Four AM2+ motherboards from ECS passed through AMD Phenom recommendation, The models AMD690VM-M2, AMD690GM-M2, A770M-A and nForce6M-A has passed trough a testing procedure that mainly divides into hardware aspect and software aspect. The hardware aspect is to test the electrical signal margin of CPU and memory to ensure that the voltage is stable and under the safety limitation. The software aspect confirms if operating condition is well in Windows XP and Windows VISTA system.