B300 SXM6 AC vs H100 PCIe
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Hopper (2022−2024) | Blackwell Ultra (2025) |
| GPU code name | GH100 | GB110 |
| Market segment | Workstation | Workstation |
| Release date | 22 March 2022 (4 years ago) | 11 September 2025 (1 year ago) |
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.
| Pipelines / CUDA cores | 7296 | 18944 |
| Core clock speed | 1065 MHz | 1665 MHz |
| Boost clock speed | 1650 MHz | 2032 MHz |
| Number of transistors | 80,000 million | 208,000 million |
| Manufacturing process technology | 4 nm | 5 nm |
| Power consumption (TDP) | 350 Watt | 1100 Watt |
| Texture fill rate | 752.4 | 1,202.9 |
| Floating-point processing power | 24.08 TFLOPS | 76.99 TFLOPS |
| ROPs | 24 | 24 |
| TMUs | 456 | 592 |
| Tensor Cores | 456 | 592 |
| L1 Cache | 21.4 MB | 37 MB |
| L2 Cache | 50 MB | 126 MB |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Interface | PCIe 5.0 x16 | PCIe 6.0 x16 |
| Length | 267 mm | no data |
| Width | 2-slot | SXM Module |
| Supplementary power connectors | 8-pin EPS | no data |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | HBM2e | HBM3e |
| Maximum RAM amount | 80 GB | 288 GB |
| Memory bus width | 5120 Bit | 8192 Bit |
| Memory clock speed | 1000 MHz | 2000 MHz |
| Memory bandwidth | 1,280 GB/s | 8.19 TB/s |
| Resizable BAR | + | + |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | No outputs | No outputs |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | N/A | N/A |
| Shader Model | N/A | N/A |
| OpenGL | N/A | N/A |
| OpenCL | 3.0 | 3.0 |
| Vulkan | N/A | N/A |
| CUDA | 9.0 | 10.3 |
| DLSS | + | + |
Synthetic benchmarks
Non-gaming benchmark results comparison. 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.
Pros & cons summary
| Recency | 22 March 2022 | 11 September 2025 |
| Maximum RAM amount | 80 GB | 288 GB |
| Chip lithography | 4 nm | 5 nm |
| Power consumption (TDP) | 350 Watt | 1100 Watt |
H100 PCIe has a 20% more advanced lithography process, and 68% lower power consumption.
B300 SXM6 AC, on the other hand, has an age advantage of 3 years, and a 72% higher maximum VRAM amount.
We couldn't decide between H100 PCIe and B300 SXM6 AC. We've got no test results to judge.
Other comparisons
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