B300 SXM6 AC: specs and benchmarks
Contents
Summary
NVIDIA started B300 SXM6 AC sales 11 September 2025. This is a Blackwell Ultra architecture desktop card based on 5 nm manufacturing process and primarily aimed at designers. 288 GB of HBM3e memory clocked at 2 GHz are supplied, and together with 8192 Bit memory interface this creates a bandwidth of 8.19 TB/s.
Compatibility-wise, this is a sxm module graphics card attached via PCIe 6.0 x16 interface. No additional power connector is required, and power consumption is at 1100 Watt.
Primary details
Some basic facts about B300 SXM6 AC: architecture, market segment, release date etc.
| Place in the ranking | not rated | |
| Place by popularity | not in top-100 | |
| Architecture | Blackwell Ultra (2025) | |
| GPU code name | GB110 | |
| Market segment | Workstation | |
| Release date | 11 September 2025 (less than a year ago) |
Detailed specifications
B300 SXM6 AC's specs such as number of shaders, GPU base clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of B300 SXM6 AC's performance, but for precise assessment you have to consider its benchmark and gaming test results.
| Pipelines / CUDA cores | 18944 | of 57344 (Rubin Ultra GPU) |
| Core clock speed | 1665 MHz | of 2670 MHz (Arc B580) |
| Boost clock speed | 2032 MHz | of 3130 MHz (Radeon RX 9060 XT 16 GB) |
| Number of transistors | 208,000 million | of 670,000 million (Rubin Ultra GPU) |
| Manufacturing process technology | 5 nm | of 2 nm (Radeon Instinct MI455X) |
| Power consumption (TDP) | 1100 Watt | of 3600 Watt (Rubin Ultra GPU) |
| Texture fill rate | 1,202.9 | of 4,062.5 (Rubin Ultra GPU) |
| Floating-point processing power | 76.99 TFLOPS | of 260 (Rubin Ultra GPU) |
| ROPs | 24 | of 512 (Moore Threads MTT S4000) |
| TMUs | 592 | of 1792 (Rubin Ultra GPU) |
| Tensor Cores | 592 | of 1792 (Rubin Ultra GPU) |
| L1 Cache | 37 MB | of 112 MB (Rubin Ultra GPU) |
| L2 Cache | 126 MB | of 408 MB (Data Center GPU Max 1350) |
Form factor & compatibility
This section provides details about the physical dimensions of B300 SXM6 AC 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 6.0 x16 | |
| Width | SXM Module |
VRAM capacity and type
Parameters of memory installed on B300 SXM6 AC: 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 | HBM3e | |
| Maximum RAM amount | 288 GB | of 432 GB (Radeon Instinct MI455X) |
| Memory bus width | 8192 Bit | of 32768 Bit (Rubin Ultra GPU) |
| Memory clock speed | 2000 MHz | of 16000 GB/s (GeForce RTX 4050 Mobile) |
| Memory bandwidth | 8.19 TB/s | of 3,277 GB/s (Radeon Instinct MI250X) |
| Resizable BAR | + |
Connectivity and outputs
Types and number of video connectors present on B300 SXM6 AC. 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 | No outputs |
API and SDK support
APIs supported by B300 SXM6 AC, 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 | 10.3 | |
| DLSS | + |
Benchmark performance
Synthetic benchmark performance of B300 SXM6 AC. The combined score is measured on a 0-100 point scale.
GeekBench 5 OpenCL
Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses OpenCL API by Khronos Group.
Send your test results of B300 SXM6 AC.
AMD equivalent
According to our data, the closest AMD alternative to B300 SXM6 AC is Radeon PRO W7900.
Similar GPUs
Here is our recommendation of several graphics cards that are more or less close in performance to the one reviewed.
Recommended processors
These processors are most commonly used with B300 SXM6 AC according to our statistics.
