RAM Issue with new added RAM

HeinrichHeine

Honorable
Jan 21, 2014
5
0
10,510
So guys I was planning on adding to my RAM (2x 4GB Kingston DDR3-1600 CL11) 2x 4gb Kingston DDR3-1333Mhz CL9 (a friend of mine did'nt have any use for them, so he gave them to me) - I read this would work, but wanted to know what your opinion would be. I already tried to put in the new RAM, but it got me a black screen and Windows wouldn't boot, after I took out the new Ram everything was fine again. I'm sorry if this is a stupid question. If you need my Mobo: MSI Z87-G43, Intel Z87, So. 1150.