Solved Can i add 8GB RAM (1333/1600) to my existing (4GBx3=12GB) (1333) Tags: RAM Intel Intel i5 Memory Last response: August 18, 2013 3:44 AM in Memory Share dinesh7 August 18, 2013 12:49:55 AM I have Intel DB75EN board, i5 3550, with 3 sticks of 4GB RAM (1333) total 12GB. I need more RAM to instal virtual machines. Can i add 8GB RAM to the one available slot. More about : add 8gb ram 1333 1600 existing 4gbx3 12gb 1333 Reply to dinesh7 Best solution X79 August 18, 2013 3:44:09 AM That motherboard supports up to 1600Mhz RAM. So you can definitely add that. However it's best that you keep everything in one RAM "kit". So no, don't mix and match. Sell your old RAM and get a new kit which has the amount you want; that way you're sure that things will work out. The RAM have different timings and settings and these things can easily conflict. Must be some serious VMs you're running there. Reply to X79 Ask the community Post an answer Read discussions in other Memory categories Compatibility DDR2 DDR3 Dual Channel RAM Corsair G.SKILL !