It doesn't have to be HyperX Fury. For that matter, the HyperX sold on amazon is different from the HyperX that comes with the Aurora.  For that, you'd need to buy it from Dell direct.  It is custom spec'ed for Dell, and only Dell HyperX Fury RAM is validated to work with the Aurora.  People have had issues with RAM upgrades, just look around this forum to see what brands have worked for other people, and try to use those.  There are some brands that people have found do not work - this PC is picky with RAM upgrades. 
Just got the Aurora R10 and had a few questions that I couldn't find out in Google-land.  1. Can RGB memory be added to the Aurora R10? I have the Dark Side of the Moon unit, but I see the vents on the left and top, so I'd expect you'd be able to see some of the lighting. 2. Do you have to change any BIOS settings if you upgrade the memory? 3. Does it have to Fury, XMP, etc.? 4. For SSD upgrade, do you transfer data prior to swapping out and how is that done? Same question for the HDD. And again, any BIOS settings need to be updated/modified?   Thanks!
Aurora R10, new to upgrading