18 XPG SPECTRIX D50 Xtreme DDR4-5000 MHz CL19 2x8 GB Review by Nate, on Mar 18th, 2021, in Memory. Manufacturer: XPG A Closer Look » Packaging The XPG SPECTRIX D50 Xtreme features a metallic red box with a frontal shot of a D50 stick on front. Inside the box, the sticks are held in high density foam. Along with the two sticks, you get a microfiber cloth for cleaning.