Cooler Master 690 w/ Real Power Pro 550W SLI Power Supply - (RC-690-KKA1-GP) Accommodates up to seven 120 mm fans for high-efficiency ventilation Removable HDD racks provide for easy assembly Cable management design for better cable routing and neatness Tool-free user-friendliness for quick maintenance and upgrade Roomy interior supports nVIDIA G80 SLI configuration