NVIDIA B300 SXM6 AC vs Lisuan Tech LX ULTRA Comparison

Head-to-Head Benchmarks

The benchmark database records only one measurement for the NVIDIA B300 SXM6 AC, while the Lisuan Tech LX ULTRA has no recorded benchmark scores. The NVIDIA B300 SXM6 AC delivers an OpenCL score of 369,831, placing it at the 100th percentile of all GPUs in the database. The Lisuan Tech LX ULTRA sits at the 50th percentile with no benchmark data available, making direct numerical comparison impossible.

The NVIDIA B300 SXM6 AC outperforms its nearest recorded rivals by clear margins. It is 7% ahead of the NVIDIA B200, which scores 345,482. It leads the NVIDIA H200 NVL by 10.4%, as that card records 334,891 points. Against the AMD Instinct MI300X, the B300 SXM6 AC holds a 16.3% advantage, with the AMD part scoring 317,994. The largest gap in this group is against the NVIDIA L40S, which scores 295,763, putting the B300 SXM6 AC 25% ahead.

The Lisuan Tech LX ULTRA offers no benchmark results in the database, so its performance cannot be quantified against any rival. The data shows the LX ULTRA has an average benchmark score of zero, which reflects missing measurements rather than actual performance. Without recorded scores, the database cannot confirm how it compares to the B300 SXM6 AC or any other GPU.

Where Each One Wins

The NVIDIA B300 SXM6 AC wins decisively in compute-heavy workloads based on the recorded data. Its FP32 throughput reaches 76.99 TFLOPS, which is more than three times the 24.58 TFLOPS of the Lisuan Tech LX ULTRA. For FP16 workloads, the B300 SXM6 AC delivers 76.99 TFLOPS in a 1:1 ratio, while the LX ULTRA reaches 49.15 TFLOPS in a 2:1 ratio. The B300 SXM6 AC also carries 592 tensor cores, a feature absent from the LX ULTRA entirely, making it suited for AI inference and training tasks.

Memory capacity and bandwidth favor the NVIDIA part overwhelmingly. The B300 SXM6 AC uses 288 GB of HBM3e memory on an 8192-bit bus, achieving 8.19 TB/s of bandwidth. The LX ULTRA has 24 GB of GDDR6 memory on a 192-bit bus, delivering 432.0 GB/s. That is roughly 19 times less bandwidth, which limits the LX ULTRA in large dataset operations.

The Lisuan Tech LX ULTRA wins in areas relevant to conventional graphics output. It has 96 ROPs, which drive a pixel rate of 192.0 GPixel/s, compared to the B300 SXM6 AC's 24 ROPs and 48.77 GPixel/s. The LX ULTRA supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.3, while the B300 SXM6 AC reports no API support. The LX ULTRA also provides four DisplayPort 1.4a outputs, whereas the B300 SXM6 AC has no display outputs. The LX ULTRA uses a dual-slot form factor with a 225 W TDP and a 550 W suggested PSU, making it deployable in standard workstations. The B300 SXM6 AC requires an SXM module slot and a 1500 W suggested PSU, which restricts it to specialized server chassis.

Architecture Differences

The NVIDIA B300 SXM6 AC uses the GB110 chip built on a 5 nm process at TSMC, with the Blackwell Ultra architecture. It belongs to the Server Blackwell (Bxx) generation. The chip contains 208,000 million transistors on a 1628 mm² die, yielding a transistor density of 127.8 million per mm². The Lisuan Tech LX ULTRA uses the 7G105 chip on a 6 nm process, also at TSMC, under the TrueGPU architecture from the 7G100 generation. Its transistor count and die size are listed as unknown in the database.

The B300 SXM6 AC has 18,944 shading units, 592 TMUs, and 24 ROPs. The LX ULTRA has 6,144 shading units, 192 TMUs, and 96 ROPs. The B300 SXM6 AC integrates 592 tensor cores, a feature that the LX ULTRA lacks entirely. The B300 SXM6 AC runs at a base clock of 1665 MHz and a boost clock of 2032 MHz. The LX ULTRA has no base or boost clock recorded. Memory clocks differ as well: the B300 SXM6 AC runs memory at 2000 MHz with 8 Gbps effective speed, while the LX ULTRA runs memory at 2250 MHz with 18 Gbps effective speed.

The B300 SXM6 AC uses PCIe 6.0 x16 for its bus interface, while the LX ULTRA uses PCIe 4.0 x16. The B300 SXM6 AC has no display outputs, no power connectors listed, and no API support. The LX ULTRA has four DisplayPort 1.4a outputs, one 16-pin power connector, and full support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.3. The B300 SXM6 AC is an SXM module, while the LX ULTRA is a dual-slot card measuring 268 mm in length, 112 mm in height, and 40 mm in width.

The B300 SXM6 AC was released on September 10, 2025, with the LX ULTRA following on March 16, 2026. The B300 SXM6 AC lists its predecessor as Server Hopper and its successor as Server Rubin. The LX ULTRA has no predecessor or successor recorded. Both parts are currently marked as active in production.

FAQ

Q: How much faster is the NVIDIA B300 SXM6 AC than the AMD Instinct MI300X?

A: The B300 SXM6 AC scores 369,831 in OpenCL, which is 16.3% ahead of the MI300X's 317,994.

Q: Does the Lisuan Tech LX ULTRA support ray tracing?

A: The database records no RT core count for the LX ULTRA, and its shading units, TMUs, and ROPs are listed without any ray tracing acceleration details.

Q: What memory type does each GPU use?

A: The NVIDIA B300 SXM6 AC uses 288 GB of HBM3e on an 8192-bit bus with 8.19 TB/s bandwidth. The Lisuan Tech LX ULTRA uses 24 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth.

Q: Which GPU has higher FP32 compute?

A: The B300 SXM6 AC delivers 76.99 TFLOPS of FP32, while the LX ULTRA delivers 24.58 TFLOPS.

Q: Can the LX ULTRA be used for display output?

A: Yes, the LX ULTRA has four DisplayPort 1.4a outputs. The B300 SXM6 AC has no display outputs.

Q: What is the power requirement difference?

A: The B300 SXM6 AC has a 1100 W TDP and a 1500 W suggested PSU. The LX ULTRA has a 225 W TDP and a 550 W suggested PSU.

Specification Differences

The two GPUs differ across nearly every recorded specification. The B300 SXM6 AC uses a 5 nm process, while the LX ULTRA uses 6 nm. The B300 SXM6 AC has 208,000 million transistors on a 1628 mm² die; the LX ULTRA has no recorded transistor count or die size. The B300 SXM6 AC has 18,944 shading units versus 6,144 on the LX ULTRA. TMUs count 592 versus 192, and ROPs count 24 versus 96.

Clock speeds differ: the B300 SXM6 AC has a base clock of 1665 MHz and boost of 2032 MHz, while the LX ULTRA has no base or boost clock recorded. Memory speed differs as well: 2000 MHz with 8 Gbps effective on the B300 SXM6 AC, versus 2250 MHz with 18 Gbps effective on the LX ULTRA. Memory capacity is 288 GB versus 24 GB, bus width is 8192 bit versus 192 bit, and bandwidth is 8.19 TB/s versus 432.0 GB/s.

Pixel rate favors the LX ULTRA at 192.0 GPixel/s versus 48.77 GPixel/s. Texture rate favors the B300 SXM6 AC at 1,202.9 GTexel/s versus 384.0 GTexel/s. FP32 is 76.99 TFLOPS versus 24.58 TFLOPS. FP16 is 76.99 TFLOPS (1:1) versus 49.15 TFLOPS (2:1). The B300 SXM6 AC has 592 tensor cores; the LX ULTRA has none.

Power figures show a 1100 W TDP for the B300 SXM6 AC versus 225 W for the LX ULTRA. Suggested PSU is 1500 W versus 550 W. The B300 SXM6 AC is an SXM module; the LX ULTRA is dual-slot. The B300 SXM6 AC uses PCIe 6.0 x16; the LX ULTRA uses PCIe 4.0 x16. The B300 SXM6 AC has no display outputs, while the LX ULTRA has four DisplayPort 1.4a connectors. The B300 SXM6 AC has no API support; the LX ULTRA supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.3.

The Verdict

The data points to two very different products serving different roles. The NVIDIA B300 SXM6 AC is a server compute accelerator with massive memory capacity, extreme bandwidth, and tensor core support. Its 100th percentile rank and 369,831 OpenCL score place it above every recorded rival, including the B200, H200 NVL, MI300X, and L40S. It is the right choice for large-scale AI workloads, high-bandwidth data processing, and any task that needs the 288 GB HBM3e pool.

The Lisuan Tech LX ULTRA is a conventional dual-slot graphics card with display outputs, full graphics API support, and a modest 225 W power draw. Its 24 GB GDDR6 memory and 432.0 GB/s bandwidth are typical for workstation-class rendering, and its 192.0 GPixel/s pixel rate indicates strong rasterization throughput. It fits systems that require standard PCIe 4.0 installation, display connectivity, and direct graphics rendering.

There is no benchmark data for the LX ULTRA, so its performance relative to the B300 SXM6 AC remains unmeasured. What the database confirms is that the B300 SXM6 AC leads in raw compute, memory bandwidth, and AI acceleration features. The LX ULTRA leads in display output, API compatibility, and power efficiency. A builder choosing between them should base the decision on workload type: server-side compute favors the B300 SXM6 AC, while client-side graphics work favors the LX ULTRA.