novel4 years ago000Can I install these 2x8GB for my iMac 27" Late 2012, in addition to the existing 2x4GB already installed?Show in original language (German)Anonymous4 years ago000I agree with the feedback from matteoguglielmi. I would also use 4 identical module sizes of the same manufacturer & type (in this case DDR3L-RAM, SODIMM 204).Show in original language (German)Commentmatteoguglielmi4 years ago000Yes, but you're better off with 32 GB of ram (4 new dimms) for two reasons: 1) all memory modules are identical which won't impact performance 2) DDR3-RAM runs at 1.5 Volt *only* while DDR3L-RAM runs at both 1.35 and 1.5 Volt While in principle you should be able to mix DDR3 and DDR3L modules, I just wouldn't because of 1) and 2).Comment1 comment