AMD Radeon RX 6550S vs Lisuan Tech LX ULTRA Comparison

Head-to-Head Benchmarks

The database records no direct head-to-head benchmark results between the AMD Radeon RX 6550S and the Lisuan Tech LX ULTRA. Both entries show an average benchmark score of zero and a percentile ranking of 50 against all GPUs, meaning the aggregate performance data is incomplete or not yet populated. This absence of measured scores limits direct numerical comparison, but the recorded specifications allow for a clear performance projection based on the hardware parameters each unit carries.

The LX ULTRA delivers 24.58 TFLOPS of FP32 compute, which is exactly five times the 4.915 TFLOPS of the RX 6550S. In FP16 with 2:1 ratio, the LX ULTRA reaches 49.15 TFLOPS versus 9.830 TFLOPS for the RX 6550S, again a fivefold difference. Pixel throughput shows the LX ULTRA at 192.0 GPixel/s compared to 76.80 GPixel/s, a 2.5 times advantage. Texture rate favors the LX ULTRA even more decisively: 384.0 GTexel/s versus 153.6 GTexel/s, exactly 2.5 times higher.

Memory bandwidth tells a similar story. The LX ULTRA has 432.0 GB/s of bandwidth, while the RX 6550S has 128.0 GB/s. This is a 3.375 times difference. The LX ULTRA pairs 24 GB of GDDR6 memory on a 192-bit bus with an effective 18 Gbps memory clock, while the RX 6550S has 4 GB on a 64-bit bus at 16 Gbps effective. The shading unit count also diverges sharply: 6144 on the LX ULTRA versus 1024 on the RX 6550S, a 6x difference. TMUs number 192 versus 64, and ROPs 96 versus 32, both three times higher on the LX ULTRA.

The RX 6550S holds advantages in power efficiency and form factor. Its 50 W TDP is a fraction of the 225 W TDP for the LX ULTRA. The RX 6550S is an IGP-class solution with no power connectors and portable-device-dependent display outputs, whereas the LX ULTRA is a dual-slot card with a 1x 16-pin power connector, a suggested 550 W PSU, 268 mm length, 112 mm height, and 40 mm width, with four DisplayPort 1.4a outputs. The RX 6550S also carries a higher Vulkan API version, 1.4 versus 1.3 on the LX ULTRA.

Where Each One Wins

The RX 6550S wins in scenarios demanding minimal power draw and compact integration. Its 50 W TDP enables deployment in portable devices where the LX ULTRA's 225 W TDP would be impossible. The IGP slot width and lack of power connectors mean the RX 6550S fits directly into mobile platforms without external cabling or cooling accommodations. For thin-and-light systems, the RX 6550S is the only viable option here.

The LX ULTRA wins in raw compute throughput and memory capacity. Its 24 GB frame buffer supports workloads that exceed 4 GB, such as large AI inference batches, high-resolution texture sets, or multi-display rendering. The 192-bit memory bus and 432.0 GB/s bandwidth provide ample data flow for the 24.58 TFLOPS compute capability. The dual-slot design with a 16-pin connector and 550 W suggested PSU indicates a desktop-class installation where power and space are available.

The LX ULTRA's 4x DisplayPort 1.4a outputs support multi-monitor setups directly, while the RX 6550S relies on portable-device-dependent outputs. The LX ULTRA also has substantially higher pixel and texture rates, making it suited for high-resolution rendering and texture-heavy workloads. In contrast, the RX 6550S, with its 76.80 GPixel/s and 153.6 GTexel/s, targets lower-resolution or less demanding graphical tasks.

The RX 6550S wins on API compatibility with Vulkan 1.4 support versus 1.3 on the LX ULTRA. Both cards support DirectX 12 Ultimate (12_2) and OpenGL 4.6, so those API levels do not differentiate them. The RX 6550S also has a known predecessor, Polaris Mobile, while the LX ULTRA lists none, suggesting the AMD part has a longer lineage in mobile products.

Architecture Differences

The RX 6550S uses the Navi 24 chip based on RDNA 2.0 architecture, part of the Navi Mobile generation within the RX 6000 series. The LX ULTRA uses the 7G105 chip based on TrueGPU architecture, part of the 7G100 generation. Both are fabricated on a 6 nm process at TSMC, but the RX 6550S has a recorded transistor count of 5,400 million on a 107 mm² die, yielding a transistor density of 50.5M per mm². The LX ULTRA has unknown transistor count and die size, so density cannot be calculated.

The RX 6550S has 16 ray tracing cores, while the LX ULTRA lists no ray tracing core count. This suggests the AMD part includes dedicated hardware for ray-traced workloads, whereas the LX ULTRA may rely on alternative methods or lack that feature entirely. Both support DirectX 12 Ultimate, which mandates ray tracing support, but the implementation differs in hardware resources.

Clock behavior also differs. The RX 6550S has explicit base, boost, and game clocks at 2000 MHz, 2400 MHz, and 2170 MHz respectively. The LX ULTRA lists no base, boost, or game clocks, only a memory clock of 2250 MHz with 18 Gbps effective. This means the LX ULTRA's compute clock is unspecified in the database, making direct frequency comparison impossible.

Memory architecture diverges completely. The RX 6550S uses 4 GB GDDR6 on a 64-bit bus with 128.0 GB/s bandwidth, while the LX ULTRA uses 24 GB GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth. The RX 6550S memory runs at 2000 MHz with 16 Gbps effective, while the LX ULTRA runs at 2250 MHz with 18 Gbps effective. The LX ULTRA has six times the memory capacity and over three times the bandwidth.

The bus interface differs: PCIe 4.0 x4 on the RX 6550S versus PCIe 4.0 x16 on the LX ULTRA. The x16 connection provides eight times the lane bandwidth for data transfers, benefiting workloads that move large datasets between CPU and GPU. The RX 6550S's x4 interface suits its mobile, low-power context.

Power delivery architecture is fundamentally different. The RX 6550S is rated at 50 W with no power connectors and an IGP slot width, indicating a soldered or embedded design. The LX ULTRA is rated at 225 W with a 1x 16-pin power connector, a 550 W suggested PSU, and dual-slot width, indicating a discrete add-in board. Physical dimensions for the LX ULTRA are recorded at 268 mm by 112 mm by 40 mm, while the RX 6550S has no length, height, or width recorded.

The RX 6550S was released on 2023-01-03, while the LX ULTRA has a release date of 2026-03-16. Both are marked as Active in production status. The RX 6550S lists Polaris Mobile as its predecessor and no successor, while the LX ULTRA lists neither predecessor nor successor.

The Verdict

The data indicates two GPUs with opposite design philosophies. The RX 6550S is a 50 W, IGP-class mobile part with 4 GB memory, 1024 shading units, and a 64-bit bus. The LX ULTRA is a 225 W, dual-slot desktop card with 24 GB memory, 6144 shading units, and a 192-bit bus. The LX ULTRA outperforms the RX 6550S in every raw compute metric: FP32 is 5x higher, FP16 is 5x higher, pixel rate is 2.5x higher, texture rate is 2.5x higher, and memory bandwidth is 3.375x higher.

Users who need maximum compute throughput, large memory capacity, or multi-display output should choose the LX ULTRA. Its 24 GB frame buffer and 432.0 GB/s bandwidth handle workloads that the RX 6550S cannot even address due to the 4 GB limit. The LX ULTRA's four DisplayPort 1.4a outputs support direct multi-monitor configurations without adapter dependencies.

Users who prioritize low power consumption, compact integration, or portable device compatibility should choose the RX 6550S. Its 50 W TDP allows operation in systems where the LX ULTRA's 225 W TDP would exceed thermal and power budgets. The IGP form factor and no power connector requirement make the RX 6550S suitable for embedded or mobile platforms.

The RX 6550S also offers Vulkan 1.4 support, one version ahead of the LX ULTRA's 1.3, and includes 16 ray tracing cores that the LX ULTRA does not list. For ray-tracing workloads specifically, the RX 6550S has dedicated hardware, though its overall compute capacity is far below the LX ULTRA.

Neither card has recorded benchmark scores in the database, and both share the same 50th percentile ranking. The specification differences, however, create a clear performance hierarchy. The LX ULTRA is the higher-performance part by a wide margin. The RX 6550S is the lower-power, more portable alternative with newer Vulkan support and explicit ray tracing hardware.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The Lisuan Tech LX ULTRA delivers 24.58 TFLOPS, which is exactly five times the 4.915 TFLOPS of the AMD Radeon RX 6550S.

Q: How much memory does each GPU have?

A: The RX 6550S has 4 GB of GDDR6 memory on a 64-bit bus, while the LX ULTRA has 24 GB of GDDR6 memory on a 192-bit bus.

Q: What is the memory bandwidth difference?

A: The LX ULTRA provides 432.0 GB/s, while the RX 6550S provides 128.0 GB/s. The LX ULTRA's bandwidth is 3.375 times higher.

Q: Which GPU has ray tracing cores?

A: The RX 6550S has 16 ray tracing cores. The LX ULTRA lists no ray tracing core count in the database.

Q: What are the power requirements for each?

A: The RX 6550S has a 50 W TDP with no power connectors. The LX ULTRA has a 225 W TDP, requires a 1x 16-pin power connector, and has a suggested PSU of 550 W.

Q: Which GPU supports a newer Vulkan version?

A: The RX 6550S supports Vulkan 1.4, while the LX ULTRA supports Vulkan 1.3. Both support DirectX 12 Ultimate (12_2) and OpenGL 4.6.

Q: What are the physical dimensions of the LX ULTRA?

A: The LX ULTRA measures 268 mm in length, 112 mm in height, and 40 mm in width, with a dual-slot form factor. The RX 6550S has no dimensions recorded and uses an IGP slot width.

Specification Differences

| Specification | AMD Radeon RX 6550S | Lisuan Tech LX ULTRA |

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

| Architecture | RDNA 2.0 | TrueGPU |

| Chip | Navi 24 | 7G105 |

| Generation | Navi Mobile (RX 6000M) | 7G100 |

| Process Node | 6 nm | 6 nm |

| Foundry | TSMC | TSMC |

| Transistors | 5,400 million | unknown |

| Die Size | 107 mm² | unknown |

| Transistor Density | 50.5M / mm² | null |

| Base Clock | 2000 MHz | null |

| Boost Clock | 2400 MHz | null |

| Game Clock | 2170 MHz | null |

| Memory Clock | 2000 MHz, 16 Gbps effective | 2250 MHz, 18 Gbps effective |

| Memory Size | 4 GB | 24 GB |

| Memory Type | GDDR6 | GDDR6 |

| Memory Bus Width | 64 bit | 192 bit |

| Memory Bandwidth | 128.0 GB/s | 432.0 GB/s |

| Shading Units | 1024 | 6144 |

| TMUs | 64 | 192 |

| ROPs | 32 | 96 |

| RT Cores | 16 | null |

| Pixel Rate | 76.80 GPixel/s | 192.0 GPixel/s |

| Texture Rate | 153.6 GTexel/s | 384.0 GTexel/s |

| FP32 | 4.915 TFLOPS | 24.58 TFLOPS |

| FP16 | 9.830 TFLOPS (2:1) | 49.15 TFLOPS (2:1) |

| TDP | 50 W | 225 W |

| Slot Width | IGP | Dual-slot |

| Power Connectors | None | 1x 16-pin |

| Suggested PSU | null | 550 W |

| Bus Interface | PCIe 4.0 x4 | PCIe 4.0 x16 |

| Display Outputs | Portable Device Dependent | 4x DisplayPort 1.4a |

| DirectX | 12 Ultimate (12_2) | 12 Ultimate (12_2) |

| OpenGL | 4.6 | 4.6 |

| Vulkan | 1.4 | 1.3 |

| Dimensions | null | 268 mm x 112 mm x 40 mm |

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

| Predecessor | Polaris Mobile | null |

| Successor | null | null |