NVIDIA B300 SXM6 AC vs NVIDIA RTX 6000 Ada Generation Comparison

NVIDIA’s B300 SXM6 AC and RTX 6000 Ada Generation occupy opposite ends of the compute spectrum, yet both carry the NVIDIA badge. The B300 is a monolithic server module aimed at massive-scale AI workloads, while the RTX 6000 Ada is a workstation card designed for professional graphics and simulation. The data in the FACT PACK reveals a clear performance hierarchy, but the deeper story lies in architectural philosophy and intended use-case fit.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA B300 SXM6 AC scores 369,831 in Geekbench OpenCL, while the RTX 6000 Ada scores 311,629. The B300 leads by 18.7% in their head-to-head benchmark comparison.

Q: How does the B300 compare to its nearest rival, the B200?

A: The B300 posts an average score of 369,831, which is 7% higher than the NVIDIA B200’s 345,482. This places the B300 at the 100th percentile of all GPUs, indicating it is the top performer in the database.

Q: What is the RTX 6000 Ada’s position relative to the L40S?

A: The RTX 6000 Ada’s average score of 287,237 is 2.9% lower than the NVIDIA L40S’s 295,763. Despite this, the RTX 6000 Ada still ranks at the 99th percentile of all GPUs.

Q: Which GPU has more memory, and what type is it?

A: The B300 SXM6 AC features 288 GB of HBM3e memory, whereas the RTX 6000 Ada has 48 GB of GDDR6 memory. The B300’s memory bus is 8192-bit, compared to the RTX 6000’s 384-bit bus.

Q: Are these GPUs from the same architecture generation?

A: No. The B300 is based on the Blackwell Ultra architecture (chip GB110), while the RTX 6000 Ada uses the Ada Lovelace architecture (chip AD102). They are also from different generations: the B300 is from “Server Blackwell (Bxx),” and the RTX 6000 is from “Workstation Ada.”

Q: What is the production status of each card?

A: The B300 SXM6 AC is listed as “Active” in production, with a release date of September 2025. The RTX 6000 Ada is marked “End-of-life,” having been released in December 2022.

Architecture Differences

The two GPUs diverge fundamentally at the silicon level. The B300 uses the GB110 chip built on a 5 nm process at TSMC, packing 208,000 million transistors onto a 1628 mm² die. In contrast, the RTX 6000 Ada uses the AD102 chip, also on a 5 nm TSMC process, but with only 76,300 million transistors on a 609 mm² die. This transistor density difference is minor (127.8M/mm² for B300 vs 125.3M/mm² for RTX 6000), but the raw transistor count gives the B300 a massive physical advantage.

Memory architecture further separates them. The B300 employs 288 GB of HBM3e with an 8192-bit bus, delivering 8.19 TB/s of bandwidth. The RTX 6000 Ada uses 48 GB of GDDR6 on a 384-bit bus, yielding 960.0 GB/s. That is a 8.5x bandwidth advantage for the B300, which is critical for memory-bound compute tasks.

Clock behavior also differs starkly. The B300 runs at a base clock of 1665 MHz and boosts to 2032 MHz. The RTX 6000 Ada has a much lower base clock of 915 MHz but a higher boost of 2505 MHz. This suggests the RTX 6000 relies on aggressive boost behavior in workstation workloads, while the B300 maintains higher sustained clocks across all cores.

Feature support shows the generational gap: the RTX 6000 Ada includes 142 RT cores and full API support (DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4), while the B300 lists no RT cores and has API support marked as N/A. The B300 is clearly optimized for compute, not graphics rasterization, as evidenced by its lack of display outputs.

Head-to-Head Benchmarks

The single available head-to-head benchmark is GeekBench OpenCL. Here, the B300 SXM6 AC scores 369,831 against the RTX 6000 Ada’s 311,629, a delta of 18.7% in favor of the B300. This is the only direct comparison in the data, and it shows a substantial lead for the server chip.

Contextualizing this score with nearest rivals adds depth. The B300’s 369,831 is 10.4% above the NVIDIA H200 NVL (334,891) and 16.3% above the AMD Instinct MI300X (317,994). It also beats the NVIDIA L40S (295,763) by 25%. This places the B300 at the absolute top of the performance hierarchy, with a 100th percentile ranking.

The RTX 6000 Ada, meanwhile, sits in a different tier. Its 311,629 OpenCL score is only 1.1% above the NVIDIA L40 (284,111) but 9.7% below the AMD Instinct MI300X (317,994). It also trails the L40S by 2.9%. Despite these mixed results, the RTX 6000 holds a 14.4% lead over the NVIDIA L20 (251,147), and its 99th percentile ranking shows it is still an elite workstation part.

The data implies that the B300 is in a class of its own for raw compute, while the RTX 6000 Ada competes closely with other high-end workstation accelerators. The 18.7% gap between the two is significant but not overwhelming, given the B300’s far larger memory footprint and power envelope.

The Verdict

The data points to a clear split: the B300 SXM6 AC is designed for maximum compute throughput in server environments, while the RTX 6000 Ada is a legacy workstation product with strong but not dominant performance. The B300 wins the only direct benchmark by 18.7%, has 6x the memory capacity, and holds the 100th percentile ranking. It is the definitive choice for organizations prioritizing raw OpenCL compute and massive memory bandwidth, as seen in its 8.19 TB/s versus 960.0 GB/s.

However, the RTX 6000 Ada is not without merit. It offers 91.06 TFLOPS FP32 performance, which is higher than the B300’s 76.99 TFLOPS. It also has a higher pixel rate (481.0 GPixel/s vs 48.77 GPixel/s) and a higher texture rate (1,422.8 GTexel/s vs 1,202.9 GTexel/s). In graphics-oriented tasks, the RTX 6000 Ada is the better performer, despite losing the compute benchmark.

The RTX 6000 Ada also supports display outputs (4x DisplayPort 1.4a) and full graphics APIs, making it a functional workstation GPU. The B300 has no display outputs and no API support, confirming it is purely a compute accelerator. For users needing a physical graphics card with rendering capabilities, the RTX 6000 Ada is the only option between the two.

Specification Differences

| Specification | NVIDIA B300 SXM6 AC | NVIDIA RTX 6000 Ada Generation |

|---|---|---|

| Chip | GB110 | AD102 |

| Architecture | Blackwell Ultra | Ada Lovelace |

| Generation | Server Blackwell (Bxx) | Workstation Ada |

| Transistors | 208,000 million | 76,300 million |

| Die Size | 1628 mm² | 609 mm² |

| Transistor Density | 127.8M / mm² | 125.3M / mm² |

| Base Clock | 1665 MHz | 915 MHz |

| Boost Clock | 2032 MHz | 2505 MHz |

| Memory Clock | 2000 MHz (8 Gbps effective) | 2500 MHz (20 Gbps effective) |

| Memory Size | 288 GB | 48 GB |

| Memory Type | HBM3e | GDDR6 |

| Memory Bus | 8192 bit | 384 bit |

| Memory Bandwidth | 8.19 TB/s | 960.0 GB/s |

| Shading Units | 18944 | 18176 |

| TMUs | 592 | 568 |

| ROPs | 24 | 192 |

| RT Cores | N/A | 142 |

| Tensor Cores | 592 | 568 |

| Pixel Rate | 48.77 GPixel/s | 481.0 GPixel/s |

| Texture Rate | 1,202.9 GTexel/s | 1,422.8 GTexel/s |

| FP32 | 76.99 TFLOPS | 91.06 TFLOPS |

| FP16 | 76.99 TFLOPS (1:1) | 91.06 TFLOPS (1:1) |

| TDP | 1100 W | 300 W |

| Slot Width | SXM Module | Dual-slot |

| Power Connectors | N/A | 1x 16-pin |

| Suggested PSU | 1500 W | 700 W |

| Bus Interface | PCIe 6.0 x16 | PCIe 4.0 x16 |

| Display Outputs | No outputs | 4x DisplayPort 1.4a |

| APIs | DirectX: N/A, OpenGL: N/A, Vulkan: N/A | DirectX: 12 Ultimate, OpenGL: 4.6, Vulkan: 1.4 |

| Dimensions | N/A | 267 mm length, 112 mm height |

| Production Status | Active | End-of-life |

| Release Date | 2025-09-10 | 2022-12-02 |

| Predecessor | Server Hopper | Workstation Ampere |

| Successor | Server Rubin | Blackwell PRO W |

Where Each One Wins

The B300 SXM6 AC wins decisively in compute-heavy server workloads. Its 288 GB HBM3e memory and 8.19 TB/s bandwidth make it suitable for large language models and data-intensive AI training. The 18.7% OpenCL lead over the RTX 6000 Ada, coupled with a 100th percentile ranking, confirms its dominance in generic compute benchmarks. It also beats all listed rivals—B200, H200 NVL, MI300X, and L40S—by margins from 7% to 25%.

The RTX 6000 Ada wins in graphics and workstation tasks. Its 91.06 TFLOPS FP32 output exceeds the B300’s 76.99 TFLOPS, and its 481.0 GPixel/s pixel rate is nearly 10x higher than the B300’s 48.77 GPixel/s. It also has a higher texture rate (1,422.8 GTexel/s vs 1,202.9 GTexel/s). The presence of 142 RT cores, display outputs, and full DirectX/Vulkan/OpenGL support makes it a functional graphics card, whereas the B300 lacks these entirely.

The power draw difference is stark: 1100 W for the B300 versus 300 W for the RTX 6000 Ada. The B300 requires a 1500 W PSU suggestion, while the RTX 6000 needs only 700 W. This makes the RTX 6000 Ada far more practical for desktop or small-form-factor workstations, while the B300 is clearly a data-center module.

In terms of longevity, the B300 is still active and newer (2025 release), while the RTX 6000 Ada is end-of-life (2022 release). Users needing long-term support will favor the B300, but those on legacy systems may find the RTX 6000’s PCIe 4.0 interface more compatible with older servers. The data ultimately shows two different tools for two different jobs, with the B300 leading in raw compute and the RTX 6000 Ada leading in graphics capability and efficiency.