NVIDIA N1 20SM: specs and benchmarks
Contents
Summary
NVIDIA started N1 20SM sales 1 June 2026. This is a laptop graphics card based on a Blackwell 2.0 architecture and made with 5 nm manufacturing process. It is primarily aimed at gamers. 128 GB of LPDDR5X memory clocked at 1.07 GHz are supplied, and together with 256 Bit memory interface this creates a bandwidth of 273.2 GB/s.
Compatibility-wise, this is a graphics card attached via PCIe 5.0 x16 interface.
Primary details
Some basic facts about N1 20SM: architecture, market segment, release date etc.
| Place in the ranking | not rated | |
| Place by popularity | not in top-100 | |
| Architecture | Blackwell 2.0 (2025−2026) | |
| GPU code name | GB20B | |
| Market segment | Laptop | |
| Release date | 1 June 2026 (recently) |
Detailed specifications
N1 20SM's specs such as number of shaders, GPU base clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of N1 20SM's performance, but for precise assessment you have to consider its benchmark and gaming test results.
| Pipelines / CUDA cores | 2560 | of 24064 (RTX PRO 6000 Blackwell Server) |
| Core clock speed | 1665 MHz | of 2670 MHz (Arc B580) |
| Boost clock speed | 2418 MHz | of 3130 MHz (Radeon RX 9060 XT 16 GB) |
| Manufacturing process technology | 5 nm | of 3 nm (Arc Pro B390) |
| Texture fill rate | 386.9 | of 2,554 (Radeon Instinct MI300X) |
| Floating-point processing power | 12.38 TFLOPS | of 126 (RTX PRO 6000 Blackwell Server) |
| ROPs | 24 | of 512 (Moore Threads MTT S4000) |
| TMUs | 160 | of 1280 (Data Center GPU Max NEXT) |
| Tensor Cores | 80 | of 1216 (Radeon Instinct MI300X) |
| Ray Tracing Cores | 20 | of 188 (RTX PRO 6000 Blackwell Server) |
| L1 Cache | 2.5 MB | of 64 MB (Data Center GPU Max 1550) |
| L2 Cache | 50 MB | of 408 MB (Data Center GPU Max 1350) |
Form factor & compatibility
This section provides details about the physical dimensions of N1 20SM and its compatibility with other computer components. This information is useful when selecting a computer configuration or upgrading an existing one. For desktop graphics cards, it includes details about the interface and bus (for motherboard compatibility) and additional power connectors (for power supply compatibility).
| Interface | PCIe 5.0 x16 | |
| Supplementary power connectors | None |
VRAM capacity and type
Parameters of memory installed on N1 20SM: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors have no dedicated memory and use a shared part of system RAM instead.
| Memory type | LPDDR5X | |
| Maximum RAM amount | 128 GB | of 288 GB (Radeon Instinct MI325X) |
| Memory bus width | 256 Bit | of 8192 Bit (Radeon Instinct MI250X) |
| Memory clock speed | 1067 MHz | of 16000 GB/s (GeForce RTX 4050 Mobile) |
| Memory bandwidth | 273.2 GB/s | of 5,171 GB/s (Radeon Instinct MI300X) |
| Resizable BAR | + |
Connectivity and outputs
Types and number of video connectors present on N1 20SM. As a rule, this section is relevant only for desktop reference graphics cards, since for notebook ones the availability of certain video outputs depends on the laptop model, while non-reference desktop models can (though not necessarily will) bear a different set of video ports.
| Display Connectors | 1x HDMI | |
| HDMI | + |
API and SDK support
APIs supported by N1 20SM, sometimes including their particular versions.
| DirectX | N/A | |
| Shader Model | N/A | |
| OpenGL | N/A | of 4.6 (GeForce RTX 5090 D) |
| OpenCL | 3.0 | |
| Vulkan | N/A | |
| CUDA | 12.1 | |
| DLSS | + |
AMD equivalent
According to our data, the closest AMD alternative to N1 20SM is Radeon RX 6800M.
Similar GPUs
Here is our recommendation of several graphics cards that are more or less close in performance to the one reviewed.
