The black model comes with more RAM and storage than the regular version of the smartphone, thus being a more compelling offer to consumers who care about specs. (androidheadlines.com)
So in terms of all that I wanted and then I got a bigger hard drive than I had before so that eliminated that problem and I've got more ram in it. (legaltalknetwork.com)
The S9 + also offers more RAM at 6 GB, versus 4 GB for the S9. (tomsguide.com)