Windows XP is not supported anymore. You´ll have to stick with either 7 or 8.1. Also, Haswell is one of the most recommended CPUs due to their tremendous performance in Dolphin terms.
Rig 1: Windows 10 Home | AMD A6-1450 @ 600/1000/1400 MHz | AMD Radeon HD Graphics 8250 | 4GB RAM | HP Pavilion TouchSmart 11.
Rig 2: Windows 10 Pro | Intel Core i7-2640M @ 780/2800/3500 MHz | Intel HD 3000 Mobile | 8GB RAM | Dell Latitude 6320.
