I would have thought that the 120.3 with good fans would be able to keep the 280 temps down. 12gb? What are you gonna be using the rig for Dave?
Case: Silverstone TJ07B-W, Psu: Tagan BZ-1300, Mobo: EVGA 790i Ultra, Cpu: QX9650, Ram: 4GB OCZ EB DDR3/1600, Gpu: EVGA 2xGTX 280, HD: 4x500gb Sata-300 Barracuda, DVD: Pioneer 215BK, Sound: Asus D2X/XDT, O/S: Vista Home Premium x64, Monitor: Dell 2408WFP
Loop 1: CPU/NB/SB/M.F : Rad: PA120.3, Fans: Xilence Blue Led, Res: XSPC 5.25, Pump: Ultra+EK Top, CPU: D-Tek V2, NB/SB/MF: EK
Loop 2: GPUx2 : Rad: Stealth 360, Fans: Xilence Red Wing, Res: XSPC 5.25, Pump: Ultra+EK Top, GPU: EK GPU+RAM