I dont know the motherboard or PSU quality, but it works 100% Ive taken very good care of it and its worked for me for the last 3 years. It was originally anHP. I changed the PSU RAM and GPU. I never had any crashes and ive run it on the pretty intense games. I built myself a moster rig, thats why I stopped using it, but it works great. Plays bioshock, far cry 3, WoW, BF3 and lots more with 60fps no problem.