NVIDIA H20 vs Lisuan Tech LX MAX Comparison

Where Each One Wins

The NVIDIA H20 and the Lisuan Tech LX MAX occupy different positions in the recorded performance data, with each delivering advantages in specific workload categories. The H20, built on the Hopper architecture with the GH100 chip, is designed around massive memory capacity and high-bandwidth compute. The LX MAX, using the TrueGPU architecture with the 7G106 chip, focuses on high pixel throughput and a conventional graphics feature set.

The H20 wins decisively in memory capacity and bandwidth. It ships with 96 GB of HBM3 memory on a 6144-bit bus, delivering 4.03 TB/s of bandwidth. The LX MAX offers 12 GB of GDDR6 memory on a 192-bit bus, yielding 432.0 GB/s. This represents a 9.3x advantage in raw bandwidth for the H20 (4.03 TB/s versus 432.0 GB/s), and an 8x advantage in capacity. For workloads that load large models or datasets into memory, the H20 provides substantially more headroom.

Compute throughput also favors the H20 in raw FP32 and FP16 terms. The H20 records 39.54 TFLOPS FP32 and 79.07 TFLOPS FP16 (2:1). The LX MAX records 24.58 TFLOPS FP32 and 49.15 TFLOPS FP16 (2:1). The H20 leads by roughly 1.6x in both precision formats. However, the LX MAX counters with a much higher pixel rate: 192.0 GPixel/s versus 47.52 GPixel/s for the H20. This is a 4.0x advantage in pixel fill rate, which matters for rasterization-bound rendering tasks.

Texture rate tells a more nuanced story. The H20 posts 617.8 GTexel/s, while the LX MAX posts 384.0 GTexel/s. The H20 leads by 1.6x, consistent with its FP32 lead. The LX MAX has 96 ROPs versus the H20's 24 ROPs, which explains the pixel rate disparity despite the H20's higher texture throughput.

The LX MAX also wins on API support. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.3. The H20 reports N/A for DirectX, OpenGL, and Vulkan, indicating no graphics API support. The LX MAX includes 4x DisplayPort 1.4a outputs, while the H20 has no display outputs. This makes the LX MAX the only option for direct display attachment or graphics-centric software stacks.

Power characteristics differ substantially. The H20 has a 500 W TDP and requires a 900 W suggested PSU. The LX MAX has a 225 W TDP and requires a 550 W suggested PSU. The LX MAX consumes 55% less power (225 W versus 500 W), which may factor into deployment density and thermal management. The H20 uses an SXM Module form factor, while the LX MAX is a dual-slot card with a 16-pin power connector.

The Verdict

The recorded data points to clear separation by use case. The NVIDIA H20 is the choice for compute-heavy, memory-hungry workloads such as large-scale inference, scientific computing, or any process that benefits from 96 GB of HBM3 and 4.03 TB/s of bandwidth. Its FP32 and FP16 throughput of 39.54 TFLOPS and 79.07 TFLOPS respectively outpaces the LX MAX by 1.6x in both metrics. The H20 also leads in texture rate with 617.8 GTexel/s.

The Lisuan Tech LX MAX is the choice for graphics-oriented tasks and direct rendering workloads. Its 192.0 GPixel/s pixel rate is 4.0x higher than the H20's 47.52 GPixel/s. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.3, which the H20 lacks entirely. The LX MAX also provides four DisplayPort 1.4a outputs, enabling direct display connection. Its 12 GB GDDR6 memory and 432.0 GB/s bandwidth are sufficient for real-time rendering at typical resolutions, while its 225 W TDP requires less power infrastructure.

Neither product dominates the other across all categories. The H20 wins on memory capacity, memory bandwidth, FP32, FP16, texture rate, and transistor count (80,000 million versus an unknown figure for the LX MAX). The LX MAX wins on pixel rate, ROP count, API compatibility, display outputs, power efficiency, and physical form factor flexibility. The LX MAX also uses a 6 nm process node versus the H20's 5 nm node, and it has a later release date of 2026-03-16 versus 2024-01-31.

The percentile ranking for both is 50, meaning neither sits above or below the median in the database's aggregate benchmark distribution. However, the database records no benchmark scores or head-to-head results for either product, so the percentile is a neutral placeholder rather than a performance verdict.

Head-to-Head Benchmarks

Direct benchmark comparisons between the two are absent from the database, so the analysis relies on the recorded specification-level metrics. The largest single-category win for the H20 is memory bandwidth. At 4.03 TB/s versus 432.0 GB/s, the H20 delivers 9.3x the bandwidth. This is the most extreme margin in the comparison. For memory-bound operations such as large matrix multiplications or transformer inference, this gap dominates all other factors.

The second-largest H20 win is memory capacity at 96 GB versus 12 GB, an 8x difference. Combined with the bandwidth advantage, the H20 can hold model weights and activations far beyond the LX MAX's reach. The LX MAX's 12 GB capacity aligns with mid-range graphics workloads, not large-scale compute.

In compute throughput, the H20 leads by 1.6x in both FP32 (39.54 versus 24.58 TFLOPS) and FP16 (79.07 versus 49.15 TFLOPS). While significant, this margin is smaller than the memory gap. Texture rate follows the same pattern: 617.8 GTexel/s versus 384.0 GTexel/s, also a 1.6x lead.

The LX MAX's largest win is pixel rate. At 192.0 GPixel/s versus 47.52 GPixel/s, the LX MAX leads by 4.0x. This stems from its 96 ROPs versus 24 ROPs. For any workload that writes heavily to framebuffers, such as high-resolution rendering or post-processing passes, the LX MAX has a clear advantage.

The LX MAX also wins on power efficiency in a relative sense. Its 225 W TDP is 45% of the H20's 500 W TDP. Normalizing FP32 throughput per watt, the LX MAX delivers 0.109 TFLOPS/W (24.58 divided by 225), while the H20 delivers 0.079 TFLOPS/W (39.54 divided by 500). The LX MAX is roughly 1.4x more efficient in raw FP32 per watt. However, this calculation ignores memory bandwidth per watt, where the H20's 4.03 TB/s divided by 500 W yields 8.06 GB/s per watt, versus 1.92 GB/s per watt for the LX MAX (432.0 GB/s divided by 225 W). The H20 leads by 4.2x in bandwidth per watt.

The LX MAX wins on interface compatibility for graphics. It supports PCIe 4.0 x16, while the H20 uses PCIe 5.0 x16. The H20's newer interface offers higher theoretical transfer rates, but the LX MAX's support for standard graphics APIs and display outputs makes it the practical choice for interactive workloads.

FAQ

Q: Which GPU has more memory bandwidth?

A: The NVIDIA H20 has 4.03 TB/s of bandwidth from 96 GB of HBM3 on a 6144-bit bus. The Lisuan Tech LX MAX has 432.0 GB/s from 12 GB of GDDR6 on a 192-bit bus. The H20 leads by 9.3x.

Q: Which GPU supports DirectX and Vulkan?

A: The Lisuan Tech LX MAX supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.3. The NVIDIA H20 reports N/A for DirectX, OpenGL, and Vulkan, meaning it has no graphics API support in the recorded data.

Q: Which GPU has a higher pixel fill rate?

A: The Lisuan Tech LX MAX has a pixel rate of 192.0 GPixel/s, which is 4.0x higher than the NVIDIA H20's 47.52 GPixel/s. This is driven by the LX MAX's 96 ROPs versus 24 ROPs on the H20.

Q: What is the power consumption difference?

A: The NVIDIA H20 has a 500 W TDP and a 900 W suggested PSU. The Lisuan Tech LX MAX has a 225 W TDP and a 550 W suggested PSU. The LX MAX consumes 275 W less.

Q: Which GPU has more shading units and tensor cores?

A: The NVIDIA H20 has 9984 shading units and 312 tensor cores. The Lisuan Tech LX MAX has 6144 shading units and no tensor cores listed. The H20 also has 312 TMUs versus 192 TMUs on the LX MAX.

Q: What are the form factor differences?

A: The NVIDIA H20 is an SXM Module with no display outputs and no power connector listed. The Lisuan Tech LX MAX is a dual-slot card measuring 248 mm by 118 mm by 48 mm, uses a single 16-pin power connector, and provides 4x DisplayPort 1.4a outputs.

Architecture Differences

The NVIDIA H20 uses the GH100 chip on a 5 nm process at TSMC, with 80,000 million transistors on an 814 mm² die. This yields a transistor density of 98.3 million per mm². The architecture is Hopper, part of the Server Hopper (Hxx) generation. The Lisuan Tech LX MAX uses the 7G106 chip on a 6 nm process, also at TSMC, but the transistor count and die size are not recorded. The architecture is TrueGPU, part of the 7G100 generation.

The H20's compute configuration includes 9984 shading units, 312 TMUs, 24 ROPs, and 312 tensor cores. The LX MAX has 6144 shading units, 192 TMUs, and 96 ROPs, with no tensor cores recorded. The H20's tensor core count (312) indicates a design optimized for matrix operations, while the LX MAX's higher ROP count (96) indicates a design optimized for pixel output.

Clocks differ in structure. The H20 has a base clock of 1830 MHz and a boost clock of 1980 MHz, with memory at 1313 MHz (5.3 Gbps effective). The LX MAX has no base or boost clock recorded, but its memory runs at 2250 MHz (18 Gbps effective). The LX MAX's memory clock is 1.7x higher in effective terms, but the H20's wider bus (6144-bit versus 192-bit) compensates with far greater total bandwidth.

The H20 uses HBM3 memory, while the LX MAX uses GDDR6. This is a fundamental architectural split: HBM3 prioritizes bandwidth density and capacity, while GDDR6 prioritizes cost and simplicity. The H20's 96 GB capacity and 4.03 TB/s bandwidth align with server-class compute. The LX MAX's 12 GB capacity and 432.0 GB/s bandwidth align with client-class graphics.

The H20 belongs to the Server Hopper generation with a predecessor of Server Ada and a successor of Server Blackwell. The LX MAX has no predecessor or successor listed. The H20 was released on 2024-01-31, while the LX MAX was released on 2026-03-16. Both are marked as Active in production status.

The H20 uses PCIe 5.0 x16, while the LX MAX uses PCIe 4.0 x16. The H20 has no display outputs, while the LX MAX has 4x DisplayPort 1.4a. The H20 is an SXM Module, while the LX MAX is a dual-slot card with a 16-pin connector. The H20's API support is entirely absent (N/A for DirectX, OpenGL, Vulkan), while the LX MAX supports the full modern graphics stack including DirectX 12 Ultimate. These differences confirm that the H20 is a compute-only accelerator, while the LX MAX is a full graphics card.