NVIDIA GeForce RTX 5090 Mobile vs Lisuan Tech LX ULTRA Comparison

FAQ

Q: Which GPU has the higher average benchmark score in the database?

A: The NVIDIA GeForce RTX 5090 Mobile has an average benchmark score of 45152, placing it in the 84th percentile of all GPUs. The Lisuan Tech LX ULTRA has no recorded benchmark scores, an average score of 0, and sits in the 50th percentile.

Q: How does the RTX 5090 Mobile compare to its nearest rivals in average score?

A: The RTX 5090 Mobile sits within 1.8% of its closest rivals. It is 0.5% behind the AMD Radeon Pro 5500 XT (45384), 0.8% ahead of the NVIDIA GeForce RTX 4070 Ti (44795), 1% behind the Intel Arc A730M (45592), and 1.8% behind the NVIDIA RTX 5880 Ada Generation (45972).

Q: What are the memory specifications of each GPU?

A: Both GPUs have 24 GB of memory. The RTX 5090 Mobile uses GDDR7 on a 256-bit bus with 896.0 GB/s bandwidth. The LX ULTRA uses GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth.

Q: What are the TDP ratings for these two GPUs?

A: The RTX 5090 Mobile has a TDP of 95 W and uses no power connectors (it is an IGP). The LX ULTRA has a TDP of 225 W and requires a single 16-pin power connector, with a suggested PSU of 550 W.

Q: Which GPU has a faster memory clock?

A: The LX ULTRA has a memory clock of 2250 MHz (18 Gbps effective), while the RTX 5090 Mobile has a memory clock of 1750 MHz (28 Gbps effective). Despite the lower clock, the RTX 5090 Mobile achieves higher bandwidth due to its wider bus.

Q: What is the form factor of each GPU?

A: The RTX 5090 Mobile is an IGP (integrated graphics processor) with no slot width specified. The LX ULTRA is a Dual-slot card measuring 268 mm in length, 112 mm in height, and 40 mm in width.

Architecture Differences

The NVIDIA GeForce RTX 5090 Mobile is built on the GB203 chip using the Blackwell 2.0 architecture, manufactured on a 5 nm process at TSMC. It contains 45,600 million transistors on a 378 mm² die, yielding a transistor density of 120.6 million per mm². The Lisuan Tech LX ULTRA uses the 7G105 chip with the TrueGPU architecture, made on a 6 nm process, also at TSMC. Its transistor count and die size are unknown.

The RTX 5090 Mobile belongs to the GeForce 50 Mobile generation and is the successor to the GeForce 40 Mobile series. The LX ULTRA belongs to the 7G100 generation with no predecessor or successor listed. The RTX 5090 Mobile uses a PCIe 5.0 x16 bus interface, while the LX ULTRA uses PCIe 4.0 x16.

The RTX 5090 Mobile includes 82 RT cores and 328 tensor cores, features that are absent from the LX ULTRA's specification sheet (both fields are null). The RTX 5090 Mobile also has a higher shading unit count at 10496 versus 6144 for the LX ULTRA, and more TMUs at 328 versus 192. The RTX 5090 Mobile has 112 ROPs versus 96 on the LX ULTRA.

The RTX 5090 Mobile supports Vulkan 1.4, while the LX ULTRA supports Vulkan 1.3. Both support DirectX 12 Ultimate (12_2) and OpenGL 4.6. The RTX 5090 Mobile's display outputs are listed as "Portable Device Dependent," while the LX ULTRA has 4x DisplayPort 1.4a outputs.

The FP16 compute ratio differs significantly. The RTX 5090 Mobile delivers FP16 at a 1:1 ratio with FP32, both at 31.80 TFLOPS. The LX ULTRA delivers FP16 at a 2:1 ratio, reaching 49.15 TFLOPS while its FP32 is 24.58 TFLOPS.

Where Each One Wins

The RTX 5090 Mobile wins on raw compute throughput in FP32, delivering 31.80 TFLOPS versus 24.58 TFLOPS for the LX ULTRA. This represents a 29% advantage in single-precision floating-point work. The RTX 5090 Mobile also wins decisively on memory bandwidth, with 896.0 GB/s versus 432.0 GB/s, a 107% advantage. This makes the RTX 5090 Mobile better suited for bandwidth-intensive workloads such as high-resolution textures, large data sets, and memory-heavy compute tasks.

The RTX 5090 Mobile wins on texture rate with 496.9 GTexel/s versus 384.0 GTexel/s, a 29% advantage. It also wins on shading units and TMU counts, indicating stronger geometry and texture processing capabilities.

The LX ULTRA wins on pixel rate, delivering 192.0 GPixel/s versus 169.7 GPixel/s for the RTX 5090 Mobile, a 13% advantage. The LX ULTRA also wins on FP16 throughput with 49.15 TFLOPS versus 31.80 TFLOPS, a 55% advantage. This suggests the LX ULTRA may be better positioned for workloads that leverage half-precision math, such as certain AI inference or graphics effects that use FP16 acceleration.

The LX ULTRA uses GDDR6 memory while the RTX 5090 Mobile uses GDDR7, but the LX ULTRA has a higher memory clock at 2250 MHz versus 1750 MHz, even though the RTX 5090 Mobile achieves higher effective bandwidth.

The RTX 5090 Mobile has a much lower TDP at 95 W versus 225 W for the LX ULTRA. The RTX 5090 Mobile is an IGP with no power connectors, while the LX ULTRA is a dual-slot card requiring a 16-pin connector and a 550 W suggested PSU. This makes the RTX 5090 Mobile far more suitable for compact or power-constrained systems.

Specification Differences

| Specification | NVIDIA GeForce RTX 5090 Mobile | Lisuan Tech LX ULTRA |

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

| Chip | GB203 | 7G105 |

| Architecture | Blackwell 2.0 | TrueGPU |

| Process Node | 5 nm | 6 nm |

| Transistors | 45,600 million | unknown |

| Die Size | 378 mm² | unknown |

| Transistor Density | 120.6M / mm² | null |

| Base Clock | 990 MHz | null |

| Boost Clock | 1515 MHz | null |

| Memory Clock | 1750 MHz 28 Gbps effective | 2250 MHz 18 Gbps effective |

| Memory Type | GDDR7 | GDDR6 |

| Bus Width | 256 bit | 192 bit |

| Bandwidth | 896.0 GB/s | 432.0 GB/s |

| Shading Units | 10496 | 6144 |

| TMUs | 328 | 192 |

| ROPs | 112 | 96 |

| RT Cores | 82 | null |

| Tensor Cores | 328 | null |

| Pixel Rate | 169.7 GPixel/s | 192.0 GPixel/s |

| Texture Rate | 496.9 GTexel/s | 384.0 GTexel/s |

| FP32 | 31.80 TFLOPS | 24.58 TFLOPS |

| FP16 | 31.80 TFLOPS (1:1) | 49.15 TFLOPS (2:1) |

| TDP | 95 W | 225 W |

| Slot Width | IGP | Dual-slot |

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

| Suggested PSU | null | 550 W |

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

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

| Vulkan | 1.4 | 1.3 |

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

| Release Date | 2025-03-26 | 2026-03-16 |

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the RTX 5090 Mobile and the LX ULTRA. The RTX 5090 Mobile has ten recorded benchmark scores, while the LX ULTRA has none. This makes a direct numerical comparison impossible from benchmark data alone.

The RTX 5090 Mobile's strongest recorded scores include 5871 in 3DMark Steel Nomad DX12, 201834 in Geekbench OpenCL, and 198405 in Geekbench Vulkan. Its Passmark scores range from 138 in DirectX 12 to 324 in DirectX 9, with a G3D score of 30034 and a GPU compute score of 13401.

Since the LX ULTRA has no benchmark records, its performance must be inferred from its architectural specifications. The RTX 5090 Mobile's FP32 advantage of 31.80 TFLOPS versus 24.58 TFLOPS suggests it would outperform the LX ULTRA in most FP32-heavy workloads. The texture rate advantage of 496.9 GTexel/s versus 384.0 GTexel/s reinforces this conclusion.

The LX ULTRA's FP16 advantage of 49.15 TFLOPS versus 31.80 TFLOPS suggests it would win in FP16-heavy workloads, but the RTX 5090 Mobile's 1:1 FP16/FP32 ratio indicates more balanced compute capability. The LX ULTRA's pixel rate advantage of 192.0 GPixel/s versus 169.7 GPixel/s suggests it may handle fill-rate-bound tasks better.

The RTX 5090 Mobile's memory bandwidth of 896.0 GB/s versus 432.0 GB/s gives it a substantial advantage in memory-bound scenarios. The RTX 5090 Mobile also has a newer PCIe interface (5.0 versus 4.0), which could affect data transfer rates in supported systems.

In terms of nearest rivals, the RTX 5090 Mobile's average score of 45152 places it within 2% of several competing GPUs. The LX ULTRA has no nearest rivals listed, meaning the database cannot place it relative to other GPUs.

The Verdict

The data shows two fundamentally different products. The RTX 5090 Mobile is a low-power IGP with 95 W TDP, no power connectors, and a portable-device-dependent display output. The LX ULTRA is a high-power dual-slot card with 225 W TDP, a 16-pin connector, a 550 W suggested PSU, and four DisplayPort outputs.

For users prioritizing FP32 compute, texture processing, and memory bandwidth, the RTX 5090 Mobile is the stronger choice based on its 31.80 TFLOPS, 496.9 GTexel/s, and 896.0 GB/s figures. It also offers RT cores and tensor cores, which the LX ULTRA does not list. The RTX 5090 Mobile's 84th percentile ranking and average score of 45152 provide a measurable performance baseline.

For users prioritizing FP16 throughput, pixel fill rate, or who require a traditional add-in card form factor, the LX ULTRA has advantages. Its 49.15 TFLOPS FP16 and 192.0 GPixel/s pixel rate exceed the RTX 5090 Mobile's figures. Its dual-slot design and four DisplayPort outputs make it suitable for desktop integration.

The RTX 5090 Mobile's release date of 2025-03-26 precedes the LX ULTRA's 2026-03-16 release by nearly a year. Both are listed as Active in production status.

The absence of benchmark data for the LX ULTRA means its actual performance cannot be verified. The RTX 5090 Mobile's percentile ranking of 84 and its rival comparisons show it performs competitively with established GPUs. The LX ULTRA's 50th percentile ranking with no benchmark scores offers no comparable evidence.

The RTX 5090 Mobile is the only one of the two with recorded performance data, and that data indicates solid mid-tier placement. The LX ULTRA's specifications suggest capability in specific areas, but without benchmark confirmation, its real-world performance remains unquantified.