NVIDIA GeForce RTX 5070 Mobile vs NVIDIA N1 20SM Comparison

Head-to-Head Benchmarks

The recorded data for the NVIDIA GeForce RTX 5070 Mobile is extensive, with multiple benchmark scores across DirectX, OpenCL, Vulkan, and compute workloads. The NVIDIA N1 20SM, however, has no recorded benchmark scores in the database, and the head-to-head benchmark table is empty. This means a direct numerical comparison of performance cannot be made from the available measurements.

The RTX 5070 Mobile’s average benchmark score is 29,928 points, placing it in the 75th percentile among all GPUs in the database. Its nearest rivals show a tight cluster of results: the NVIDIA GeForce RTX 3070 Ti scores 29,945 (0.1% higher), the AMD Radeon RX 6800 scores 30,095 (0.6% higher), the AMD Radeon RX 6700 scores 30,433 (1.7% higher), and the NVIDIA GeForce RTX 2080 Ti scores 29,783 (0.5% lower). The RTX 5070 Mobile sits within 1.7% of all four rivals, indicating that its measured performance is consistent with that class of desktop GPUs.

The N1 20SM’s average benchmark score is 0, and its percentile is 50, but with no benchmark entries, the database provides no evidence of actual measured performance. The wins counters for both GPUs are 0, confirming that no head-to-head benchmark results exist. Therefore, the analysis must rely on architectural specifications and the RTX 5070 Mobile’s own benchmark scores, not on direct comparisons between the two.

Architecture Differences

Both GPUs use the Blackwell 2.0 architecture and are manufactured on a 5 nm process at TSMC. The RTX 5070 Mobile uses the GB206 chip, while the N1 20SM uses the GB20B chip. The die sizes differ substantially: the RTX 5070 Mobile measures 181 mm² with 21,900 million transistors, giving a transistor density of 121.0M per mm². The N1 20SM has a larger die at 382 mm², but its transistor count is listed as unknown, and its density is not recorded.

The memory subsystems are fundamentally different. The RTX 5070 Mobile uses 8 GB of GDDR7 on a 128-bit bus, delivering 384.0 GB/s of bandwidth. The N1 20SM uses 128 GB of LPDDR5X on a 256-bit bus, delivering 273.2 GB/s. The N1 20SM has 16 times the memory capacity but 28.9% less bandwidth (273.2 vs 384.0 GB/s). Memory clock speeds also differ: the RTX 5070 Mobile runs at 1500 MHz (24 Gbps effective), while the N1 20SM runs at 1067 MHz (8.5 Gbps effective).

The compute configuration shows a clear split. The RTX 5070 Mobile has 4,608 shading units, 144 TMUs, 48 ROPs, 36 RT cores, and 144 tensor cores. The N1 20SM has 2,560 shading units (44.4% fewer), 160 TMUs (11.1% more), 24 ROPs (50% fewer), 20 RT cores (44.4% fewer), and 80 tensor cores (44.4% fewer). The N1 20SM’s higher TMU count contributes to its texture rate of 375.4 GTexel/s, which is 82.9% higher than the RTX 5070 Mobile’s 205.2 GTexel/s. The RTX 5070 Mobile’s pixel rate is 68.40 GPixel/s versus 56.30 GPixel/s for the N1 20SM, a 21.5% advantage.

Clock behavior also diverges. The RTX 5070 Mobile has a base clock of 907 MHz and a boost of 1425 MHz. The N1 20SM has a lower base clock of 741 MHz but a much higher boost of 2346 MHz. The N1 20SM’s boost clock is 64.6% higher than the RTX 5070 Mobile’s.

FP32 throughput is close: the RTX 5070 Mobile delivers 13.13 TFLOPS, and the N1 20SM delivers 12.01 TFLOPS, a 9.3% difference. Both support FP16 at a 1:1 ratio with the same TFLOPS values.

The API support is a major differentiator. The RTX 5070 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1 20SM lists DirectX, OpenGL, and Vulkan as N/A. The RTX 5070 Mobile’s display outputs are marked as portable device dependent, while the N1 20SM has a single HDMI output.

Power characteristics differ as well. The RTX 5070 Mobile has a TDP of 50 W. The N1 20SM’s TDP is unknown. Both are IGP slot width and have no power connectors. Both use a PCIe 5.0 x16 bus interface.

The N1 20SM’s release date is later (2026-05-31) compared to the RTX 5070 Mobile (2025-04-14). The RTX 5070 Mobile has a predecessor (GeForce 40 Mobile), while the N1 20SM has none listed.

Where Each One Wins

Without benchmark scores for the N1 20SM, the database cannot confirm any performance wins for that GPU. The RTX 5070 Mobile, however, has measurable strengths in several areas.

The RTX 5070 Mobile’s highest recorded score is in Geekbench OpenCL at 122,238, followed by Geekbench Vulkan at 116,960. In Passmark tests, the scores are: DirectX 9 at 214, DirectX 11 at 192, DirectX 10 at 129, DirectX 12 at 93, G2D at 896, G3D at 20,355, and GPU compute at 8,279. The G3D score of 20,355 is the most substantial workload result, and the GPU compute score of 8,279 indicates a meaningful compute capability.

The RTX 5070 Mobile’s bandwidth advantage (384.0 vs 273.2 GB/s) is a clear architectural win for memory-intensive tasks. Its pixel rate advantage (68.40 vs 56.30 GPixel/s) suggests stronger rasterization throughput. Its FP32 output is also higher (13.13 vs 12.01 TFLOPS).

The N1 20SM’s advantages are structural rather than measured. Its 128 GB memory capacity is 16 times larger, which could matter for very large datasets, but the lower bandwidth (273.2 GB/s) would constrain sustained throughput. Its texture rate of 375.4 GTexel/s is much higher, indicating stronger texel-processing capability. Its boost clock of 2346 MHz is substantially higher, potentially improving single-threaded or lightly-threaded workloads.

The RTX 5070 Mobile’s API support (DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4) is a functional advantage for gaming and general-purpose graphics workloads. The N1 20SM has no API support listed, which limits its applicability to the recorded benchmarks.

The Verdict

The data supports a clear distinction. The RTX 5070 Mobile has extensive benchmark results, a 75th percentile ranking, and an average score of 29,928. The N1 20SM has no benchmark scores, an average score of 0, and a 50th percentile ranking that is not backed by any measurements.

For users seeking a GPU with proven performance, the RTX 5070 Mobile is the only option with recorded evidence. Its benchmark scores place it within 1.7% of desktop GPUs like the RTX 3070 Ti, RX 6800, and RX 6700, and slightly ahead of the RTX 2080 Ti. The 50 W TDP and IGP form factor make it suitable for portable devices, and the GDDR7 memory with 384.0 GB/s bandwidth provides a strong memory subsystem.

The N1 20SM, with its 128 GB LPDDR5X memory and 382 mm² die, appears designed for a different role, likely integrated into a larger system. Its lack of API support and absence of benchmark scores mean the database cannot verify any graphics or compute performance. The 256-bit memory bus and higher texture rate suggest a focus on bandwidth-hungry or texture-heavy tasks, but no evidence exists to confirm real-world results.

The RTX 5070 Mobile’s 13.13 TFLOPS FP32 output is 9.3% higher than the N1 20SM’s 12.01 TFLOPS. The RTX 5070 Mobile also has more shading units (4,608 vs 2,560), more ROPs (48 vs 24), more RT cores (36 vs 20), and more tensor cores (144 vs 80). The N1 20SM’s only compute-side advantages are TMU count (160 vs 144) and texture rate (375.4 vs 205.2 GTexel/s).

For gaming, DirectX, Vulkan, or OpenGL workloads, the RTX 5070 Mobile is the only viable choice based on the data. For tasks that require massive memory capacity (128 GB) and sustained texture throughput, the N1 20SM has theoretical advantages, but the absence of benchmarks means those advantages are unverified. The database’s verdict is straightforward: the RTX 5070 Mobile is the measured performer, while the N1 20SM remains uncharacterized.

FAQ

Q: Does the NVIDIA N1 20SM have any benchmark scores in the database?

A: No. The N1 20SM has an empty benchmark list, an average benchmark score of 0, and no nearest rivals recorded.

Q: How does the RTX 5070 Mobile compare to its nearest rivals?

A: The RTX 5070 Mobile’s average score of 29,928 is 0.1% below the RTX 3070 Ti (29,945), 0.6% below the RX 6800 (30,095), 1.7% below the RX 6700 (30,433), and 0.5% above the RTX 2080 Ti (29,783).

Q: What is the memory capacity difference between the two GPUs?

A: The RTX 5070 Mobile has 8 GB of GDDR7, while the N1 20SM has 128 GB of LPDDR5X, a 16x difference in capacity.

Q: Which GPU has higher memory bandwidth?

A: The RTX 5070 Mobile delivers 384.0 GB/s, which is 28.9% higher than the N1 20SM’s 273.2 GB/s.

Q: What are the FP32 TFLOPS for each GPU?

A: The RTX 5070 Mobile delivers 13.13 TFLOPS, and the N1 20SM delivers 12.01 TFLOPS, a 9.3% difference in favor of the RTX 5070 Mobile.

Q: Does the N1 20SM support DirectX, OpenGL, or Vulkan?

A: The database lists DirectX, OpenGL, and Vulkan as N/A for the N1 20SM, while the RTX 5070 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Specification Differences

| Specification | NVIDIA GeForce RTX 5070 Mobile | NVIDIA N1 20SM |

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

| Chip | GB206 | GB20B |

| Generation | GeForce 50 Mobile | Blackwell IGP (N1x) |

| Die Size | 181 mm² | 382 mm² |

| Transistors | 21,900 million | unknown |

| Transistor Density | 121.0M / mm² | null |

| Base Clock | 907 MHz | 741 MHz |

| Boost Clock | 1425 MHz | 2346 MHz |

| Memory Clock | 1500 MHz (24 Gbps effective) | 1067 MHz (8.5 Gbps effective) |

| Memory Size | 8 GB | 128 GB |

| Memory Type | GDDR7 | LPDDR5X |

| Memory Bus Width | 128 bit | 256 bit |

| Memory Bandwidth | 384.0 GB/s | 273.2 GB/s |

| Shading Units | 4608 | 2560 |

| TMUs | 144 | 160 |

| ROPs | 48 | 24 |

| RT Cores | 36 | 20 |

| Tensor Cores | 144 | 80 |

| Pixel Rate | 68.40 GPixel/s | 56.30 GPixel/s |

| Texture Rate | 205.2 GTexel/s | 375.4 GTexel/s |

| FP32 | 13.13 TFLOPS | 12.01 TFLOPS |

| FP16 | 13.13 TFLOPS (1:1) | 12.01 TFLOPS (1:1) |

| TDP | 50 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 | 2025-04-14 | 2026-05-31 |

| Predecessor | GeForce 40 Mobile | null |