I want to build a new gaming computer but cannot decide if I should go for the 4th gen i7 (http://www.newegg.com/Product/Product.aspx?Item=N82E16819117369&cm_re=Intel_Core_i7-4790K-_-19-117-369-_-Product) or the new 5th gen I7 (http://www.newegg.com/Product/Product.aspx?Item=N82E16819117402&cm_re=intel_core_i7_5820k-_-19-117-402-_-Product) Which architecture, cores and ghz is better for a gaming pc? Many thanks