NVIDIA GeForce RTX 4090 Mobile vs Lisuan Tech LX MAX Comparison

The Verdict

The database shows two very different products. The NVIDIA GeForce RTX 4090 Mobile is a laptop-class GPU with a wide set of measured benchmark results, while the Lisuan Tech LX MAX is a desktop-style add-in card with no recorded benchmark scores. The RTX 4090 Mobile holds an 84th percentile ranking among all GPUs, with an average benchmark score of 43,667. The LX MAX sits at the 50th percentile with an average score of zero, meaning no validated performance data exists for it in the database.

For users who need proven performance, the RTX 4090 Mobile is the only choice with actual measurements. Its nearest rivals in the database include the NVIDIA RTX A6000 (average score 44,075, which is 0.9% higher) and the Quadro M6000 (average score 43,301, which is 0.8% lower). The RTX 5050 Mobile sits 0.9% behind, and the Quadro M6000 24 GB also sits 0.9% behind. This places the RTX 4090 Mobile in a tight cluster of high-end GPUs, all within roughly one percent of each other.

The Lisuan Tech LX MAX cannot be recommended for any workload based on measured data, because no benchmark results are recorded. Its specifications suggest it targets a different market segment, but without scores, any performance claim remains unverified. The RTX 4090 Mobile delivers confirmed results across DirectX 10, 11, 12, and 9 tests, OpenCL, Vulkan, and compute workloads.

Architecture Differences

The two GPUs come from different architectural families. The RTX 4090 Mobile uses the AD103 chip built on Ada Lovelace architecture, manufactured by TSMC on a 5 nm process. It contains 45,900 million transistors on a 379 mm² die, giving a transistor density of 121.1 million per square millimeter. The LX MAX uses the 7G106 chip with TrueGPU architecture, belonging to the 7G100 generation, also built by TSMC but on a 6 nm process. Its transistor count and die size are listed as unknown in the database.

The RTX 4090 Mobile implements 76 ray tracing cores and 304 tensor cores, both absent from the LX MAX data. The RTX 4090 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The LX MAX also supports DirectX 12 Ultimate (12_2) and OpenGL 4.6 but lists Vulkan 1.3, one version older.

The RTX 4090 Mobile is an integrated GPU package (IGP) with no power connectors and a 120 W TDP, designed for portable devices. The LX MAX is a dual-slot card measuring 248 mm in length, 118 mm in height, and 48 mm in width, requiring a single 16-pin power connector and a 550 W suggested power supply. Display outputs differ as well: the RTX 4090 Mobile is portable-device dependent, while the LX MAX provides four DisplayPort 1.4a outputs.

FAQ

Q: Which GPU has more shading units?

A: The RTX 4090 Mobile has 9,728 shading units, compared to 6,144 on the LX MAX. The RTX 4090 Mobile also has 304 texture mapping units versus 192, and 112 raster output pipelines versus 96.

Q: How does memory capacity compare?

A: The RTX 4090 Mobile has 16 GB of GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth. The LX MAX has 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth. Both use memory clocked at 2250 MHz with 18 Gbps effective speed.

Q: What is the difference in FP32 compute performance?

A: The RTX 4090 Mobile delivers 32.98 TFLOPS of FP32 performance. The LX MAX delivers 24.58 TFLOPS. This means the RTX 4090 Mobile is approximately 34% higher in FP32 throughput.

Q: Does the LX MAX support ray tracing?

A: The database lists no ray tracing core count for the LX MAX. The RTX 4090 Mobile has 76 ray tracing cores. The LX MAX supports DirectX 12 Ultimate, which includes ray tracing API features, but the hardware implementation is unspecified.

Q: How do the power requirements differ?

A: The RTX 4090 Mobile has a 120 W TDP and no power connectors, fitting an integrated form factor. The LX MAX has a 225 W TDP and requires one 16-pin power connector with a 550 W suggested power supply.

Q: Which GPU has better Vulkan support?

A: The RTX 4090 Mobile supports Vulkan 1.4, while the LX MAX supports Vulkan 1.3. The RTX 4090 Mobile also has a recorded Vulkan benchmark score of 170,774, while the LX MAX has no Vulkan benchmark data.

Specification Differences

The two GPUs differ across nearly every measurable specification. The process node differs: 5 nm for the RTX 4090 Mobile versus 6 nm for the LX MAX. Transistor count and die size are known only for the RTX 4090 Mobile (45,900 million and 379 mm², respectively), while both are unknown for the LX MAX.

Clock speeds: the RTX 4090 Mobile has a base clock of 1335 MHz and a boost clock of 1695 MHz. The LX MAX lists no base or boost clock in the database. Memory clocks match at 2250 MHz with 18 Gbps effective bandwidth.

Memory configuration differs in capacity, bus width, and bandwidth. The RTX 4090 Mobile has 16 GB, a 256-bit bus, and 576.0 GB/s. The LX MAX has 12 GB, a 192-bit bus, and 432.0 GB/s.

Compute resources differ substantially. The RTX 4090 Mobile has 9,728 shading units, 304 TMUs, and 112 ROPs. The LX MAX has 6,144 shading units, 192 TMUs, and 96 ROPs. Ray tracing and tensor core counts exist only for the RTX 4090 Mobile (76 and 304, respectively), with no equivalents listed for the LX MAX.

Fill rates and texture rates reflect the resource differences. The RTX 4090 Mobile achieves 189.8 GPixel/s and 515.3 GTexel/s. The LX MAX achieves 192.0 GPixel/s and 384.0 GTexel/s. The pixel rate is slightly higher on the LX MAX, but the texture rate is considerably lower.

FP32 performance is 32.98 TFLOPS on the RTX 4090 Mobile versus 24.58 TFLOPS on the LX MAX. FP16 performance shows a different relationship: the RTX 4090 Mobile matches its FP32 at 32.98 TFLOPS (1:1 ratio), while the LX MAX doubles its FP32 to 49.15 TFLOPS (2:1 ratio).

Power and physical design differ completely. The RTX 4090 Mobile is an IGP with 120 W TDP and no power connectors. The LX MAX is a dual-slot card with 225 W TDP, one 16-pin connector, and a 550 W suggested PSU. It measures 248 mm by 118 mm by 48 mm. The RTX 4090 Mobile has no listed dimensions.

Head-to-Head Benchmarks

The head-to-head benchmark field in the database is empty, and the RTX 4090 Mobile has nine recorded test scores while the LX MAX has none. However, the RTX 4090 Mobile's scores can be examined directly.

In Geekbench OpenCL, the RTX 4090 Mobile scores 180,831. In Geekbench Vulkan, it scores 170,774. These are the largest single-test numbers in its record.

PassMark tests show a spread across DirectX versions. The DirectX 9 score is 310, DirectX 10 is 173, DirectX 11 is 262, and DirectX 12 is 107. The G2D score is 984, and the G3D score is 27,212. The GPU compute score is 12,347.

The average benchmark score across all tests is 43,667. The nearest rivals provide context: the RTX A6000 scores 44,075, which is 0.9% higher. The Quadro M6000 scores 43,301 (0.8% lower), the RTX 5050 Mobile scores 43,268 (0.9% lower), and the Quadro M6000 24 GB scores 43,262 (0.9% lower). These deltas show the RTX 4090 Mobile performs within one percent of a professional workstation GPU and the next-generation mobile chip.

The LX MAX has no benchmark entries, so no direct comparison of measured scores is possible. Its average benchmark score is recorded as zero, and its nearest rivals list is empty. The percentile ranking of 50 indicates the database places it at the median, but without test results, this ranking carries no empirical weight.

Where Each One Wins

The RTX 4090 Mobile wins in every workload category where data exists. It delivers higher FP32 throughput (32.98 TFLOPS versus 24.58 TFLOPS), more shading units (9,728 versus 6,144), more texture units (304 versus 192), and more raster units (112 versus 96). Its memory subsystem is wider (256-bit versus 192-bit) and faster (576.0 GB/s versus 432.0 GB/s) with more capacity (16 GB versus 12 GB).

Texture-heavy workloads favor the RTX 4090 Mobile by a wide margin. Its texture rate of 515.3 GTexel/s is 34% higher than the LX MAX's 384.0 GTexel/s. Pixel rates are nearly identical, with the LX MAX at 192.0 GPixel/s and the RTX 4090 Mobile at 189.8 GPixel/s, a difference of roughly one percent that does not offset the other gaps.

Ray tracing and tensor workloads fall entirely to the RTX 4090 Mobile, since the LX MAX has no listed ray tracing or tensor core counts. DirectX 12 Ultimate support exists on both, but the RTX 4090 Mobile has the hardware units to execute those workloads.

The LX MAX wins in two areas from the specification sheet. Its FP16 compute of 49.15 TFLOPS is substantially higher than the RTX 4090 Mobile's 32.98 TFLOPS, due to its 2:1 FP16 ratio. This suggests a design optimized for mixed-precision workloads, though no benchmark confirms real-world gains. It also has a slightly higher pixel rate at 192.0 GPixel/s versus 189.8 GPixel/s.

For physical integration, the LX MAX offers four DisplayPort 1.4a outputs, while the RTX 4090 Mobile's display outputs depend on the portable device. The LX MAX also has a higher TDP of 225 W versus 120 W, which can indicate sustained performance headroom, but it requires a 550 W power supply and a dual-slot chassis.

The database shows the RTX 4090 Mobile as the only GPU with validated performance. Users seeking confirmed results across DirectX, OpenCL, Vulkan, and compute workloads should select the RTX 4090 Mobile. The LX MAX remains an unmeasured product, and its higher FP16 throughput and slightly faster pixel rate do not compensate for the absence of benchmark evidence.