I need recommendations for purchasing DDR3 memory. I'm replacing a system pushing four years old so my budget has some room since I don't upgrades often, but I'd like to keep the memory cost around the mid $400 range. I'd like 4GB and decent timings. I plan on using the ASUS P5E3 Premium and a Q9450 as the system base. The board seems to be the only one that can reliably handle 4x1 memory overclocks. I've never overclocked before so I don't plan on doing serious overclocking, maybe a 400Mhz FSB. Will DDR3-1333 suffice or will DDR3-1600 be more to suite?