Some Question about the ram?

[marineshy64]

I am about to change the pre built ddr4 4gb ram
I originally wanted to go with a 2x4 but since the 16gb became more important I decided to go with a 8gb stick.

Questions are
1. If I later buy the same stick how much is risky to use them in dual channel. (Is there a big chance to succesfuly pair?)
2. Crucial, Patriot, or stick to kingston (which is more expensive here)
3. i have an M32CD4-K (prebuilt) mobo with h110 chipset, should I stay at 2133mzh (my current ram)
4. Is there any important advantage to buy one with heatsink

Thanks for reply

 

[Zerk2012]

Heatsinks now are more or less just for looks with the low voltage that memory needs.
2133 for a H110 board.
Anytime you mix memory thst was not dold in a matched set their a chance it might not work together.