AMD Instinct MI300 vs Lisuan Tech LX ULTRA Comparison

Head-to-Head Benchmarks

The recorded data contains no benchmark scores for either the AMD Instinct MI300 or the Lisuan Tech LX ULTRA. Both entries show an average benchmark score of zero, a percentile rank of 50 against all GPUs, and an empty list of head-to-head results. The wins counters for both parts are also zero. Consequently, any direct performance comparison must be derived from the architectural and specification data recorded in the database, not from measured test outcomes.

The most significant performance indicator available is raw compute throughput. The AMD Instinct MI300 delivers 47.87 TFLOPS for both FP32 and FP16 operations, with a 1:1 ratio between these precisions. The Lisuan Tech LX ULTRA produces 24.58 TFLOPS in FP32 and 49.15 TFLOPS in FP16, using a 2:1 ratio. In FP32, the MI300 is 94.8% ahead of the LX ULTRA, nearly doubling the single-precision throughput. In FP16, the LX ULTRA takes a slim 2.7% lead, leveraging its doubled FP16 rate to surpass the MI300's flat FP16 scaling.

Memory bandwidth is another decisive differentiator. The MI300 uses 128 GB of HBM3 over an 8192-bit bus, yielding 5.32 TB/s of bandwidth. The LX ULTRA uses 24 GB of GDDR6 over a 192-bit bus, producing 432.0 GB/s. The MI300's bandwidth advantage is massive, over 12 times higher than the LX ULTRA's figure. This directly affects memory-bound workloads, where the MI300's HBM3 stack can feed its compute units far more rapidly.

Texture throughput follows the FP32 hierarchy. The MI300 reaches 1,496.0 GTexel/s from 880 texture mapping units, while the LX ULTRA reaches 384.0 GTexel/s from 192 TMUs. That is a 289.6% advantage for the MI300. Pixel rate shows the opposite pattern: the MI300 records 0 MPixel/s with zero ROPs, while the LX ULTRA delivers 192.0 GPixel/s from 96 ROPs. The MI300 has no rasterization pipeline, which is expected for a compute-oriented accelerator, while the LX ULTRA is a fully functional graphics processor.

The absence of benchmark data means these throughput figures are the primary quantitative basis for comparison. The MI300 is clearly positioned for massive parallel compute with enormous memory capacity and bandwidth, while the LX ULTRA balances compute and graphics capabilities with a more conventional memory subsystem.

Architecture Differences

The two processors diverge fundamentally in their design goals and underlying technology. The AMD Instinct MI300 uses the CDNA 3.0 architecture, built on a 5 nm process at TSMC with the chip codename Aqua Vanjaram. It packs 153,000 million transistors onto a die measuring 1017 mm², yielding a transistor density of 150.4 million per square millimeter. This is a massive, compute-optimized accelerator with no display outputs, no ROPs, and no graphics API support (DirectX, OpenGL, and Vulkan are all listed as N/A). Its power delivery requires a 600 W TDP, two 8-pin connectors, and a suggested 1000 W power supply. It uses a PCIe 5.0 x16 interface.

The Lisuan Tech LX ULTRA uses the TrueGPU architecture with the chip designation 7G105, manufactured on a 6 nm process, also at TSMC. Its transistor count and die size are recorded as unknown. It is a dual-slot graphics card with four DisplayPort 1.4a outputs and full graphics API support: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.3. Its TDP is 225 W, uses a single 16-pin connector, and requires a suggested 550 W power supply. It runs on a PCIe 4.0 x16 interface.

The MI300's clock behavior is fully specified: a base clock of 1000 MHz, a boost clock of 1700 MHz, and memory clocked at 1300 MHz with 5.2 Gbps effective data rate. The LX ULTRA has no recorded base or boost clocks, but its memory runs at 2250 MHz with 18 Gbps effective. The MI300 has no pixel rate because it lacks ROPs, while the LX ULTRA has a full rasterization pipeline.

Shading unit counts strongly differentiate the two. The MI300 has 14,080 shading units, while the LX ULTRA has 6,144. The MI300 also has 880 TMUs versus 192 on the LX ULTRA. The MI300 has zero ROPs, while the LX ULTRA has 96. Neither part lists ray tracing cores or tensor cores in the database.

The memory architectures are entirely different classes. The MI300 uses 128 GB of HBM3 with an 8192-bit bus and 5.32 TB/s bandwidth. The LX ULTRA uses 24 GB of GDDR6 with a 192-bit bus and 432.0 GB/s bandwidth. The MI300's memory is over five times larger in capacity and over twelve times faster in bandwidth. The LX ULTRA's GDDR6 is more conventional and lower-cost per gigabyte, but far slower in aggregate throughput.

Physical dimensions are similar in length and height: the MI300 measures 267 mm by 111 mm, while the LX ULTRA measures 268 mm by 112 mm. The LX ULTRA adds a width of 40 mm, confirming its dual-slot design. The MI300's slot width is not recorded.

Release dates differ by over three years. The MI300 launched on 2023-01-03, while the LX ULTRA's release date is 2026-03-16. The MI300's predecessor is listed as Radeon Instinct, while the LX ULTRA has no predecessor listed. The LX ULTRA's production status is Active, while the MI300's production status is not recorded.

FAQ

Q: Which processor has higher FP32 compute throughput?

A: The AMD Instinct MI300 delivers 47.87 TFLOPS in FP32, which is 94.8% higher than the Lisuan Tech LX ULTRA's 24.58 TFLOPS.

Q: Which processor has higher FP16 throughput?

A: The Lisuan Tech LX ULTRA delivers 49.15 TFLOPS in FP16 using a 2:1 ratio, which is 2.7% higher than the MI300's 47.87 TFLOPS at a 1:1 ratio.

Q: How do the memory subsystems compare?

A: The MI300 uses 128 GB of HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The LX ULTRA uses 24 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth. The MI300 has over 12 times the bandwidth and over five times the capacity.

Q: Can the MI300 output video?

A: No. The MI300 has no display outputs and lists DirectX, OpenGL, and Vulkan as N/A. The LX ULTRA has four DisplayPort 1.4a outputs and supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.3.

Q: What are the power requirements?

A: The MI300 has a 600 W TDP, uses two 8-pin connectors, and suggests a 1000 W power supply. The LX ULTRA has a 225 W TDP, uses one 16-pin connector, and suggests a 550 W power supply.

Q: Which processor has more shading units?

A: The MI300 has 14,080 shading units, which is 129.2% more than the LX ULTRA's 6,144 shading units.

Specification Differences

| Specification | AMD Instinct MI300 | Lisuan Tech LX ULTRA |

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

| Architecture | CDNA 3.0 | TrueGPU |

| Process Node | 5 nm | 6 nm |

| Transistors | 153,000 million | unknown |

| Die Size | 1017 mm² | unknown |

| Transistor Density | 150.4M / mm² | null |

| Base Clock | 1000 MHz | null |

| Boost Clock | 1700 MHz | null |

| Memory Clock | 1300 MHz 5.2 Gbps effective | 2250 MHz 18 Gbps effective |

| Memory Size | 128 GB | 24 GB |

| Memory Type | HBM3 | GDDR6 |

| Memory Bus Width | 8192 bit | 192 bit |

| Memory Bandwidth | 5.32 TB/s | 432.0 GB/s |

| Shading Units | 14080 | 6144 |

| TMUs | 880 | 192 |

| ROPs | 0 | 96 |

| Pixel Rate | 0 MPixel/s | 192.0 GPixel/s |

| Texture Rate | 1,496.0 GTexel/s | 384.0 GTexel/s |

| FP32 | 47.87 TFLOPS | 24.58 TFLOPS |

| FP16 | 47.87 TFLOPS (1:1) | 49.15 TFLOPS (2:1) |

| TDP | 600 W | 225 W |

| Slot Width | null | Dual-slot |

| Power Connectors | 2x 8-pin | 1x 16-pin |

| Suggested PSU | 1000 W | 550 W |

| Bus Interface | PCIe 5.0 x16 | PCIe 4.0 x16 |

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

| DirectX | N/A | 12 Ultimate (12_2) |

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.3 |

| Length | 267 mm 10.5 inches | 268 mm 10.6 inches |

| Height | 111 mm 4.4 inches | 112 mm 4.4 inches |

| Width | null | 40 mm 1.6 inches |

| Production Status | null | Active |

| Release Date | 2023-01-03 | 2026-03-16 |

| Predecessor | Radeon Instinct | null |

Where Each One Wins

The AMD Instinct MI300 wins in raw compute capacity and memory scale. Its FP32 throughput of 47.87 TFLOPS nearly doubles the LX ULTRA's 24.58 TFLOPS. Its shading unit count of 14,080 is more than double the LX ULTRA's 6,144. Texture rate of 1,496.0 GTexel/s is nearly four times higher. The 128 GB HBM3 pool with 5.32 TB/s bandwidth is in a different class entirely, suited for large model weights and high-bandwidth data streaming. The MI300 also uses a newer PCIe 5.0 x16 interface and a more advanced 5 nm process node.

The Lisuan Tech LX ULTRA wins in graphics-oriented workloads and power efficiency. It has a functional rasterization pipeline with 96 ROPs and a pixel rate of 192.0 GPixel/s, while the MI300 has zero ROPs and no display output capability. The LX ULTRA supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.3, making it usable for rendering and gaming. Its FP16 throughput of 49.15 TFLOPS edges past the MI300's 47.87 TFLOPS. Its 225 W TDP is less than half of the MI300's 600 W, and its suggested power supply is 550 W versus 1000 W. The LX ULTRA is also a dual-slot card with four DisplayPort outputs, whereas the MI300 has no display outputs at all.

The MI300 wins in memory bandwidth by a factor of over 12, making it preferable for memory-bound compute kernels. The LX ULTRA wins in physical practicality, with a lower power draw and a standard graphics card form factor. The MI300 uses 5 nm technology with 153,000 million transistors, while the LX ULTRA's transistor count is unknown. The MI300 launched in 2023, while the LX ULTRA is slated for 2026, indicating a significant generational gap.

The Verdict

The data clearly separates these two processors into distinct use cases. The AMD Instinct MI300 is a compute accelerator with no graphics capabilities, optimized for maximum FP32 throughput, massive memory capacity, and extreme bandwidth. It is not a graphics card; it has no display outputs and no graphics API support. Its 47.87 TFLOPS FP32 performance, 128 GB HBM3 memory, and 5.32 TB/s bandwidth position it for data center compute, scientific simulation, and large-scale AI workloads that require enormous memory footprints.

The Lisuan Tech LX ULTRA is a conventional graphics card with a full rasterization pipeline, display outputs, and modern graphics API support. Its 24.58 TFLOPS FP32 and 49.15 TFLOPS FP16 performance, combined with 24 GB GDDR6 memory and 432.0 GB/s bandwidth, make it suitable for graphics rendering and general-purpose compute. Its 225 W TDP and single 16-pin power connector indicate a much lower power envelope, and its PCIe 4.0 interface is one generation behind the MI300's PCIe 5.0.

Users requiring a display output, graphics API compatibility, or lower power consumption should select the LX ULTRA. Users requiring maximum FP32 compute, very large memory capacity, or very high memory bandwidth should select the MI300, provided they do not need any video output. The MI300's lack of ROPs and pixel rate of 0 MPixel/s confirms it cannot rasterize graphics. The LX ULTRA's higher FP16 throughput at 49.15 TFLOPS gives it an edge in FP16-heavy workloads, but its FP32 performance is roughly half of the MI300's.

The production status of the LX ULTRA is Active, while the MI300's status is not recorded. The MI300's predecessor is Radeon Instinct, while the LX ULTRA has no predecessor listed. Both parts have a percentile rank of 50 against all GPUs in the database, but this is based on zero measured benchmarks, so it carries no comparative weight. The verdict rests entirely on the recorded specifications: the MI300 is the compute powerhouse, and the LX ULTRA is the versatile graphics-capable alternative.