NVIDIA GeForce RTX 4090 Max-Q vs Lisuan Tech LX MAX Comparison

NVIDIA GeForce RTX 4090 Max-Q and Lisuan Tech LX MAX are both active mobile-class graphics solutions, but they occupy opposite ends of the physical and power spectrum. The RTX 4090 Max-Q is an IGP-class part with an 80 W TDP, designed for thin laptops, while the LX MAX is a dual-slot, 225 W board with a 16-pin power connector and a suggested 550 W power supply. Benchmark data for both parts is currently unavailable, so the analysis below relies entirely on their recorded specifications and architectural details.

Head-to-Head Benchmarks

No direct head-to-head benchmark results are recorded in the database for either part. The average benchmark score for both the NVIDIA GeForce RTX 4090 Max-Q and the Lisuan Tech LX MAX is 0, and their percentile standing against all GPUs is identical at 50. With zero wins recorded for each side, the comparison must be drawn from the raw compute and memory specifications rather than measured performance.

The RTX 4090 Max-Q delivers 28.31 TFLOPS of FP32 compute, which is 15% higher than the LX MAX's 24.58 TFLOPS. This advantage comes from a wider shading unit count: 9728 versus 6144. The NVIDIA part also has 304 texture mapping units against 192, yielding a texture rate of 442.3 GTexel/s compared to 384.0 GTexel/s, a 15% lead. In pixel throughput, however, the LX MAX counters with 192.0 GPixel/s versus 163.0 GPixel/s, a 18% advantage, driven by its 96 ROPs against 112 ROPs on the RTX part, despite the NVIDIA card having more ROPs. The effective difference comes from the clock behavior: the LX MAX's unspecified boost clock is high enough to push pixel rate ahead.

The FP16 comparison flips the result. The RTX 4090 Max-Q offers 28.31 TFLOPS with a 1:1 ratio to FP32, while the LX MAX provides 49.15 TFLOPS at a 2:1 ratio, which is 74% higher. This indicates the LX MAX is built for workloads that can exploit packed math, such as certain AI inferencing or compute tasks. The RTX 4090 Max-Q's FP16 performance is identical to its FP32, which is typical for Ada Lovelace consumer parts that do not double-rate FP16.

Memory bandwidth heavily favors the RTX 4090 Max-Q. It uses a 256-bit bus with 16 GB of GDDR6 at 18 Gbps effective, producing 576.0 GB/s. The LX MAX has a 192-bit bus with 12 GB of GDDR6 at the same 18 Gbps effective speed, yielding 432.0 GB/s. That is a 33% bandwidth advantage for the NVIDIA card, which directly impacts fill-rate bound scenarios and large data set workloads.

Where Each One Wins

The RTX 4090 Max-Q wins in scenarios where FP32 compute, texture throughput, and memory bandwidth dominate. Its 28.31 TFLOPS FP32 and 442.3 GTexel/s texture rate are the highest among the two, and the 576.0 GB/s bandwidth allows it to feed those units efficiently. This makes it the stronger candidate for standard rasterized gaming, where texture filtering and general shader work are primary, and for compute tasks that rely on single-precision math. The 16 GB frame buffer also provides more capacity for high-resolution textures and larger datasets in rendering or machine learning training.

The LX MAX wins in pixel-fill-bound situations and FP16-heavy workloads. Its 192.0 GPixel/s pixel rate is 18% ahead, which benefits scenes with heavy overdraw, high MSAA counts, or post-processing effects that stress ROP throughput. The FP16 output of 49.15 TFLOPS is 74% higher than the RTX part, so any application that uses half-precision math, such as certain neural network inference or compute shaders with FP16 accumulation, will run faster on the LX MAX. The 225 W TDP and dual-slot cooling also suggest it can sustain these rates without the thermal constraints of an 80 W Max-Q design, though sustained performance is not measured here.

The RTX 4090 Max-Q has 76 RT cores and 304 tensor cores, while the LX MAX lists no RT or tensor core counts in the database. For ray tracing and Tensor Core accelerated AI features, the RTX part is the only one with confirmed hardware support.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The NVIDIA GeForce RTX 4090 Max-Q delivers 28.31 TFLOPS of FP32, which is 15% higher than the Lisuan Tech LX MAX's 24.58 TFLOPS.

Q: How does memory bandwidth compare between the two?

A: The RTX 4090 Max-Q has 576.0 GB/s bandwidth from a 256-bit bus and 16 GB GDDR6, while the LX MAX has 432.0 GB/s from a 192-bit bus and 12 GB GDDR6, giving the NVIDIA part a 33% advantage.

Q: Does either GPU support ray tracing?

A: The RTX 4090 Max-Q lists 76 RT cores. The Lisuan Tech LX MAX does not have any RT core count recorded in the database.

Q: Which card has a higher pixel fill rate?

A: The Lisuan Tech LX MAX has a pixel rate of 192.0 GPixel/s, which is 18% higher than the RTX 4090 Max-Q's 163.0 GPixel/s.

Q: What are the power requirements for each?

A: The RTX 4090 Max-Q has an 80 W TDP and uses no power connectors, while the LX MAX has a 225 W TDP, requires one 16-pin connector, and suggests a 550 W power supply.

Q: Which part has a smaller physical footprint?

A: The RTX 4090 Max-Q is listed as an IGP (integrated graphics processor) with no slot width, whereas the LX MAX is a dual-slot card measuring 248 mm in length, 118 mm in height, and 48 mm in width.

Specification Differences

The two GPUs differ across nearly every major specification category. The RTX 4090 Max-Q uses the AD103 chip on a 5 nm TSMC process, while the LX MAX uses the 7G106 chip on a 6 nm TSMC process. The NVIDIA part has 45,900 million transistors on a 379 mm² die, giving a transistor density of 121.1M per mm². The LX MAX does not have transistor count, die size, or density recorded.

Memory configuration differs: the RTX 4090 Max-Q has 16 GB GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth, while the LX MAX has 12 GB GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth. Both run GDDR6 at 2250 MHz, which is 18 Gbps effective.

Compute resources: the RTX 4090 Max-Q has 9728 shading units, 304 TMUs, 112 ROPs, 76 RT cores, and 304 tensor cores. The LX MAX has 6144 shading units, 192 TMUs, 96 ROPs, and no recorded RT or tensor cores.

Clock speeds: the RTX 4090 Max-Q has a base clock of 930 MHz and a boost clock of 1455 MHz. The LX MAX has no base or boost clock recorded.

Power and physical: the RTX 4090 Max-Q is rated at 80 W TDP, IGP slot width, no power connectors, and no listed dimensions. The LX MAX is rated at 225 W TDP, dual-slot width, one 16-pin power connector, a suggested 550 W power supply, and dimensions of 248 mm length, 118 mm height, and 48 mm width.

API support: both support DirectX 12 Ultimate (12_2) and OpenGL 4.6. The RTX 4090 Max-Q supports Vulkan 1.4, while the LX MAX supports Vulkan 1.3.

Display outputs: the RTX 4090 Max-Q is listed as "Portable Device Dependent," while the LX MAX has 4x DisplayPort 1.4a.

Production status: both are listed as Active. The RTX 4090 Max-Q was released on 2023-01-02, while the LX MAX has a release date of 2026-03-16. The RTX 4090 Max-Q has a predecessor in GeForce 30 Mobile and a successor in GeForce 50 Mobile. The LX MAX has no predecessor or successor listed.

Architecture Differences

The RTX 4090 Max-Q is built on the Ada Lovelace architecture using the AD103 chip, fabricated on a 5 nm process by TSMC. It integrates 45,900 million transistors into a 379 mm² die. The architecture includes dedicated RT cores for ray tracing and tensor cores for AI acceleration, with the FP16 compute ratio set at 1:1 with FP32.

The Lisuan Tech LX MAX uses the TrueGPU architecture with the 7G106 chip, fabricated on a 6 nm process by TSMC. Transistor count and die size are not recorded. The architecture has no listed RT or tensor cores. Its FP16 performance is 2:1 relative to FP32, meaning it doubles the rate for half-precision operations, which is a different compute strategy than the NVIDIA part.

The process node difference, 5 nm versus 6 nm, is the only confirmed fabrication detail. The RTX 4090 Max-Q's higher transistor count, 45,900 million, suggests a more complex design with more specialized units, while the LX MAX's simpler unit layout with fewer shaders and no RT cores aligns with its lower FP32 output. The RTX 4090 Max-Q also supports Vulkan 1.4, a newer version than the LX MAX's Vulkan 1.3.

The Verdict

The recorded data shows two distinct design philosophies. The NVIDIA GeForce RTX 4090 Max-Q is a low-power, high-efficiency part with 80 W TDP, 16 GB memory, and a full complement of RT and tensor cores. Its 28.31 TFLOPS FP32, 442.3 GTexel/s texture rate, and 576.0 GB/s bandwidth make it the stronger choice for general gaming, ray tracing, and FP32 compute workloads. The 16 GB frame buffer is double the LX MAX's 12 GB, which matters for large textures or models.

The Lisuan Tech LX MAX is a high-power, dual-slot desktop-style card with 225 W TDP and a 550 W suggested power supply. It wins on pixel fill rate at 192.0 GPixel/s and FP16 compute at 49.15 TFLOPS, which is 74% above the RTX part. Its 12 GB memory and 432.0 GB/s bandwidth are lower, and it lacks confirmed RT or tensor cores. This makes it suitable for FP16-heavy compute tasks or pixel-bound rendering, but not for ray tracing.

Users who need a mobile-friendly GPU with broad feature support, including ray tracing and AI acceleration, should choose the RTX 4090 Max-Q. Users who prioritize raw pixel throughput or FP16 math and can accommodate a dual-slot, 225 W card should consider the LX MAX. The absence of benchmark scores means these conclusions are based purely on specification analysis, not measured results.