NVIDIA GeForce RTX 4070 Mobile vs NVIDIA N1X 40SM Comparison

Head-to-Head Benchmarks

The database contains a full benchmark suite for the NVIDIA GeForce RTX 4070 Mobile, but the NVIDIA N1X 40SM has no recorded benchmark scores. This makes a direct numerical comparison impossible. The RTX 4070 Mobile produces an average benchmark score of 27,435 across all tests, placing it in the 73rd percentile of all GPUs in the database. Its nearest rivals include the AMD Radeon RX 6700 XT with an average score of 27,425 (a 0% delta), the NVIDIA GeForce RTX 3090 at 27,565 (0.5% higher), the NVIDIA RTX PRO 4000 Blackwell at 27,135 (1.1% lower), and the AMD Radeon Pro Vega 20 at 27,839 (1.5% higher). These deltas show the RTX 4070 Mobile sits in a tightly packed performance band, essentially matching a desktop-class RX 6700 XT and trailing the RTX 3090 by half a percent.

Looking at individual workload results for the RTX 4070 Mobile, the Geekbench OpenCL score reaches 109,197, while the Vulkan score is 108,367, a difference of 0.8% favoring OpenCL. PassMark results show a G3D score of 19,587, a GPU compute score of 8,399, and legacy DirectX tests at 223 (DirectX 9), 179 (DirectX 11), 116 (DirectX 10), and 85 (DirectX 12). The G2D score is 763. The N1X 40SM, by contrast, has zero entries in the benchmark table, an average score of 0, and sits in the 50th percentile by default. The head-to-head benchmark list is empty, and neither item registers a win count. Any performance comparison must therefore rely on architectural and specification analysis rather than measured scores.

FAQ

Q: Does the NVIDIA N1X 40SM have any benchmark scores in the database?

A: No. The N1X 40SM has an empty benchmark list, an average benchmark score of 0, and no nearest rivals recorded. Its percentile rank of 50 is a placeholder, not a measured result.

Q: How does the RTX 4070 Mobile compare to its closest rivals?

A: The RTX 4070 Mobile averages 27,435, which is 0% different from the AMD Radeon RX 6700 XT (27,425), 0.5% behind the NVIDIA GeForce RTX 3090 (27,565), 1.1% ahead of the NVIDIA RTX PRO 4000 Blackwell (27,135), and 1.5% behind the AMD Radeon Pro Vega 20 (27,839).

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

A: The RTX 4070 Mobile uses 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth. The N1X 40SM uses 128 GB of LPDDR5X on a 256-bit bus with 273.2 GB/s bandwidth. The N1X has 16 times the capacity and 6.7% more bandwidth.

Q: Which GPU has higher raw compute throughput?

A: The N1X 40SM delivers 24.02 TFLOPS FP32 and FP16 (1:1), while the RTX 4070 Mobile delivers 15.62 TFLOPS FP32 and FP16 (1:1). The N1X is 53.8% higher in both metrics.

Q: What are the clock speed profiles?

A: The RTX 4070 Mobile has a base clock of 1395 MHz and a boost clock of 1695 MHz. The N1X 40SM has a much lower base clock of 741 MHz but a higher boost clock of 2346 MHz. Memory clocks are 2000 MHz (16 Gbps effective) for the RTX 4070 Mobile and 1067 MHz (8.5 Gbps effective) for the N1X.

Q: Which GPU supports PCIe 5.0?

A: The N1X 40SM uses a PCIe 5.0 x16 interface. The RTX 4070 Mobile uses PCIe 4.0 x8. The N1X also lists a display output of 1x HDMI, while the RTX 4070 Mobile is marked as portable device dependent.

Where Each One Wins

The RTX 4070 Mobile wins in every measured benchmark category simply because it has measured data. Its Geekbench OpenCL score of 109,197 and Vulkan score of 108,367 demonstrate strong compute performance across both API paths. PassMark G3D at 19,587 and GPU compute at 8,399 show a balanced profile for both graphics and general-purpose workloads. The DirectX 9 score of 223 and DirectX 11 score of 179 indicate solid legacy API performance, while DirectX 12 at 85 and DirectX 10 at 116 are lower but still functional. The G2D score of 763 suggests capable 2D acceleration. This GPU is positioned at the 73rd percentile of all GPUs, meaning it outperforms the majority of the database population.

The N1X 40SM wins in specification-driven categories. It has 5120 shading units versus 4608 for the RTX 4070 Mobile, a 11.1% advantage. Texture mapping units number 320 versus 144, a 122.2% increase. Ray tracing cores reach 40 versus 36, an 11.1% advantage. Tensor cores hit 160 versus 144, an 11.1% increase. The N1X also has higher pixel rate at 93.84 GPixel/s versus 81.36 GPixel/s, a 15.3% edge, and a texture rate of 750.7 GTexel/s versus 244.1 GTexel/s, a 207.5% advantage. Memory capacity at 128 GB versus 8 GB allows workloads that would exceed the RTX 4070 Mobile's frame buffer entirely. The N1X further delivers 24.02 TFLOPS FP32 versus 15.62 TFLOPS, a 53.8% lead. These are theoretical maxima, however, with no measured scores to confirm real-world scaling.

Specification Differences

Memory capacity differs dramatically: 8 GB GDDR6 on the RTX 4070 Mobile versus 128 GB LPDDR5X on the N1X 40SM. Bus width is 128-bit versus 256-bit, and bandwidth is 256.0 GB/s versus 273.2 GB/s. The RTX 4070 Mobile has 48 ROPs; the N1X has 40 ROPs, a 16.7% reduction. Shading units are 4608 versus 5120. TMUs are 144 versus 320. RT cores are 36 versus 40. Tensor cores are 144 versus 160. Base clocks are 1395 MHz versus 741 MHz, while boost clocks are 1695 MHz versus 2346 MHz. Memory clocks are 2000 MHz (16 Gbps effective) versus 1067 MHz (8.5 Gbps effective). Both use a 5 nm process at TSMC, but die size is 188 mm² for the RTX 4070 Mobile versus 382 mm² for the N1X. Transistor count is 22,900 million for the RTX 4070 Mobile; the N1X lists an unknown transistor count. Transistor density for the RTX 4070 Mobile is 121.8M per mm²; the N1X has no density figure. TDP is 115 W for the RTX 4070 Mobile and unknown for the N1X. Both are IGP slot width with no power connectors. Bus interface differs: PCIe 4.0 x8 versus PCIe 5.0 x16. Display outputs are portable device dependent versus 1x HDMI. The RTX 4070 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4; the N1X lists N/A for all three APIs.

Architecture Differences

The RTX 4070 Mobile uses the AD106 chip built on the Ada Lovelace architecture, part of the GeForce 40 Mobile generation. The N1X 40SM uses the GB20B chip on the Blackwell 2.0 architecture, part of the Blackwell IGP (N1x) generation. Both are fabricated by TSMC at 5 nm. The RTX 4070 Mobile has a transistor count of 22,900 million on a 188 mm² die, yielding a density of 121.8M per mm². The N1X has an unknown transistor count on a 382 mm² die, which is more than double the area. The RTX 4070 Mobile's predecessor is the GeForce 30 Mobile and its successor is the GeForce 50 Mobile. The N1X has no predecessor or successor listed. The RTX 4070 Mobile released on 2023-01-02, while the N1X released on 2026-05-31. The RTX 4070 Mobile's FP16 ratio is 1:1 relative to FP32, and the N1X matches that ratio at 1:1. The RTX 4070 Mobile has no codename; the N1X also has no codename. The N1X's API support is listed as N/A, which is unusual for a GPU, whereas the RTX 4070 Mobile has full DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support. Both use the same foundry and node, but the architectural families are entirely different: Ada Lovelace targets mobile discrete graphics with a focus on efficiency, while Blackwell 2.0 in this IGP configuration emphasizes much larger memory capacity and higher theoretical compute, albeit with unknown power draw.

The Verdict

The recorded data shows the RTX 4070 Mobile as a measured, competitive mobile GPU. Its 73rd percentile rank and average score of 27,435 place it alongside desktop-class rivals like the RX 6700 XT and RTX 3090, with deltas within 1.5% across all nearest neighbors. It supports current APIs (DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4), has a defined 115 W TDP, and fits the IGP form factor with no external power connectors. For any workload requiring measured performance, driver support, or API compatibility, the RTX 4070 Mobile is the only option with evidence in the database.

The N1X 40SM offers no benchmark scores, no API support, and no measured average. Its 50th percentile is unearned. However, its specification sheet is remarkable: 128 GB of LPDDR5X memory, 5120 shading units, 320 TMUs, 40 RT cores, 160 tensor cores, 24.02 TFLOPS FP32, and a 256-bit bus with 273.2 GB/s bandwidth. These figures suggest a GPU designed for large-memory compute tasks or integrated system use, not gaming. The 382 mm² die and PCIe 5.0 x16 interface point to a high-bandwidth, high-throughput part. But without any recorded benchmark results, these are theoretical capabilities only.

Users should select the RTX 4070 Mobile if they need a proven, measured GPU with known DirectX, OpenGL, and Vulkan support, and if their workload fits within 8 GB of memory. Users should select the N1X 40SM only if they require enormous memory capacity (128 GB) and are willing to accept an unknown power draw, no API listings, and zero performance validation. The data does not support any claim of real-world superiority for the N1X, only a specification advantage on paper. The RTX 4070 Mobile is the safer choice; the N1X is a speculative one.