Digging into the silicon-level details, the most revealing differentiator in this group is Thermal Design Power: the MSI Raider 18 operates at a 95W TDP versus the Legion's 80W. TDP is not just a heat metric — it defines the sustained power envelope the GPU can draw, which directly sets the ceiling for consistent performance under prolonged load. A 15W advantage means the Raider's GPU can maintain higher clock states for longer during extended gaming or rendering sessions, partially explaining the TFLOPS gap seen in the raw specs.
The GPU compute hierarchy is reinforced at the shader level: the Raider's 10,496 shading units, 328 TMUs, and 128 ROPs compare to the Legion's 7,680 shaders, 256 TMUs, and 96 ROPs. More shading units improve parallelism in complex scenes, more TMUs accelerate texture throughput, and more ROPs increase pixel output capacity — all pointing to the same conclusion as the TFLOPS figures. Both machines share identical memory subsystem specs (256-bit bus, 811.5 GB/s bandwidth, 25400 MHz effective speed), meaning the memory pipeline is not a bottleneck differentiator between them.
Everything else in this group is a wash — same Blackwell architecture, same CPU cache configuration, identical instruction set support, shared Resizable BAR, and matching API support levels. The MSI Raider 18 holds a clear and consistent edge here, with its higher TDP and greater shader/TMU/ROP counts forming a coherent picture of a more capable GPU unit. The Legion Pro 7i is not underpowered, but at the architectural detail level, the Raider's GPU is simply the larger implementation of the same generation.