NVIDIA GeForce RTX 5070 Mobile vs NVIDIA N1X 48SM Comparison

NVIDIA GeForce RTX 5070 Mobile and NVIDIA N1X 48SM are both built on the Blackwell 2.0 architecture and produced by TSMC on a 5 nm process, yet they target fundamentally different segments of the mobile computing market. The RTX 5070 Mobile is a discrete GeForce 50-series part with a full suite of benchmark results, while the N1X 48SM is an integrated graphics processor (IGP) with no recorded benchmark scores in the database. The data available for the RTX 5070 Mobile allows for direct comparisons against established desktop GPUs, whereas the N1X 48SM must be analyzed primarily through its architectural specifications and theoretical capabilities.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the RTX 5070 Mobile and the N1X 48SM. The N1X 48SM has an empty benchmarks array, an average benchmark score of 0, and no nearest rivals listed. Consequently, no measured performance delta can be established between these two parts from recorded data. The RTX 5070 Mobile, however, has nine recorded benchmark scores, and its average benchmark score of 29,928 positions it at the 75th percentile of all GPUs in the database.

The RTX 5070 Mobile's nearest rivals, based on average score, are all desktop-class GPUs from previous generations. Its average score of 29,928 is 0.1% below the NVIDIA GeForce RTX 3070 Ti (average score 29,945), meaning the two are effectively tied in overall performance. Against the NVIDIA GeForce RTX 2080 Ti (average score 29,783), the RTX 5070 Mobile is 0.5% ahead, again a negligible margin. The AMD Radeon RX 6800 (average score 30,095) sits 0.6% ahead of the RTX 5070 Mobile, while the AMD Radeon RX 6700 (average score 30,433) leads by 1.7%. These deltas, all within 2%, indicate that the RTX 5070 Mobile delivers performance comparable to these older high-end desktop cards, despite being a mobile part with a power envelope of 50 W.

Individual benchmark scores for the RTX 5070 Mobile show its strongest results in compute-oriented tests. Its Geekbench OpenCL score is 122,238, and its Geekbench Vulkan score is 116,960. These are the highest recorded scores among its benchmarks, indicating strong general-purpose and graphics compute capabilities. In Passmark tests, the GPU compute score is 8,279, while the 3D graphics score (Passmark G3D) is 20,355. Legacy DirectX tests show more variability: Passmark DirectX 9 scores 214, DirectX 10 scores 129, DirectX 11 scores 192, and DirectX 12 scores 93. The 2D graphics score (Passmark G2D) is 896. These figures suggest that the RTX 5070 Mobile is optimized for modern workloads, with its DirectX 12 score being notably lower than its DirectX 9 and 11 scores, which is typical for a GPU that relies heavily on newer rendering paths.

Since the N1X 48SM has no recorded benchmarks, its performance cannot be quantified relative to the RTX 5070 Mobile or any other GPU. The database lists its percentile as 50, but with an average score of 0 and no rivals, this percentile carries no comparative weight. Any assertion about which part wins in raw performance would require extrapolation from specifications, which is outside the scope of measured data.

Architecture Differences

Both GPUs share the Blackwell 2.0 architecture and the TSMC 5 nm process node, but their physical implementations diverge significantly. The RTX 5070 Mobile uses the GB206 chip with a die size of 181 mm² and 21,900 million transistors, yielding a transistor density of 121.0 million per mm². The N1X 48SM uses the GB20B chip with a substantially larger die size of 382 mm²; its transistor count is listed as unknown, so no density figure can be derived.

The N1X 48SM's larger die corresponds to a higher resource count across most execution units. It has 6,144 shading units, 384 texture mapping units (TMUs), 48 render output units (ROPs), 48 ray tracing cores, and 192 tensor cores. The RTX 5070 Mobile has 4,608 shading units, 144 TMUs, 48 ROPs, 36 ray tracing cores, and 144 tensor cores. Thus, the N1X 48SM provides 33% more shading units, 166% more TMUs, 33% more ray tracing cores, and 33% more tensor cores, while matching the ROP count at 48.

Clock speeds tell a different story. The RTX 5070 Mobile has a base clock of 907 MHz and a boost clock of 1,425 MHz. The N1X 48SM has a lower base clock of 741 MHz but a much higher boost clock of 2,346 MHz. This higher boost clock, combined with the greater execution unit count, produces markedly higher theoretical throughput figures for the N1X 48SM. Its pixel rate is 112.6 GPixel/s versus 68.40 GPixel/s for the RTX 5070 Mobile, a 65% advantage. Its texture rate is 900.9 GTexel/s versus 205.2 GTexel/s, a 4.4x advantage. Its FP32 compute is 28.83 TFLOPS versus 13.13 TFLOPS, and its FP16 is similarly 28.83 TFLOPS versus 13.13 TFLOPS, both representing a 2.2x advantage for the N1X 48SM.

Memory architecture also differs substantially. The RTX 5070 Mobile uses 8 GB of GDDR7 memory on a 128-bit bus, with a memory clock of 1,500 MHz (24 Gbps effective) and a bandwidth of 384.0 GB/s. The N1X 48SM uses 128 GB of LPDDR5X memory on a 256-bit bus, with a memory clock of 1,067 MHz (8.5 Gbps effective) and a bandwidth of 273.2 GB/s. While the N1X 48SM has 16 times the memory capacity and double the bus width, its bandwidth is 29% lower due to the slower memory type and lower effective clock speed.

Feature support shows a critical divergence. The RTX 5070 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1X 48SM lists DirectX as N/A, OpenGL as N/A, and Vulkan as N/A, indicating that its API support is either undefined in the database or not applicable for its intended role. Both parts use a PCIe 5.0 x16 bus interface and are classified as IGP (integrated graphics processor) in terms of slot width. The RTX 5070 Mobile has no power connectors and a 50 W TDP, while the N1X 48SM's TDP is listed as unknown, though it also uses no power connectors.

Release timing also differs. The RTX 5070 Mobile has a release date of 2025-04-14, while the N1X 48SM has a release date of 2026-05-31. Both are listed as Active in production status. The RTX 5070 Mobile has a predecessor in the GeForce 40 Mobile series, while the N1X 48SM has no predecessor listed.

FAQ

Q: Which GPU has higher raw compute performance according to the database?

A: The N1X 48SM shows higher theoretical FP32 and FP16 throughput at 28.83 TFLOPS each, compared to 13.13 TFLOPS each for the RTX 5070 Mobile. However, the N1X 48SM has no recorded benchmark scores, so measured performance cannot be confirmed.

Q: How does the RTX 5070 Mobile compare to its nearest rivals in average benchmark score?

A: The RTX 5070 Mobile's average benchmark score is 29,928. It trails the AMD Radeon RX 6800 (score 30,095) by 0.6% and the AMD Radeon RX 6700 (score 30,433) by 1.7%. It is 0.1% behind the NVIDIA GeForce RTX 3070 Ti (score 29,945) and 0.5% ahead of the NVIDIA GeForce RTX 2080 Ti (score 29,783).

Q: What are the memory capacity and type differences between the two GPUs?

A: The RTX 5070 Mobile has 8 GB of GDDR7 memory on a 128-bit bus with 384.0 GB/s bandwidth. The N1X 48SM has 128 GB of LPDDR5X memory on a 256-bit bus with 273.2 GB/s bandwidth.

Q: Do both GPUs support the same graphics APIs?

A: No. The RTX 5070 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1X 48SM lists DirectX, OpenGL, and Vulkan all as N/A in the database.

Q: Which GPU has more ray tracing and tensor cores?

A: The N1X 48SM has 48 ray tracing cores and 192 tensor cores. The RTX 5070 Mobile has 36 ray tracing cores and 144 tensor cores.

Q: What is the release date difference between the two parts?

A: The RTX 5070 Mobile has a release date of 2025-04-14. The N1X 48SM has a release date of 2026-05-31.

Specification Differences

The following fields differ between the RTX 5070 Mobile and the N1X 48SM based on recorded data:

• Chip: GB206 vs GB20B
• Generation: GeForce 50 Mobile vs Blackwell IGP (N1x)
• Die Size: 181 mm² vs 382 mm²
• Transistors: 21,900 million vs unknown
• Transistor Density: 121.0M / mm² vs null
• Base Clock: 907 MHz vs 741 MHz
• Boost Clock: 1,425 MHz vs 2,346 MHz
• Memory Clock: 1,500 MHz (24 Gbps effective) vs 1,067 MHz (8.5 Gbps effective)
• Memory Size: 8 GB vs 128 GB
• Memory Type: GDDR7 vs LPDDR5X
• Memory Bus Width: 128 bit vs 256 bit
• Memory Bandwidth: 384.0 GB/s vs 273.2 GB/s
• Shading Units: 4,608 vs 6,144
• TMUs: 144 vs 384
• RT Cores: 36 vs 48
• Tensor Cores: 144 vs 192
• Pixel Rate: 68.40 GPixel/s vs 112.6 GPixel/s
• Texture Rate: 205.2 GTexel/s vs 900.9 GTexel/s
• FP32: 13.13 TFLOPS vs 28.83 TFLOPS
• FP16: 13.13 TFLOPS vs 28.83 TFLOPS
• TDP: 50 W vs unknown
• Display Outputs: Portable Device Dependent vs 1x HDMI
• DirectX Support: 12 Ultimate (12_2) vs N/A
• OpenGL Support: 4.6 vs N/A
• Vulkan Support: 1.4 vs N/A
• Release Date: 2025-04-14 vs 2026-05-31
• Predecessor: GeForce 40 Mobile vs null
• Benchmark Scores: Nine recorded tests with avg 29,928 vs none, avg 0
• Percentile: 75 vs 50
• Nearest Rivals: Four listed vs none

Fields that are identical include manufacturer (NVIDIA), architecture (Blackwell 2.0), process node (5 nm), foundry (TSMC), ROPs (48), slot width (IGP), power connectors (None), bus interface (PCIe 5.0 x16), and production status (Active).

The Verdict

The data presents two GPUs with no direct performance comparison available. The RTX 5070 Mobile is a fully benchmarked discrete mobile GPU, delivering an average score of 29,928 and landing within 2% of several older desktop-class GPUs. Its 13.13 TFLOPS FP32, 8 GB GDDR7 with 384.0 GB/s bandwidth, and full API support (DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4) make it a complete solution for conventional graphics workloads. The 50 W TDP and IGP slot width indicate a power-efficient design suitable for thin laptops.

The N1X 48SM, by contrast, has no measured benchmark results and no API support listed. Its specifications suggest a different purpose: 128 GB of LPDDR5X memory, 6,144 shading units, 28.83 TFLOPS FP32, and a 2,346 MHz boost clock point to a part designed for large memory capacity and high compute throughput rather than traditional gaming or graphics rendering. The 382 mm² die size and 256-bit memory bus reinforce this profile. Its 273.2 GB/s bandwidth, while lower than the RTX 5070 Mobile's, is paired with 16 times the memory capacity, which could benefit data-intensive workloads.

Given the absence of benchmarks for the N1X 48SM, the RTX 5070 Mobile is the only one of the two whose performance can be evaluated against other GPUs in the database. The recorded data shows the RTX 5070 Mobile performs on par with the RTX 3070 Ti and RTX 2080 Ti, slightly behind the RX 6800 and RX 6700. The N1X 48SM's theoretical compute figures are substantially higher, but without measured scores, those figures remain unverified. Users seeking a GPU with confirmed performance against known rivals should select the RTX 5070 Mobile. Users whose priority is maximum memory capacity and raw theoretical throughput, and who can operate without defined graphics API support, may find the N1X 48SM's specifications more aligned with that need. The database does not provide enough evidence to declare an overall winner.