Why are noobs always in love with OCZ or Corsair. If you want true stability in overclock and a longer life span with your memory, get the Kingston HyperX. If you shop at Fry's, you can usually find it on sale (4GB for $100). You may also want to consider going Quad Core. The Q9450 is only ~$330. It overclocks stable very easily to 3.4GHz with a Zalman CNPS8700 NT CPU cooler. Also, if you really are going to build in dual SLI mode with 4 HDD, you will need a 750 watt PSU. You otherwise will definitely have a power shortage and your system will not operate at full capacity. It seems you do not have much of a money issue. Consider Quad SLI using the GeForce 9800 GX2 and get a 1000 watt PSU. As for motherboards, I prefer Gigabyte boards. They are more energy efficient and are supreme for stability and life span. They also overclock very well and have no useless features. Think about it!!