I'm doing a x99 build mainly for media serving and transcoding and was looking at getting a E5-2670 or E5-2680 v3 ES chip off of Ebay. My question is about matching a Xeon processor with ram. Does running a Xeon cpu mean that I will have to remain at the 2133 threshold which would work fine, or can you run the higher XMP memory of 2666 and above? I'm torn between stock 2133 ECC memory or getting the faster clocked ram just for the general zippiness of it. It's not for a gaming pc. Thanks