NVIDIA B300 SXM6 AC vs NVIDIA RTX 3000 Mobile Ada Generation Comparison

Head-to-Head Benchmarks

The direct benchmark comparison between the NVIDIA B300 SXM6 AC and the NVIDIA RTX 3000 Mobile Ada Generation is limited by the available data. The database records a single OpenCL score for the B300 SXM6 AC, while the RTX 3000 Mobile has no recorded benchmark entries, leaving its average score at zero. Consequently, there are no head-to-head wins assigned to either product in the database, and the win counts stand at zero for both parts.

The B300 SXM6 AC achieves a Geekbench OpenCL score of 369,831. This places it in the 100th percentile among all GPUs in the database, meaning it outperforms every other recorded graphics processor. For context, the nearest rival in the database is the NVIDIA B200, which posts an average score of 345,482. The B300 SXM6 AC leads that part by 7%. Against the NVIDIA H200 NVL, the advantage expands to 10.4%, with the H200 NVL averaging 334,891 points. The AMD Instinct MI300X trails by 16.3%, scoring 317,994 on average, while the NVIDIA L40S sits 25% behind with 295,763 points.

Because the RTX 3000 Mobile Ada Generation has no recorded benchmark score, the database cannot quantify its performance relative to the B300 SXM6 AC or any other part. The percentile ranking for the mobile GPU stands at 50, which reflects the median position among all GPUs in the database, but this value is derived from the absence of test data rather than a measured performance result. The recorded data shows that the B300 SXM6 AC is the top-performing GPU in the database by OpenCL score, while the RTX 3000 Mobile remains uncharacterized in terms of measured benchmarks.

Architecture Differences

The two GPUs come from different NVIDIA architecture lines and serve distinctly different market segments. The B300 SXM6 AC is built on the GB110 chip using the Blackwell Ultra architecture, part of the Server Blackwell generation. It is fabricated on a 5 nm process at TSMC, with a die size of 1628 mm² and 208,000 million transistors. The transistor density is 127.8 million per square millimeter. The RTX 3000 Mobile Ada Generation uses the AD106 chip under the Ada Lovelace architecture, from the Ada-MW generation. It also uses a 5 nm TSMC process, but the die is 188 mm² with 22,900 million transistors, yielding a density of 121.8 million per square millimeter. Both parts share the same process node and foundry, but the B300 SXM6 AC packs roughly nine times the transistor count and more than eight times the die area.

Memory architecture diverges sharply. The B300 SXM6 AC ships with 288 GB of HBM3e memory on an 8192-bit bus, delivering 8.19 TB/s of bandwidth. Memory clock is listed at 2000 MHz with 8 Gbps effective transfer. The RTX 3000 Mobile has 8 GB of GDDR6 on a 128-bit bus, providing 256.0 GB/s of bandwidth, with a 2000 MHz memory clock at 16 Gbps effective. The bandwidth gap is substantial, with the server part offering more than 30 times the memory throughput of the mobile part.

Compute resources also differ by a wide margin. The B300 SXM6 AC contains 18,944 shading units, 592 texture mapping units, and 24 ROPs. It also has 592 tensor cores, with no dedicated RT core count listed in the database. The RTX 3000 Mobile has 4,608 shading units, 144 TMUs, and 48 ROPs, along with 36 RT cores and 144 tensor cores. Pixel rate for the B300 SXM6 AC is 48.77 GPixel/s, while the RTX 3000 Mobile achieves 81.36 GPixel/s, a higher pixel throughput despite its smaller overall compute configuration. Texture rate favors the server part substantially: 1,202.9 GTexel/s versus 244.1 GTexel/s.

Floating-point performance follows the same pattern. The B300 SXM6 AC delivers 76.99 TFLOPS for both FP32 and FP16 at a 1:1 ratio. The RTX 3000 Mobile provides 15.62 TFLOPS for FP32 and FP16, also at 1:1. The server GPU offers nearly five times the FP32 throughput.

Clock speeds and power draw reflect the different form factors. The B300 SXM6 AC runs at a base clock of 1665 MHz and a boost of 2032 MHz, with a TDP of 1100 W and a suggested PSU of 1500 W. It uses an SXM module slot width with PCIe 6.0 x16 interface. The RTX 3000 Mobile has a base clock of 1395 MHz and a boost of 1695 MHz, with a TDP of 115 W and an IGP slot width on PCIe 4.0 x16. The mobile GPU has no power connectors and draws its power through the system, while display outputs are marked as portable device dependent. The B300 SXM6 AC has no display outputs.

API support also separates the two. The RTX 3000 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The B300 SXM6 AC lists N/A for DirectX, OpenGL, and Vulkan, indicating a compute-focused server role without graphics API support.

Production status for both is active. The B300 SXM6 AC released on September 10, 2025, with its predecessor listed as Server Hopper and successor as Server Rubin. The RTX 3000 Mobile released on March 20, 2023, replacing Ampere-MW and succeeded by Blackwell-MW.

The Verdict

The data establishes the B300 SXM6 AC as a compute-oriented server accelerator with maximum memory capacity and bandwidth. Its OpenCL score of 369,831 places it at the top of the database, ahead of the B200 by 7%, the H200 NVL by 10.4%, the MI300X by 16.3%, and the L40S by 25%. The 288 GB HBM3e memory with 8.19 TB/s bandwidth and 76.99 TFLOPS FP32 throughput serve workloads that require massive data movement and parallel computation.

The RTX 3000 Mobile Ada Generation targets portable devices. Its 8 GB GDDR6 memory and 256.0 GB/s bandwidth, combined with 36 RT cores and DirectX 12 Ultimate support, fit graphics and ray-tracing tasks on a 115 W envelope. The pixel rate of 81.36 GPixel/s exceeds the B300 SXM6 AC's 48.77 GPixel/s, which indicates the mobile part handles rasterization output more efficiently relative to its size.

The benchmark results do not provide a direct comparison because the mobile GPU has no recorded scores. The database only confirms that the B300 SXM6 AC is the global leader in measured OpenCL performance, while the RTX 3000 Mobile occupies a median percentile position by default. Users needing a server-grade accelerator for compute-heavy workloads should look to the B300 SXM6 AC based on its recorded dominance. Users requiring a mobile GPU for portable systems must rely on the architectural specifications, since no benchmark data exists for that part.

FAQ

Q: What OpenCL score does the NVIDIA B300 SXM6 AC achieve?

A: The B300 SXM6 AC records a Geekbench OpenCL score of 369,831, placing it in the 100th percentile among all GPUs in the database.

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

A: The B300 SXM6 AC leads 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%.

Q: Does the RTX 3000 Mobile Ada Generation have any benchmark scores?

A: No, the database lists no benchmark entries for the RTX 3000 Mobile, and its average score is 0. Its percentile ranking of 50 reflects the lack of measured data.

Q: What are the memory configurations of the two GPUs?

A: The B300 SXM6 AC has 288 GB of HBM3e memory on an 8192-bit bus with 8.19 TB/s bandwidth. The RTX 3000 Mobile has 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth.

Q: Which GPU has higher FP32 performance?

A: The B300 SXM6 AC delivers 76.99 TFLOPS FP32, while the RTX 3000 Mobile provides 15.62 TFLOPS FP32. The server part is roughly five times faster in this metric.

Q: Do both GPUs support the same graphics APIs?

A: No, the RTX 3000 Mobile supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The B300 SXM6 AC lists N/A for all three APIs.

Where Each One Wins

The B300 SXM6 AC wins in every compute and memory metric recorded in the database. Its shading unit count of 18,944 is more than four times the 4,608 units in the RTX 3000 Mobile. Texture rate reaches 1,202.9 GTexel/s versus 244.1 GTexel/s. FP32 throughput of 76.99 TFLOPS compares to 15.62 TFLOPS. Memory capacity of 288 GB and bandwidth of 8.19 TB/s dwarf the 8 GB and 256.0 GB/s of the mobile part. The 8192-bit bus width is 64 times wider than the 128-bit bus. The B300 SXM6 AC also holds the top percentile ranking at 100, with a measured OpenCL score of 369,831.

The RTX 3000 Mobile Ada Generation wins in pixel rate, posting 81.36 GPixel/s against 48.77 GPixel/s for the B300 SXM6 AC. It also has 48 ROPs compared to 24, and 36 RT cores versus no listed RT cores for the server part. The mobile GPU carries graphics API support with DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the B300 SXM6 AC has no API support. The 115 W TDP and IGP form factor make it suitable for portable systems, whereas the 1100 W TDP and SXM module slot require a server chassis with a 1500 W suggested PSU.

The recorded data indicates the B300 SXM6 AC is the preferred choice for high-throughput compute workloads such as large-scale data processing and AI training, given its memory size, bandwidth, and FP32 throughput. The RTX 3000 Mobile is the only one of the two with display output capability and graphics API support, making it the logical pick for rendering and real-time graphics in portable devices. The absence of benchmark data for the mobile part prevents a direct performance ranking, but the architectural differences clearly define the intended use cases.