Single core performance has little difference between your CPU and the Intel you mentioned. And Dolphin needs pretty high SCP so it can achieve full speed succesfully.
http://www.cpu-world.com/Compare/471/AMD_Phenom_II_X6_1090T_vs_Intel_Core_2_Duo_E7400.html
http://www.cpu-world.com/Compare/471/AMD_Phenom_II_X6_1090T_vs_Intel_Core_2_Duo_E7400.html
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.
