differect RAM sizes on X99

[TemplateEntity]

Hi!

I've got 4x4 Kingston HyperX Predator DDR4 2133.

Is it okay to buy and install another set with same stats but 4x8?

I mean use 4x4 and 4x8 set combo

 

[Tradesman1]

Can try, no guarantees they will even play, even if you got an identical set of the same sticks you currently have there's no guarantees, more in my article, Fiction, Item 2, here:

http://www.tomshardware.co.uk/answers/id-2741495/ddr3-faqs-fiction.html