higher boost clock of 2346 MHz. The N1X 48SM's boost clock exceeds the RTX 5080 Mobile's by 846 MHz, which partially explains its higher FP32 throughput despite fewer shading units.

Specification Differences

| Specification | RTX 5080 Mobile | N1X 48SM |

|---|---|---|

| Chip | GB203 | GB20B |

| Transistors | 45,600 million | unknown |

| Die size | 378 mm² | 382 mm² |

| Base clock | 975 MHz | 741 MHz |

| Boost clock | 1500 MHz | 2346 MHz |

| Memory clock | 1750 MHz (28 Gbps effective) | 1067 MHz (8.5 Gbps effective) |

| Memory size | 16 GB GDDR7 | 128 GB LPDDR5X |

| Memory bandwidth | 896.0 GB/s | 273.2 GB/s |

| Shading units | 7680 | 6144 |

| TMUs | 240 | 384 |

| ROPs | 96 | 48 |

| RT cores | 60 | 48 |

| Tensor cores | 240 | 192 |

| Pixel rate | 144.0 GPixel/s | 112.6 GPixel/s |

| Texture rate | 360.0 GTexel/s | 900.9 GTexel/s |

| FP32 | 23.04 TFLOPS | 28.83 TFLOPS |

| FP16 | 23.04 TFLOPS (1:1) | 28.83 TFLOPS (1:1) |

| TDP | 80 W | unknown |

| Display outputs | Portable Device Dependent | 1x HDMI |

| DirectX | 12 Ultimate (12_2) | N/A |

| OpenGL | 4.6 | N/A |

| Vulkan | 1.4 | N/A |

| Release date | 2025-04-01 | 2026-05-31 |

The RTX 5080 Mobile uses GDDR7 memory and the N1X 48SM uses LPDDR5X. Memory bus width is identical at 256 bit for both. Both use PCIe 5.0 x16 as the bus interface, and both are IGP slot width with no power connectors. The RTX 5080 Mobile has a TDP of 80 W; the N1X 48SM's TDP is unknown.

The RTX 5080 Mobile has 16 GB of memory, while the N1X 48SM has 128 GB, an 8x capacity difference. However, the RTX 5080 Mobile's bandwidth is 3.28x higher. The N1X 48SM has 1.6x more TMUs and a 2.5x higher texture rate, but the RTX 5080 Mobile has 1.25x more shading units and 2x more ROPs.

FAQ

Q: Which GPU has higher FP32 compute?

A: The N1X 48SM delivers 28.83 TFLOPS FP32, which is 5.79 TFLOPS higher than the RTX 5080 Mobile's 23.04 TFLOPS.

Q: How do their memory systems compare?

A: The RTX 5080 Mobile uses 16 GB of GDDR7 with 896.0 GB/s bandwidth, while the N1X 48SM uses 128 GB of LPDDR5X with 273.2 GB/s bandwidth. The RTX 5080 Mobile has 3.28x the bandwidth despite having 8x less capacity.

Q: Why does the N1X 48SM have no benchmark scores?

A: The database records no benchmark entries for the N1X 48SM, giving it an average score of 0 and a 50th percentile ranking. The RTX 5080 Mobile has ten recorded benchmark scores and an 81st percentile ranking.

Q: What API support does each GPU offer?

A: The RTX 5080 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1X 48SM reports N/A for DirectX, OpenGL, and Vulkan in the database.

Q: Which GPU has higher texture throughput?

A: The N1X 48SM has a texture rate of 900.9 GTexel/s with 384 TMUs, compared to the RTX 5080 Mobile's 360.0 GTexel/s with 240 TMUs. The N1X 48SM is 2.5x faster in this metric.

Q: What is the release timeline difference?

A: The RTX 5080 Mobile has a release date of 2025-04-01. The N1X 48SM has a release date of 2026-05-31, over a year later.

The Verdict

The RTX 5080 Mobile is the only GPU of the two with measured performance data. Its 81st percentile ranking and average benchmark score of 38,349 place it in the upper range of all recorded GPUs. The nearest rivals show the RTX 5080 Mobile sits within 0.9% of the NVIDIA GeForce MX570, RTX 4080 Mobile, MX570 A, and AMD Radeon Pro 580X in aggregate score, meaning its performance is comparable to those established parts.

The N1X 48SM cannot be evaluated on measured performance because the database contains no benchmark results for it. Its specifications indicate a different design philosophy: higher FP32 at 28.83 TFLOPS, a much higher boost clock at 2346 MHz, 128 GB of memory, and exceptional texture throughput at 900.9 GTexel/s. These features suggest compute-heavy or large-dataset workloads rather than traditional gaming or graphics rendering, especially given the lack of DirectX, OpenGL, and Vulkan support.

For a builder selecting a GPU for standard graphics workloads, the RTX 5080 Mobile is the data-backed choice. It has proven scores, full API support, and a 81st percentile standing. The N1X 48SM offers higher raw compute and texture rates, but without benchmarks or API support, it cannot be recommended for conventional graphics use. The choice depends on workload: the RTX 5080 Mobile for measured graphics performance, the N1X 48SM for its specification advantages in texture-heavy or FP32-intensive tasks, provided the lack of standard API support is acceptable.