a friend of mine who has selected the following configuration for his work station GPU: 1GB PNY Nvidia Quadro 600 HDD: 1TB Western Digital 3.5" HDD RAM: 8GB (4x2GB) Corsair DDR3 Vengeance PC3-12800 (1600) PSU: 1000W PSU, Silverstone Tech. Strider ST1000-P CASE: Silverstone Raven ST-RV03B MOTHERBOARD: Asus Z9PE-D8 WS MONITOR: 24" Dell U2412M IPS LED Monitor 2X CPU Intel Xeon E5-2603, S2011, Sandy Bridge, Quad Core, 1.8GHz, 10MB Cache, 80W, OEM My question is whether the above asus motherboard can run on a single CPU as in that case he can go for a faster CPU and then add 2nd CPu at a later date. He is going to be mainly using photo editing and movie editing softwares on this rig. Also if this motherboard supports single CPU he is planning to invest in 120GB Intel 520 series SSD. Thanks in Advance.