need new memory

[longjohn]

im looking for some new memory my system is

i5 3570k
gigabyte Z77X-UD5H
gigabyte gtx670

i currently have Corsair Vengeance Blue 8GB 1600MHz Dual/Quad Channel Kit but had to donate a stick to my son so thought i would upgrade, its really only a gaming computer so i guess i only need 8gb

 

[longjohn]

im think about this one

Corsair Dominator PLATINUM 8GB (2x4GB) DDR3 PC3-15000C9 1866MHz Dual Channel Kit with DHX Pro Connector (CMD8GX3M2A1866C9)

 

[longjohn]

so its not worth going for the 1866 then