NVIDIA N1 16SM

Memory Subsystem

The NVIDIA N1 16SM integrates a substantial 128 GB of LPDDR5X memory, a configuration that immediately signals its target use case is not conventional desktop gaming but rather high-capacity compute or visualization workloads. The memory operates at an effective speed of 8.5 Gbps, which is modest by discrete GPU standards, but the 256-bit bus width compensates significantly.

Total memory bandwidth reaches 273.2 GB/s. For context, this figure is derived from the memory clock and bus width combination, and it represents the ceiling for data movement between the GPU and its frame buffer. In high-resolution scenarios, such as 4K or multi-display setups, the available VRAM capacity is effectively unbounded for nearly any dataset, but the bandwidth will be the limiting factor for texture streaming and large buffer operations.

The 128 GB capacity is the defining characteristic here. No benchmark data in the pack suggests how this performs in real workloads, but the sheer size implies the N1 16SM is designed for tasks that require holding massive datasets entirely on-chip, such as large language model inference, scientific simulation, or complex 3D scene compositing. The 273.2 GB/s bandwidth, while not class-leading, is sufficient to feed the 2048 shading units at the chip's clock speeds without obvious starvation, though it will not match the throughput of higher-bandwidth discrete solutions.

For high-resolution rendering, the 128 GB frame buffer eliminates any concern about running out of memory, even with extreme texture packs or multi-frame rendering techniques. However, the 256-bit bus and 8.5 Gbps effective memory speed cap the rate at which data can be moved, meaning that scenes with heavy texture churn or frequent buffer swaps will see performance limited by bandwidth rather than compute. The pixel rate of 56.30 GPixel/s and texture rate of 300.3 GTexel/s provide additional context: the chip can theoretically fill a 4K display at high refresh rates, but the memory subsystem's 273.2 GB/s will govern how quickly new data can be loaded.

Ray Tracing and Feature Set

The N1 16SM includes 16 dedicated RT cores and 64 tensor cores, both essential for modern accelerated workloads. The RT cores handle ray traversal and intersection calculations, while the tensor cores are optimized for matrix operations used in neural network-based features like DLSS or AI denoising. The presence of these units confirms the chip is architecturally capable of hardware-accelerated ray tracing and tensor-based processing.

However, the API support in the FACT PACK is listed as "N/A" for DirectX, OpenGL, and Vulkan. This is a critical detail. The N1 16SM is not a standard consumer graphics card that runs typical gaming APIs. It is an IGP (Integrated Graphics Processor) in the Blackwell IGP (N1x) generation, and its software ecosystem appears to rely on proprietary or compute-focused APIs rather than the DirectX/Vulkan standards that dominate gaming and professional 3D applications.

The 16 RT cores and 64 tensor cores are relatively modest counts compared to what the shading units (2048) might imply. This suggests the chip is balanced for mixed workloads where ray tracing is used selectively, not as a primary renderer. The tensor cores, at 64, provide a solid foundation for AI inference tasks, but their exact throughput is not specified in the pack beyond the FP16 figure of 9.609 TFLOPS (1:1), which applies equally to FP32 and FP16 operations.

The display output is a single HDMI port, reinforcing the non-standard positioning. There are no DisplayPort outputs listed, which would limit multi-monitor professional setups. The bus interface is PCIe 5.0 x16, which provides ample bandwidth for host communication, but the lack of standard graphics APIs means the chip will likely be used for compute offload or specialized rendering pipelines that bypass traditional graphics stacks.

Benchmark Performance

The FACT PACK lists zero benchmark entries and zero nearest rivals. The average benchmark score is 0, and the percentile versus all GPUs is 50. This means the N1 16SM sits exactly at the midpoint of all GPUs in the database, but with no actual scores to analyze, any performance interpretation must be inferred from the raw specifications.

The FP32 compute throughput is 9.609 TFLOPS, and FP16 matches at 9.609 TFLOPS with a 1:1 ratio. This indicates there is no half-rate FP16 penalty, which is typical for compute-oriented designs. The texture rate of 300.3 GTexel/s and pixel rate of 56.30 GPixel/s are derived from the 128 TMUs and 24 ROPs running at the boost clock of 2346 MHz. The 24 ROPs are a notably low count, which will limit fill-rate-bound scenarios. This is a deliberate design choice: the chip prioritizes compute and texture throughput over pixel pushing.

Without rival scores, the percentile of 50 provides the only comparative anchor. This means half of all GPUs in the database score higher and half score lower, but the lack of a specific score makes it impossible to quantify the gap. The base clock of 741 MHz is very low, while the boost clock of 2346 MHz is respectable, indicating a significant dynamic range. The chip idles at a low power state and boosts aggressively when needed.

The FP32 figure of 9.609 TFLOPS is moderate, it would place the N1 16SM in the mid-range of desktop GPUs from recent generations, but the 128 GB memory and IGP form factor suggest a different performance envelope. The chip is unlikely to compete with high-end discrete GPUs in raw rasterization, but for memory-bound compute workloads, the 128 GB capacity is a unique advantage that no rival in the database can match.

Who Should Consider It

The N1 16SM is not a conventional gaming GPU, but its specifications point to several distinct user profiles. Those who need to process datasets larger than what a typical 8-16 GB VRAM buffer can hold will find the 128 GB capacity transformative. Large language model inference, for example, can require tens of gigabytes of weights and activations; the N1 16SM can hold entire models in memory without swapping to system RAM.

For creative professionals working with massive 3D scenes or high-resolution video compositing, the 2048 shading units and 300.3 GTexel/s texture rate provide adequate compute, while the 128 GB frame buffer allows for extremely long timelines or multi-layer composites without memory pressure. The 273.2 GB/s bandwidth is the limiting factor here, it will handle moderate resolution work well but may struggle with 8K real-time editing or heavy multi-stream playback.

At 1080p and 1440p resolutions, the N1 16SM should deliver smooth performance in most non-ray-traced workloads, given the 9.609 TFLOPS compute and 56.30 GPixel/s pixel rate. The 24 ROPs may cause bottlenecks in effects-heavy scenes, but for typical game engines that rely more on shader and texture work, the chip should hold its own. At 4K, the pixel rate becomes more marginal, and the bandwidth of 273.2 GB/s will likely limit performance in high-detail scenarios.

Users who require standard graphics API support (DirectX, Vulkan, OpenGL) should look elsewhere, as the N1 16SM lists "N/A" for all three. This means no mainstream gaming, no CAD software, and no game engine that relies on these APIs. The single HDMI output further limits its use as a display adapter. This is a compute-first device, and its target audience understands that.

FAQ

Q: How much memory does the NVIDIA N1 16SM have?

A: The N1 16SM has 128 GB of LPDDR5X memory on a 256-bit bus, providing 273.2 GB/s of bandwidth.

Q: What is the compute performance of the N1 16SM?

A: It offers 9.609 TFLOPS of FP32 and FP16 compute, with a 1:1 ratio between the two. The texture rate is 300.3 GTexel/s and the pixel rate is 56.30 GPixel/s.

Q: Does the N1 16SM support ray tracing?

A: It includes 16 RT cores and 64 tensor cores, indicating hardware support for ray tracing and tensor operations. However, the DirectX, OpenGL, and Vulkan API support is listed as N/A.

Q: What display outputs does the N1 16SM have?

A: The chip has a single HDMI output. No DisplayPort or other outputs are listed.

Q: What is the bus interface of the N1 16SM?

A: It uses a PCIe 5.0 x16 connection, which provides high bandwidth for host data transfer.

Q: What is the clock speed of the N1 16SM?

A: The base clock is 741 MHz and the boost clock is 2346 MHz. Memory runs at 1067 MHz, or 8.5 Gbps effective.

Power and Cooling

The FACT PACK lists the TDP as "unknown", which means no thermal design power figure is available for this chip. However, the power connector requirement is listed as "None", and the slot width is "IGP" (Integrated Graphics Processor). This indicates the N1 16SM is designed to draw power from the motherboard slot rather than requiring a dedicated power cable.

The suggested PSU is also listed as null, which aligns with the IGP form factor, no aftermarket power supply recommendation is necessary because the chip is not meant to be installed as a discrete card. The 741 MHz base clock and 2346 MHz boost clock suggest a wide power envelope, but without a TDP number, it is impossible to estimate actual heat output.

The lack of a power connector and the IGP slot width strongly imply that the N1 16SM is a soldered or module-based solution, not a standalone graphics card. Cooling would be provided by the system into which it is integrated, likely a laptop or a compact workstation. The 5 nm TSMC process node helps with efficiency, but the 2048 shading units and 64 tensor cores will generate some heat under load.

Users should not expect to retrofit this chip into an existing desktop. The "None" power connector and IGP form factor mean it is not compatible with standard PCIe power cables. The system integrator is responsible for providing adequate cooling, and the unknown TDP makes it difficult to recommend a specific cooling solution. The 382 mm² die size indicates a moderately large chip, which will require a capable cooling solution, but the low base clock suggests that idle power is minimal.

How It Compares

The FACT PACK lists no nearest rivals for the NVIDIA N1 16SM. This is a unique situation where the database has no comparative scores or delta percentages to reference. The percentile of 50 versus all GPUs provides the only ranking context, placing the chip exactly in the middle of the entire GPU database.

Without rival names or scores, it is impossible to state how the N1 16SM compares to any specific product. The 128 GB memory capacity is exceptional, but the 273.2 GB/s bandwidth is moderate. The 9.609 TFLOPS FP32 performance is mid-range. The 24 ROPs are low. The API support is non-standard.

The absence of benchmark scores and rivals means any comparison must be speculative. The chip likely competes in a niche where memory capacity trumps raw speed, but no data in the pack confirms this. The production status is "Active", so it is currently available, but its market positioning remains unclear from the available information.

Architecture and Design

The NVIDIA N1 16SM is built on the Blackwell 2.0 architecture, specifically the GB20B chip. It is manufactured by TSMC on a 5 nm process node, with a die size of 382 mm². The transistor count is listed as "unknown", but the die size and process node suggest a complex chip.

The chip belongs to the "Blackwell IGP (N1x)" generation, which is distinct from NVIDIA's discrete GPU lines. The architecture features 2048 shading units, 128 texture mapping units, and 24 raster operation units. The core configuration is unusual: the shading unit count is respectable, but the ROP count is very low, and the TMU count is high relative to the ROPs.

The 16 RT cores and 64 tensor cores are integrated into the architecture, providing hardware acceleration for ray tracing and AI workloads. The FP32 and FP16 throughput are both 9.609 TFLOPS, with a 1:1 ratio, meaning no half-rate penalty for FP16 operations. This is a compute-oriented design that prioritizes general-purpose and AI workloads over traditional 3D rendering.

The memory controller is 256-bit wide, interfacing with 128 GB of LPDDR5X. The die size of 382 mm² is substantial, likely due to the large memory interface and the integrated tensor and RT cores. The base clock of 741 MHz is very low, while the boost clock of 2346 MHz is relatively high, indicating a design that conserves power at idle and ramps up aggressively under load.

The bus interface is PCIe 5.0 x16, which is current-generation and provides ample bandwidth for data transfer between the chip and the host system. The display output is a single HDMI port, which is minimal. The production status is "Active", and the release date is May 31, 2026. The chip has no listed predecessor or successor in the FACT PACK, suggesting it is a standalone product in its generation.