AMD Instinct MI300X vs Lisuan Tech LX ULTRA Comparison

Head-to-Head Benchmarks

The recorded data shows a stark contrast in measured performance between these two accelerators, though the comparison is limited by the absence of shared benchmark results. The AMD Instinct MI300X has a Geekbench OpenCL score of 317,994, placing it in the 100th percentile against all GPUs in the database. The Lisuan Tech LX ULTRA currently has no recorded benchmark scores, giving it a 50th percentile ranking based on its specifications alone.

Against its nearest rivals, the MI300X trails the NVIDIA B200 by 8 percent, as the B200 averages 345,482 points. It sits 5 percent behind the NVIDIA H200 NVL, which averages 334,891 points. However, the MI300X moves ahead of the NVIDIA L40S by 7.5 percent, with the L40S averaging 295,763 points. The margin grows further against the NVIDIA RTX 6000 Ada Generation, where the MI300X holds a 10.7 percent advantage, as that card averages 287,237 points.

The LX ULTRA has no comparable scores in the database, so no direct delta can be calculated against the MI300X or any other accelerator. What the data does show is that the MI300X delivers a substantial openCL score that ranks it at the very top of the database distribution. The LX ULTRA, by contrast, has no measured data to place it on the same scale, and its 50th percentile standing is derived from hardware attributes rather than empirical results.

The MI300X's average benchmark score is 317,994, which reflects its single recorded test. The LX ULTRA's average score is zero, reflecting the absence of any benchmark entries. This means any head-to-head comparison relies entirely on the architectural and specification differences between the two parts, rather than direct performance measurements.

Architecture Differences

The two accelerators come from fundamentally different design lineages. The AMD Instinct MI300X uses the Aqua Vanjaram chip built on CDNA 3.0 architecture, manufactured on a 5 nm process at TSMC. It packs 153,000 million transistors into a 1017 mm² die, yielding a transistor density of 150.4 million per mm². The Lisuan Tech LX ULTRA uses the 7G105 chip with TrueGPU architecture, built on a 6 nm process also at TSMC. Its transistor count and die size are not recorded in the database, and no density figure is available.

Memory configurations diverge sharply. The MI300X carries 192 GB of HBM3 memory across an 8192 bit bus, producing 5.32 TB/s of bandwidth. The LX ULTRA has 24 GB of GDDR6 memory on a 192 bit bus, delivering 432.0 GB/s. The MI300X's memory clock runs at 1300 MHz with 5.2 Gbps effective data rate, while the LX ULTRA's memory runs at 2250 MHz with 18 Gbps effective.

Compute resources also differ by a wide margin. The MI300X has 19,456 shading units and 1,216 texture mapping units, with no ROPs recorded. The LX ULTRA has 6,144 shading units, 192 TMUs, and 96 ROPs. Pixel rate for the MI300X is listed as 0 MPixel/s, while the LX ULTRA achieves 192.0 GPixel/s. Texture rate on the MI300X reaches 2,553.6 GTexel/s, versus 384.0 GTexel/s on the LX ULTRA.

Peak compute figures tell a similar story. The MI300X delivers 81.72 TFLOPS for both FP32 and FP16, with a 1:1 ratio. The LX ULTRA provides 24.58 TFLOPS in FP32 and 49.15 TFLOPS in FP16, using a 2:1 ratio. That means the MI300X has roughly 3.3 times the FP32 throughput of the LX ULTRA.

Clock speeds are only partially recorded for the LX ULTRA, with no base or boost figures listed. The MI300X has a base clock of 1000 MHz and a boost clock of 2100 MHz.

Power and physical design differ as well. The MI300X has a TDP of 750 W, uses an OAM module slot, has no power connectors, and requires a suggested PSU of 1150 W. It has no display outputs and no DirectX, OpenGL, or Vulkan support. The LX ULTRA has a 225 W TDP, uses a dual-slot design with a single 16-pin power connector, and a suggested PSU of 550 W. It includes four DisplayPort 1.4a outputs and supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.3. Its dimensions are recorded as 268 mm in length, 112 mm in height, and 40 mm in width.

The bus interfaces also differ: the MI300X uses PCIe 5.0 x16, while the LX ULTRA uses PCIe 4.0 x16.

Release timing separates the two as well. The MI300X was released on December 5, 2023, succeeding the Radeon Instinct line. The LX ULTRA has a recorded release date of March 16, 2026, and is listed as Active in production status. No predecessor or successor is recorded for the LX ULTRA.

The Verdict

The data supports a clear split in intended roles. The AMD Instinct MI300X is a high-bandwidth, high-throughput accelerator aimed at compute-heavy workloads. Its 192 GB of HBM3 memory and 5.32 TB/s bandwidth put it in a different class from the LX ULTRA's 24 GB GDDR6 pool. Its FP32 and FP16 throughput of 81.72 TFLOPS each is roughly triple the LX ULTRA's FP32 figure.

The Lisuan Tech LX ULTRA, by contrast, brings a full display output suite with four DisplayPort 1.4a connections and full graphics API support including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.3. The MI300X has no display outputs and no graphics API support, indicating it is not intended for rendering or interactive workloads.

The LX ULTRA's 96 ROPs and 192.0 GPixel/s pixel rate give it a rasterization capability that the MI300X completely lacks, as the MI300X has zero ROPs and a zero pixel rate. This makes the LX ULTRA suited to tasks that require frame output, while the MI300X is built for data-parallel computation.

The power envelope also separates them. The MI300X draws 750 W and needs a 1150 W PSU, while the LX ULTRA draws 225 W and needs a 550 W PSU. The LX ULTRA's dual-slot form factor and 268 mm length make it a conventional add-in card, whereas the MI300X's OAM module format requires a different mounting and power infrastructure.

For database percentile ranking, the MI300X sits at 100 percent of all GPUs, while the LX ULTRA sits at 50 percent. That percentile difference aligns with the absence of measured benchmarks for the LX ULTRA, but it also reflects the MI300X's top-tier standing.

FAQ

Q: How does the AMD Instinct MI300X compare to the NVIDIA H200 NVL?

A: The MI300X scores 317,994 in Geekbench OpenCL, which is 5 percent behind the H200 NVL's average score of 334,891.

Q: What is the memory bandwidth difference between the two cards?

A: The MI300X provides 5.32 TB/s from 192 GB of HBM3 on an 8192 bit bus, while the LX ULTRA provides 432.0 GB/s from 24 GB of GDDR6 on a 192 bit bus.

Q: Does the Lisuan Tech LX ULTRA support display outputs?

A: Yes, the LX ULTRA has four DisplayPort 1.4a outputs and supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.3. The MI300X has no display outputs and no graphics API support.

Q: What are the FP32 compute figures for each card?

A: The MI300X reaches 81.72 TFLOPS in FP32, while the LX ULTRA reaches 24.58 TFLOPS. The MI300X also delivers 81.72 TFLOPS in FP16 with a 1:1 ratio, whereas the LX ULTRA delivers 49.15 TFLOPS with a 2:1 ratio.

Q: What power supply is recommended for each card?

A: The MI300X has a 750 W TDP and a suggested PSU of 1150 W. The LX ULTRA has a 225 W TDP and a suggested PSU of 550 W.

Q: Which card has a higher percentile ranking in the database?

A: The MI300X ranks in the 100th percentile against all GPUs, while the LX ULTRA ranks in the 50th percentile.

Where Each One Wins

The AMD Instinct MI300X wins decisively in memory capacity, memory bandwidth, and raw compute throughput. Its 192 GB HBM3 pool dwarfs the LX ULTRA's 24 GB GDDR6, and its 5.32 TB/s bandwidth is more than twelve times the LX ULTRA's 432.0 GB/s. For workloads that depend on feeding large models or datasets through a massive memory pipe, the MI300X is the clear choice based on the recorded specifications.

The MI300X also wins on shading unit count, with 19,456 versus 6,144 for the LX ULTRA. Its texture rate of 2,553.6 GTexel/s is more than six times the LX ULTRA's 384.0 GTexel/s. Its FP32 output of 81.72 TFLOPS is more than three times the LX ULTRA's 24.58 TFLOPS. The PCIe 5.0 x16 interface on the MI300X also gives it a generational advantage over the LX ULTRA's PCIe 4.0 x16 connection.

The Lisuan Tech LX ULTRA wins on rasterization and display output. Its 96 ROPs and 192.0 GPixel/s pixel rate give it rendering capabilities that the MI300X does not have at all, since the MI300X records zero ROPs and zero pixel rate. The LX ULTRA's four DisplayPort 1.4a outputs enable direct display connection, while the MI300X has no outputs. For any workload requiring visuals to be presented, the LX ULTRA is the only option between the two.

The LX ULTRA also wins on power efficiency and physical integration. Its 225 W TDP is a fraction of the MI300X's 750 W, and its suggested 550 W PSU is less than half of the MI300X's 1150 W requirement. The dual-slot form factor and standard 16-pin power connector make the LX ULTRA a drop-in card for conventional systems, while the MI300X's OAM module format and lack of power connectors require specialized infrastructure.

The graphics API support gives the LX ULTRA another clear advantage. DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.3 support mean it can run consumer and professional graphics applications, whereas the MI300X lists N/A for all three APIs. The LX ULTRA's production status is Active, and its release date of March 16, 2026 makes it a newer entry, though the MI300X's release on December 5, 2023 gives it earlier availability.

The MI300X holds the percentile advantage at 100 percent versus the LX ULTRA's 50 percent, and its nearest rivals all come from NVIDIA's H100, H200, B200, L40S, and RTX 6000 families. The LX ULTRA has no nearest rivals recorded, which leaves its competitive position undefined in the database. Based on the recorded data, the MI300X is the compute leader, while the LX ULTRA is the graphics-capable alternative.