Since this is for desktop, the NPU is irrelevant. Consumer-grade NPUs are not made for high performance. They are optimized for low power consumption, which makes sense when you are trying to run basic AI tasks on a laptop without turning it into a frying pan. On consumer-grade gear, the GPU will outperform the NPU, and since a desktop is not constrained by battery and can dissipate far more heat, the NPU is mostly irrelevant (aside from using it to develop software for laptop NPUs).