It's my first time to build my own PC. I am not sure my list right or not. I am building a i5 PC. I am using a following part: CPU: i5 MB: GIGABYTE GA-P55-UD3L LGA 1156 Intel P55 ATX Intel Motherboard Vedio Card: Sapphire Radeon HD 5750 Ram: G.Skill 4GB 240-pin DDR3 Hard Drive:Western Digital Caviar Black WD6401AALS 640GB Power Supply:hec X-Power Pro 600 600W Does this system work? THANK YOU.