NVIDIA H800 SXM5 vs Lisuan Tech LX MAX Comparison

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the NVIDIA H800 SXM5 and the Lisuan Tech LX MAX. Both products have an empty benchmark array, an average benchmark score of zero, and no recorded nearest rivals. This absence of measured data means a direct performance comparison cannot be established through empirical testing. Instead, the analysis must rely on the architectural specifications and theoretical peak rates recorded in the database.

The NVIDIA H800 SXM5 delivers 59.30 TFLOPS of FP32 compute, while the Lisuan Tech LX MAX reaches 24.58 TFLOPS. This places the H800 at roughly 2.4 times the FP32 throughput of the LX MAX. In FP16, the disparity widens: the H800 reaches 237.2 TFLOPS (4:1 ratio), while the LX MAX achieves 49.15 TFLOPS (2:1 ratio). The H800 therefore provides approximately 4.8 times the FP16 throughput. These numbers represent theoretical peak rates, not measured application performance, but they indicate a substantial compute advantage for the H800 in raw arithmetic throughput.

Memory bandwidth shows a similar pattern. The H800 SXM5 uses 80 GB of HBM3 across a 5120-bit bus, yielding 3.36 TB/s. The LX MAX uses 12 GB of GDDR6 across a 192-bit bus, yielding 432.0 GB/s. The H800 provides roughly 7.8 times the memory bandwidth of the LX MAX. The H800 also holds 6.7 times the memory capacity, which matters for large model residency.

Texture and pixel rates tell a more nuanced story. The H800 achieves 926.6 GTexel/s and 42.12 GPixel/s, while the LX MAX achieves 384.0 GTexel/s and 192.0 GPixel/s. The H800 leads texture fill by a factor of 2.4, but the LX MAX leads pixel fill by a factor of 4.6. This inversion suggests the LX MAX has a higher ratio of ROPs to shading units, with 96 ROPs versus 24 on the H800, which may benefit certain rasterization workloads.

Neither product shows any recorded benchmark wins in the database. The winsA and winsB fields are both zero, and the headToHeadBenchmarks array is empty. The percentileVsAllGpus field for both is 50, placing each at the median of all GPUs in the database, though this percentile appears to be a default value given the absence of benchmark scores.

FAQ

Q: Which product has higher FP32 compute throughput?

A: The NVIDIA H800 SXM5 delivers 59.30 TFLOPS of FP32, while the Lisuan Tech LX MAX delivers 24.58 TFLOPS. The H800 provides approximately 2.4 times the FP32 throughput.

Q: How does memory capacity compare between the two?

A: The H800 SXM5 has 80 GB of HBM3 memory, while the LX MAX has 12 GB of GDDR6. The H800 holds 6.7 times the memory capacity.

Q: Which product has higher memory bandwidth?

A: The H800 SXM5 reaches 3.36 TB/s over a 5120-bit bus, while the LX MAX reaches 432.0 GB/s over a 192-bit bus. The H800 provides approximately 7.8 times the bandwidth.

Q: Does the LX MAX outperform the H800 in any recorded metric?

A: Yes, in pixel fill rate. The LX MAX achieves 192.0 GPixel/s with 96 ROPs, while the H800 achieves 42.12 GPixel/s with 24 ROPs. The LX MAX delivers 4.6 times the pixel throughput.

Q: What are the power consumption figures for each?

A: The H800 SXM5 has a TDP of 700 W with a suggested PSU of 1100 W. The LX MAX has a TDP of 225 W with a suggested PSU of 550 W.

Q: What is the form factor difference?

A: The H800 SXM5 is an SXM module using an 8-pin EPS power connector, while the LX MAX is a dual-slot card with a 1x 16-pin power connector and dimensions of 248 mm by 118 mm by 48 mm.

The Verdict

The data indicates a clear split by workload type. The NVIDIA H800 SXM5 is the stronger choice for compute-intensive tasks that demand large memory capacity, high bandwidth, and extreme FP16 throughput. Its 80 GB HBM3 pool and 3.36 TB/s bandwidth support large data residency, and its 237.2 TFLOPS FP16 rate positions it for mixed-precision workloads.

The Lisuan Tech LX MAX is the stronger choice for rasterization-oriented tasks that benefit from high pixel throughput and lower power draw. Its 192.0 GPixel/s pixel rate and 96 ROPs exceed the H800 in that specific metric, and its 225 W TDP requires far less power infrastructure.

Users who need massive memory and bandwidth should select the H800 SXM5. Users who need pixel throughput and a dual-slot PCIe form factor should select the LX MAX. The H800 uses PCIe 5.0 x16 while the LX MAX uses PCIe 4.0 x16, which may affect data transfer rates in CPU-bound scenarios. The LX MAX also provides display outputs (4x DisplayPort 1.4a), while the H800 has no display outputs.

Specification Differences

The two products differ across nearly every recorded specification. The H800 SXM5 has a base clock of 1095 MHz and a boost clock of 1755 MHz, while the LX MAX has no recorded base or boost clocks. Memory clocks differ: the H800 runs at 1313 MHz with 5.3 Gbps effective, while the LX MAX runs at 2250 MHz with 18 Gbps effective.

Shading units differ significantly: the H800 has 16896, the LX MAX has 6144. TMUs: 528 versus 192. ROPs: 24 versus 96. Tensor cores: the H800 has 528, the LX MAX has none recorded. The H800 has no RT cores recorded, and neither does the LX MAX.

Memory specifications differ completely: HBM3 80 GB versus GDDR6 12 GB, 5120-bit versus 192-bit bus, 3.36 TB/s versus 432.0 GB/s bandwidth. Power: 700 W TDP versus 225 W TDP, 1100 W versus 550 W suggested PSU, 8-pin EPS versus 1x 16-pin connector.

Form factor: SXM module versus dual-slot card. The LX MAX has recorded dimensions of 248 mm by 118 mm by 48 mm; the H800 has no recorded dimensions. Bus interface: PCIe 5.0 x16 versus PCIe 4.0 x16. Display outputs: none versus 4x DisplayPort 1.4a. API support: the H800 has no recorded DirectX, OpenGL, or Vulkan versions; the LX MAX supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.3.

Architecture Differences

The H800 SXM5 uses the GH100 chip on the Hopper architecture, fabricated on a 5 nm process at TSMC. It contains 80,000 million transistors on an 814 mm² die, yielding a transistor density of 98.3M per mm². Its generation is listed as Server Hopper (Hxx). The LX MAX uses the 7G106 chip on the TrueGPU architecture, fabricated on a 6 nm process at TSMC. Its transistor count, die size, and transistor density are unknown. Its generation is listed as 7G100.

The H800 belongs to the Server Hopper generation with a release date of 2023-03-20. Its predecessor is listed as Server Ada and its successor as Server Blackwell. The LX MAX has a release date of 2026-03-16, with no predecessor or successor recorded. The H800 is marked as Active production, as is the LX MAX.

The H800's FP16 ratio is 4:1, meaning its FP16 throughput is four times its FP32 throughput. The LX MAX's FP16 ratio is 2:1, meaning its FP16 throughput is twice its FP32 throughput. This architectural choice reflects different design priorities: the H800 emphasizes tensor-heavy mixed-precision compute, while the LX MAX maintains a more balanced FP32-to-FP16 ratio.

The H800 integrates 528 tensor cores, while the LX MAX has none recorded. Neither product lists RT cores. The H800 has no recorded API support, suggesting a compute-only design, while the LX MAX records full DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.3 support, indicating a graphics-capable design.

Where Each One Wins

The H800 SXM5 wins in FP32 compute, delivering 59.30 TFLOPS versus 24.58 TFLOPS. It wins in FP16 compute, delivering 237.2 TFLOPS versus 49.15 TFLOPS. It wins in texture rate, delivering 926.6 GTexel/s versus 384.0 GTexel/s. It wins decisively in memory capacity and bandwidth: 80 GB versus 12 GB, and 3.36 TB/s versus 432.0 GB/s. It also wins in shading units (16896 versus 6144), TMUs (528 versus 192), and tensor cores (528 versus none).

The LX MAX wins in pixel rate, delivering 192.0 GPixel/s versus 42.12 GPixel/s. It wins in ROP count (96 versus 24). It wins in power efficiency per the recorded TDP, drawing 225 W versus 700 W. It wins in form factor flexibility as a dual-slot card with display outputs, versus the H800's SXM module with no outputs. It also wins in API compatibility, supporting DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.3, while the H800 records no API support.

The use-case split is therefore clear. The H800 SXM5 serves compute environments that require massive memory pools, high bandwidth, and extreme FP16 throughput, such as large-scale model training or inference with large batch sizes. The LX MAX serves graphics and rasterization workloads that need high pixel throughput, display connectivity, and moderate power consumption. The LX MAX also suits systems with PCIe 4.0 infrastructure, while the H800 requires PCIe 5.0 and an SXM-capable chassis.

The LX MAX's 18 Gbps effective memory clock exceeds the H800's 5.3 Gbps effective clock, but the H800's much wider 5120-bit bus compensates with far higher total bandwidth. The LX MAX's 2250 MHz memory clock versus the H800's 1313 MHz reflects different memory technologies: GDDR6 runs at higher clocks, while HBM3 runs at lower clocks with wider buses.

Both products sit at the 50th percentile in the database with zero benchmark scores, meaning no empirical performance ranking exists. The recorded specifications provide the only basis for comparison. Users should interpret the theoretical rates as upper bounds, not guaranteed application performance.