NVIDIA B300 SXM6 AC vs NVIDIA N1 16SM Comparison

FAQ

Q: What is the single biggest performance difference between the NVIDIA B300 SXM6 AC and the NVIDIA N1 16SM?

A: The B300 SXM6 AC records an average benchmark score of 369,831 in Geekbench OpenCL, while the N1 16SM has no recorded benchmark scores and an average score of 0. The B300 sits at the 100th percentile among all GPUs, whereas the N1 sits at the 50th percentile.

Q: How does the B300 SXM6 AC compare to its nearest rivals?

A: The B300 is 7% ahead of the NVIDIA B200, 10.4% ahead of the NVIDIA H200 NVL, 16.3% ahead of the AMD Instinct MI300X, and 25% ahead of the NVIDIA L40S in average benchmark scores.

Q: What are the memory configurations of these two parts?

A: The B300 SXM6 AC uses 288 GB of HBM3e memory on an 8192-bit bus, delivering 8.19 TB/s of bandwidth. The N1 16SM uses 128 GB of LPDDR5X memory on a 256-bit bus, delivering 273.2 GB/s of bandwidth.

Q: Which part has a higher boost clock?

A: The N1 16SM has a boost clock of 2346 MHz, which is higher than the B300 SXM6 AC's boost clock of 2032 MHz. However, the B300's base clock of 1665 MHz is significantly higher than the N1's base clock of 741 MHz.

Q: Do these GPUs support standard graphics APIs like DirectX or Vulkan?

A: No. Both the B300 SXM6 AC and the N1 16SM list DirectX, OpenGL, and Vulkan as N/A. Neither part is designed for conventional graphics API workloads.

Q: What are the release dates for these products?

A: The B300 SXM6 AC was released on September 10, 2025, while the N1 16SM has a release date of May 31, 2026.

Architecture Differences

The B300 SXM6 AC is built on the Blackwell Ultra architecture using the GB110 chip, while the N1 16SM uses the Blackwell 2.0 architecture with the GB20B chip. Both are fabricated by TSMC on a 5 nm process node, but the physical implementation differs substantially.

The B300's die measures 1628 mm² and contains 208,000 million transistors, giving it a transistor density of 127.8 million per mm². The N1's die is 382 mm², and its transistor count is listed as unknown in the database. This size disparity reflects fundamentally different design goals: the B300 is a server-class accelerator module, while the N1 is an integrated graphics processor (IGP).

The B300 belongs to the Server Blackwell (Bxx) generation with a predecessor in the Server Hopper line and a successor in Server Rubin. The N1 belongs to the Blackwell IGP (N1x) generation and has no recorded predecessor or successor in the database.

Ray tracing hardware is another clear differentiator. The N1 includes 16 dedicated RT cores, while the B300 lists no RT core count. The B300 does include 592 tensor cores, compared to 64 on the N1, but the N1's tensor core arrangement is part of a much smaller overall compute configuration.

The B300 is a SXM Module with a PCIe 6.0 x16 bus interface, while the N1 is an IGP with a PCIe 5.0 x16 interface. The B300 has no display outputs, while the N1 provides one HDMI output. Power delivery also differs: the B300 has a 1100 W TDP and a suggested PSU of 1500 W, while the N1's TDP is unknown and it uses no power connectors.

Where Each One Wins

The B300 SXM6 AC wins decisively in raw compute throughput. Its FP32 performance reaches 76.99 TFLOPS, and its FP16 performance is also 76.99 TFLOPS at a 1:1 ratio. The texture rate is 1,202.9 GTexel/s, and the pixel rate is 48.77 GPixel/s. These figures position it as a high-end server accelerator for large-scale parallel workloads.

The N1 16SM wins in clock speed at the boost level. Its boost clock of 2346 MHz exceeds the B300's 2032 MHz, and its pixel rate of 56.30 GPixel/s is actually higher than the B300's 48.77 GPixel/s despite having far fewer shading units. The N1 also has a higher base memory clock in terms of effective data rate: 8.5 Gbps effective versus 8 Gbps effective on the B300.

The N1's integrated design with a single HDMI output makes it suitable for display-capable systems, whereas the B300 has no display outputs and is clearly intended for headless server deployment. The N1's PCIe 5.0 interface, while one generation behind the B300's PCIe 6.0, is still a modern connection standard.

For memory efficiency per unit of bandwidth, the N1's LPDDR5X memory operates at a much lower power envelope than the B300's HBM3e, though the database does not record a TDP for the N1. The B300's 288 GB capacity and 8.19 TB/s bandwidth are in a different performance class entirely.

Specification Differences

The two parts differ on nearly every specification field in the database. The B300 uses the GB110 chip with the Blackwell Ultra architecture, while the N1 uses the GB20B chip with the Blackwell 2.0 architecture. The B300 has a 1628 mm² die, while the N1 has a 382 mm² die.

Compute resources diverge sharply. The B300 has 18,944 shading units, 592 TMUs, and 24 ROPs. The N1 has 2,048 shading units, 128 TMUs, and 24 ROPs. The B300 has 592 tensor cores and no listed RT cores; the N1 has 64 tensor cores and 16 RT cores.

Memory configurations are completely different. The B300 uses 288 GB of HBM3e with an 8192-bit bus and 8.19 TB/s bandwidth. The N1 uses 128 GB of LPDDR5X with a 256-bit bus and 273.2 GB/s bandwidth. The B300's memory clock is 2000 MHz with 8 Gbps effective, while the N1's is 1067 MHz with 8.5 Gbps effective.

Clock speeds differ in both base and boost. The B300 runs at 1665 MHz base and 2032 MHz boost. The N1 runs at 741 MHz base and 2346 MHz boost.

Form factor and power also differ. The B300 is a SXM Module with a 1100 W TDP and a 1500 W suggested PSU. The N1 is an IGP with no power connectors and an unknown TDP. The B300 has no display outputs; the N1 has one HDMI output. The B300 uses PCIe 6.0 x16, while the N1 uses PCIe 5.0 x16.

Production status is active for both, but release dates differ by roughly eight months. The B300 launched September 10, 2025, and the N1 is dated May 31, 2026.

Head-to-Head Benchmarks

The database records no direct head-to-head benchmark comparisons between the B300 SXM6 AC and the N1 16SM. The head-to-head benchmark array is empty, and the win counts for both parts are zero. This makes a direct per-test comparison impossible from the recorded data.

However, the available Geekbench OpenCL result for the B300 provides a clear reference point. The B300 scores 369,831, which places it at the 100th percentile among all GPUs in the database. The N1 has no benchmark entries, and its average benchmark score is recorded as 0, placing it at the 50th percentile by default ranking rather than by measured performance.

Using the B300's nearest rivals as a comparison framework, the data shows the B300 outperforms the NVIDIA B200 by 7%, the NVIDIA H200 NVL by 10.4%, the AMD Instinct MI300X by 16.3%, and the NVIDIA L40S by 25%. These deltas give context for the B300's position at the top of the database rankings. The N1 has no nearest rivals listed, which means there is no comparable performance data to anchor its position.

The FP32 throughput difference is stark: the B300 delivers 76.99 TFLOPS versus 9.609 TFLOPS for the N1, a factor of roughly eight. Texture rate follows a similar pattern, with the B300 at 1,202.9 GTexel/s versus 300.3 GTexel/s for the N1. The N1's higher pixel rate of 56.30 GPixel/s versus 48.77 GPixel/s is the one measured metric where it leads, though this is a narrow advantage given the N1's much smaller shading unit count.

Memory bandwidth is the most lopsided comparison. The B300's 8.19 TB/s is approximately 30 times the N1's 273.2 GB/s. The B300 also has more than double the memory capacity at 288 GB versus 128 GB.

The Verdict

The recorded data positions the B300 SXM6 AC as a top-tier server accelerator. Its 100th percentile ranking, 369,831 Geekbench OpenCL score, and consistent leads over the B200, H200 NVL, MI300X, and L40S confirm its performance class. The 8.19 TB/s memory bandwidth, 288 GB capacity, and 76.99 TFLOPS FP32 throughput make it suitable for memory-bound and compute-heavy server workloads.

The N1 16SM is a fundamentally different product. As an IGP with a 382 mm² die, 2,048 shading units, and 128 GB of LPDDR5X memory, it targets a different segment. Its single HDMI output and lack of power connectors indicate an integrated design for systems where discrete accelerator modules are not appropriate. The N1's boost clock of 2346 MHz and pixel rate of 56.30 GPixel/s show it has some strengths, but with no recorded benchmarks, its overall performance cannot be quantified relative to the B300.

The database shows no scenario where the N1 matches the B300 in raw compute. The B300 leads in shading units by a factor of more than nine, in tensor cores by a factor of more than nine, in memory bandwidth by roughly thirty times, and in FP32 throughput by a factor of eight. The N1 leads only in boost clock, pixel rate, and memory clock effective data rate.

For buyers selecting a server accelerator with maximum compute and memory throughput, the B300 SXM6 AC is the clear choice based on the recorded data. For systems requiring an integrated GPU with display output and low power connectors, the N1 16SM fits that role, but its performance profile is not comparable. The absence of benchmark results for the N1 means any performance claims beyond its specifications cannot be substantiated from the database. The B300's measured results and rival deltas provide the only concrete performance evidence available.