我也是,

去年装的, 花费$200 (用老的 RAM,硬盘,键盘/老鼠和monitor):

主板: MSI 785GT-E63 AM3/AM2+/AM2 AMD 785G HDMI ATX AMD Motherboard with video (HD4200), Giga network (Realtech) and HD audio.

机箱:Rosewill CHALLENGER Black Gaming ATX Mid Tower Computer Case, comes with Three Fans-1x Front Blue LED 120mm Fan, 1x Top 140mm Fan, 1x Rear 120mm Fan, option Fans-2x Side 120mm Fan

电源: OCZ ModXStream Pro OCZ500MXSP 500W ATX12V V2.2 / EPS12V SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC Power Supply compatible with core i7.

CPU: AMD Phenom II X3 720 Black Edition Heka 2.8GHz Socket AM3 95W Triple-Core Processor HDZ720WFK3DGI - OEM.

CPU Cooler: ARCTIC COOLING Freezer 64 Pro 92mm Ceramic CPU Cooler.

特点: 性价比好,几乎没有噪音. 电源在机箱下部,风扇向上吹.CPU风扇也是吹向上方.这样,散热是通过机箱顶的散热通道,省了机箱风扇.