NVIDIA N1 20SM vs NVIDIA RTX 500 Mobile Ada Generation Comparison

Where Each One Wins

The NVIDIA N1 20SM and the NVIDIA RTX 500 Mobile Ada Generation occupy different positions in the mobile graphics landscape. The N1 20SM is designed as an integrated graphics processor for the Blackwell IGP (N1x) generation, built on the Blackwell 2.0 architecture. The RTX 500 Mobile Ada Generation is a dedicated mobile GPU from the Ada-MW (x000A) generation, built on Ada Lovelace architecture.

The N1 20SM wins in raw compute throughput. Its FP32 performance reaches 12.01 TFLOPS, while the RTX 500 Mobile Ada Generation delivers 8.294 TFLOPS. The N1 20SM also leads in texture processing, with a texture rate of 375.4 GTexel/s compared to 129.6 GTexel/s for the RTX 500. These numbers indicate the N1 20SM is substantially ahead in workloads that rely on shader computation and texture fetching.

Memory capacity heavily favors the N1 20SM. The integrated processor comes with 128 GB of LPDDR5X memory, whereas the RTX 500 Mobile has 4 GB of GDDR6. Memory bandwidth also favors the N1 20SM at 273.2 GB/s versus 128.0 GB/s. The N1 20SM uses a 256-bit memory bus, while the RTX 500 Mobile uses a 64-bit bus. For applications that require large datasets resident in GPU memory, or workloads that stream significant amounts of data, the N1 20SM provides a decisive advantage.

The RTX 500 Mobile Ada Generation wins in pixel throughput. Its pixel rate reaches 64.80 GPixel/s, exceeding the N1 20SM's 56.30 GPixel/s. This advantage comes from having 32 ROPs compared to 24 ROPs on the N1 20SM. For rasterization-heavy tasks, particularly at lower resolutions where pixel fill rate becomes a limiting factor, the RTX 500 Mobile holds the edge.

The RTX 500 Mobile also wins in API support. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1 20SM lists DirectX as N/A, OpenGL as N/A, and Vulkan as N/A. This means the RTX 500 Mobile can run modern graphics APIs directly, while the N1 20SM's API compatibility is not documented in the database. For gaming and general graphics applications that require these APIs, the RTX 500 Mobile is the only option between these two.

Clock speeds differ notably. The RTX 500 Mobile has a base clock of 1485 MHz and a boost clock of 2025 MHz. The N1 20SM has a base clock of 741 MHz and a boost clock of 2346 MHz. The N1 20SM boosts higher, but its base clock is much lower. Memory clocks also differ, with the N1 20SM running at 1067 MHz (8.5 Gbps effective) and the RTX 500 Mobile at 2000 MHz (16 Gbps effective). The higher memory clock on the RTX 500 Mobile does not compensate for its narrower bus.

Architecture Differences

The N1 20SM uses the GB20B chip and is built on the Blackwell 2.0 architecture. The RTX 500 Mobile uses the AD107 chip and is built on Ada Lovelace. Both are manufactured by TSMC on a 5 nm process, so the underlying transistor fabrication is identical. The die sizes differ substantially: the GB20B measures 382 mm², while the AD107 measures 159 mm². The RTX 500 Mobile's transistor count is recorded at 18,900 million, with a transistor density of 118.9M per mm². The N1 20SM's transistor count is listed as unknown, and its transistor density is not recorded.

The N1 20SM has 2560 shading units, 160 texture mapping units, and 24 ROPs. It includes 20 ray tracing cores and 80 tensor cores. The RTX 500 Mobile has 2048 shading units, 64 TMUs, and 32 ROPs. It includes 16 ray tracing cores and 64 tensor cores. The N1 20SM has more shading units, more TMUs, more ray tracing cores, and more tensor cores, but fewer ROPs.

Memory architecture differs completely. The N1 20SM uses 128 GB of LPDDR5X with a 256-bit bus and 273.2 GB/s bandwidth. The RTX 500 Mobile uses 4 GB of GDDR6 with a 64-bit bus and 128.0 GB/s bandwidth. The N1 20SM's memory configuration is typical of an integrated processor that shares system memory, though the database does not specify whether this is shared or dedicated. The RTX 500 Mobile's 4 GB configuration is clearly a dedicated memory pool.

The bus interface also differs. The N1 20SM uses PCIe 5.0 x16, while the RTX 500 Mobile uses PCIe 4.0 x8. The N1 20SM's interface provides more bandwidth to the host system, which aligns with its role as an integrated processor.

Power characteristics differ. The RTX 500 Mobile has a recorded TDP of 35 W. The N1 20SM's TDP is listed as unknown. Both are classified as IGP in slot width, and both have no power connectors. The RTX 500 Mobile's display outputs are listed as "Portable Device Dependent," while the N1 20SM has a single HDMI output.

The release dates differ by more than two years. The RTX 500 Mobile was released on 2024-02-25, while the N1 20SM was released on 2026-05-31. The RTX 500 Mobile has a predecessor (Ampere-MW) and a successor (Blackwell-MW). The N1 20SM lists no predecessor and no successor.

Head-to-Head Benchmarks

The database records no head-to-head benchmark entries between these two GPUs. Both have zero benchmark scores, zero wins in their respective categories, and an identical percentile ranking of 50 against all GPUs in the database. The average benchmark score for both is zero.

The absence of recorded benchmarks means the comparison must rely on the specification-level data. The FP32 compute differential is significant. The N1 20SM delivers 12.01 TFLOPS, which is approximately 45% higher than the RTX 500 Mobile's 8.294 TFLOPS. In FP16, both GPUs operate at a 1:1 ratio with their FP32 rates, so the N1 20SM also leads in half-precision compute by the same margin.

Texture rate provides another clear separation. The N1 20SM's 375.4 GTexel/s is roughly 2.9 times the RTX 500 Mobile's 129.6 GTexel/s. This disparity stems from the N1 20SM having 160 TMUs versus 64 TMUs on the RTX 500 Mobile. In texture-heavy workloads, such as certain rendering pipelines or image processing tasks, the N1 20SM has a substantial advantage.

Pixel rate goes the other way. The RTX 500 Mobile's 64.80 GPixel/s exceeds the N1 20SM's 56.30 GPixel/s by approximately 15%. This advantage comes from the RTX 500 Mobile having 32 ROPs versus 24 ROPs on the N1 20SM. The RTX 500 Mobile also runs at a higher base clock (1485 MHz versus 741 MHz), which contributes to its pixel throughput advantage despite the lower boost clock.

Memory bandwidth favors the N1 20SM by a factor of roughly 2.1. The 273.2 GB/s bandwidth on the N1 20SM versus 128.0 GB/s on the RTX 500 Mobile means the N1 20SM can move data to and from memory much faster. This is particularly relevant for workloads that repeatedly access large buffers or textures.

The RTX 500 Mobile's API support gives it a functional advantage in software compatibility. DirectX 12 Ultimate (12_2) support means the RTX 500 Mobile can run the latest DirectX 12 features. OpenGL 4.6 and Vulkan 1.4 support broaden its compatibility across different graphics stacks. The N1 20SM's API support is listed as N/A across all three APIs, which suggests the database does not currently record this information, or the GPU does not expose these APIs directly.

Both GPUs maintain a 1:1 FP16 to FP32 ratio, which means neither has a dedicated half-precision acceleration path that doubles throughput. This puts both on equal footing for mixed-precision workloads that rely on FP16.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The NVIDIA N1 20SM delivers 12.01 TFLOPS FP32, while the NVIDIA RTX 500 Mobile Ada Generation delivers 8.294 TFLOPS FP32. The N1 20SM leads by approximately 45% in raw shader compute.

Q: How do the memory configurations compare?

A: The N1 20SM has 128 GB of LPDDR5X on a 256-bit bus with 273.2 GB/s bandwidth. The RTX 500 Mobile has 4 GB of GDDR6 on a 64-bit bus with 128.0 GB/s bandwidth. The N1 20SM provides over twice the memory bandwidth and 32 times the memory capacity.

Q: Which GPU supports modern graphics APIs?

A: The RTX 500 Mobile Ada Generation supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1 20SM lists DirectX, OpenGL, and Vulkan as N/A in the database.

Q: What is the pixel fill rate difference?

A: The RTX 500 Mobile achieves 64.80 GPixel/s, which is higher than the N1 20SM's 56.30 GPixel/s. The RTX 500 Mobile has 32 ROPs compared to 24 ROPs on the N1 20SM.

Q: What are the process nodes for both GPUs?

A: Both GPUs are manufactured by TSMC on a 5 nm process. The N1 20SM uses the GB20B chip, and the RTX 500 Mobile uses the AD107 chip.

Q: What are the release dates for each GPU?

A: The RTX 500 Mobile Ada Generation was released on 2024-02-25. The NVIDIA N1 20SM was released on 2026-05-31.

Specification Differences

The two GPUs differ across nearly every recorded specification field.

Architecture and Chip: The N1 20SM uses the GB20B chip with Blackwell 2.0 architecture. The RTX 500 Mobile uses the AD107 chip with Ada Lovelace architecture. The N1 20SM belongs to the Blackwell IGP (N1x) generation, while the RTX 500 Mobile belongs to the Ada-MW (x000A) generation.

Process and Die: Both use a 5 nm TSMC process. The N1 20SM has a die size of 382 mm². The RTX 500 Mobile has a die size of 159 mm² and a transistor count of 18,900 million. The N1 20SM's transistor count is listed as unknown.

Clocks: The N1 20SM has a base clock of 741 MHz and a boost clock of 2346 MHz. The RTX 500 Mobile has a base clock of 1485 MHz and a boost clock of 2025 MHz. Memory clocks are 1067 MHz (8.5 Gbps effective) for the N1 20SM and 2000 MHz (16 Gbps effective) for the RTX 500 Mobile.

Memory: The N1 20SM has 128 GB of LPDDR5X with a 256-bit bus and 273.2 GB/s bandwidth. The RTX 500 Mobile has 4 GB of GDDR6 with a 64-bit bus and 128.0 GB/s bandwidth.

Compute Units: The N1 20SM has 2560 shading units, 160 TMUs, 24 ROPs, 20 ray tracing cores, and 80 tensor cores. The RTX 500 Mobile has 2048 shading units, 64 TMUs, 32 ROPs, 16 ray tracing cores, and 64 tensor cores.

Rates: The N1 20SM has a pixel rate of 56.30 GPixel/s and a texture rate of 375.4 GTexel/s. The RTX 500 Mobile has a pixel rate of 64.80 GPixel/s and a texture rate of 129.6 GTexel/s. FP32 and FP16 are both 12.01 TFLOPS on the N1 20SM and 8.294 TFLOPS on the RTX 500 Mobile.

Power and Physical: The RTX 500 Mobile has a TDP of 35 W. The N1 20SM's TDP is unknown. Both have IGP slot width and no power connectors. The N1 20SM uses PCIe 5.0 x16, while the RTX 500 Mobile uses PCIe 4.0 x8.

Display Outputs: The N1 20SM has 1x HDMI. The RTX 500 Mobile's display outputs are listed as "Portable Device Dependent."

API Support: The N1 20SM lists DirectX, OpenGL, and Vulkan as N/A. The RTX 500 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Release and Status: The N1 20SM was released on 2026-05-31, and the RTX 500 Mobile was released on 2024-02-25. Both are marked as Active in production status. The RTX 500 Mobile has a predecessor (Ampere-MW) and a successor (Blackwell-MW). The N1 20SM has neither.