GeeCoolGuest
GeeCoolGaming is almost entirely the dGPU's job; the 8945HS just needs to stay out of the way. The same card can vary 15–20% between full-power and power-limited laptops — a bigger swing than any CPU choice.
Two checks matter most when choosing: how many watts the GPU sustains plugged in, and whether MUX is supported; confirming both rarely steers wrong. iGPU-only versions are light-gaming machines at best.