Putting together my new computer?

[zanthor]

So how important is it for me to upgrade to ddr3 1600 or 2k? Or is 12gig of 1300 gunna kick butt already? And if i have a old hard drive I Am using what profomance am I losing?

I can't imagine this has changed since the last time I read a comprehensive review on memory speeds, but what I got back a year or two ago was that the performance gained by dumping boatloads of cash on uber high end memory gains you 1-2% performance. It is ONLY a reasonable investment if you plan on overclocking the shit out of your system.