Upgrading Ram Question

Jem1021

Honorable
Nov 30, 2013
15
0
10,510
Hey guys finally built myself a computer (loving it) but had to settle for 4 gigs of ram ( G.SKILL NS 4GB (2 x 2GB) 240-Pin DDR3 ) because it was cyber monday and most 8 gig combos were sold out!

Ive decided im going to go ahead and upgrade because my motherboard has 4 ram slots, but my question is is it ok for me to buy one 4 gig ram stick to get to 8? (Same brand etc), or do i need to buy another set of 2x2?