i am planning to upgrade to the x99 platform, can i buy two 8 gb dual kits (2 modules*4 gb+2*4=16 gb) or should i buy one 16 gb quad channel kit (4 modules*4 gb=16gb) or should i buy four 4gb single channel memories(4 modules * 4gb=16gb)? (all the memories will be placed in the right memory slots, just to keep that in mind)