XMP overclocking is not supported on ANY XPS 8900 8910 8920 8930 8940. Never has been. [URL] When you install memory in a system, there is a set of standardized speeds/timings your memory will run at.This standard is called JEDEC.This is why you see DDR4 memory speeds like DDR4-2133, DDR4-2400, DDR4-2666, DDR4-2933. Unlike JEDEC, XMP speeds and voltage are higher,When you purchase XMP compatible memory,you must have an XMP compatible motherboard and unlocked CPUXMP must be manually enabled in the BIOS settings. [IMAGE]  
i took out the original ram and put in 2 sticks of crucial ram thinking of going 2x8, but that ram ran at 2133so i took it out and found out I should only buy from dell? Anyway I put back the single 8 ram stick, dell sold this outlet system as 3200 speed and it showed 3200 speed,after bios update and putting back this 1 stick in, it is now running at 2666 I dont see anything in bios that I can change to get it back to 3200? does xps even support 3200?what is the best way for me to add another 8 gig stick, and how do i control the speed of these things thanks
XPS 8940, 3200MHz ram running at 2666MHz?