Looking for a cheapish upgrade and have selected the following: FX 6300 Hyper 212 evo M5A97 EVO R2 MSI R9 270 G-Skill 8GB Ripjaws X DDR3 2133 Dual Kit Is it worth getting the 2133 RAM over 1600? it's a fair bit more expensive if it makes no difference in games. This will all be powered by a 500W dual 12V rail PSU. 17A on one rail, 18A on the other. Hopefully should be good enough.