combining ram speeds/sizes because of cost

[damoclescommando]

i currently have 1 8gb stick of hyperx savage ddr3 2400 in my machine, the other is in the process of being warranty replaced through kingston(hopefully).

im toying with the idea of increasing the ammount of ram i have once i get the new stick in, or if i dont get a new one then i'll definitely need to get more ram.
'
Asus rog maximus vii gene
4790k
mem as listed

https://www.newegg.com/Product/Product.aspx?Item=N82E16813132136 (mobo)
https://www.newegg.com/Product/Product.aspx?Item=N82E16820104519 (current ram)
https://www.newegg.com/Product/Product.aspx?item=9SIADZJ68A2396 (options)

currently the only 2400mhz 8gb sticks i can find are 400+

 

[Zerk2012]

Their no answer. When you add more memory their a chance it will not work together.

Might work, might not work, might be able to adjust some settings in BIOS and make it work.