Is it possible to stick 4gb 1Rx8 and 4gb 2Rx8 memory together?

Question

RAM

Good afternoon!
For a long time I took a memory module DIMM DDR3 4096MB PC12800 1600Mhz Hynix orig.
I decided to add more, I bought the same one today, when I got home it turned out that it was 2Rx8. And I have 1Rx8.
Run to change? or there is nothing wrong with that
Worth: HMT451U6BFR8C-PB N0 AA 11-13-A1
Bought: HMT351U6EFR8C-PB N0 AA 11-13-B1

Answer 1

50/50 - either take off or not.
Check.