I have a Eurocom (http://www.eurocom.com/ec/specs(339)ec) with a Notebook P65_P67RGRERA mainboard, i76820hk, 4 slots (no idea if thats dual or quad channel), with 2 micron 8gb ddr4-2133. My question is if I should purchase one of these kits: http://www.newegg.com/Product/Product.aspx?Item=N82E16820232150 http://www.newegg.com/Product/Product.aspx?Item=N82E16820232156 and see if they will work with my existing ram for a total of 48gb, or if i should just purchase a 32gb set like one of these: http://www.newegg.com/Product/Product.aspx?Item=N82E16820232161 http://www.newegg.com/Product/Product.aspx?Item=N82E16820232167 that might run at a higher speed (2400/2666 instead of 2133) and possibly quad channel? but no chance at 48gb