This is the ruff estimate of what my system will be. basicly branding will be different. Now my questions are 1. What power supply should be good for this, i was thinking 550w but people are saying 600-650. The gpu is very efficient and has been seen working on like a 220w psu. My second question is my ram, should i go with the corsair, or use this cheaper brand of ddr3 1600mhz: http://www.newegg.com/Product/Product.aspx?Item=N82E168.... Im very close to finishing picking out the parts, this would be the last stretch. Thanks.