I am about to upgrade my DELL XPS 8900 and add 64GB memory to it, I have found that the montherboard of DELL XPS 8900 does support that kind of capacity.
However I have a hard time picking up the right RAM. DDR4 is supposed to be better than DDR3, but other factors seem to weigh in.
Like some examples shown below, DDR3 is not necessarily cheaper, and appear ECC is a plus factor too: #2, Kinston's DDR3 is more expensive than #1, DDR4 from Curcial, and the #3 is the most expensive, can ECC alone explain the price gap to #1? And do these difference translate into a perceptible performance difference?
From Crucial official site:
- Crucial 64GB Kit (4 x 16GB): DDR4 PC4-21300 • CL=19 • Dual Ranked • x8 based • Unbuffered • NON-ECC • DDR4-2666 • 1.2V • $567.99
- Kingston 64GB (4 x 16GB) 240-Pin DDR3 SDRAM ECC Registered DDR3 1600 (PC3 12800) Server Memory Model KVR16LR11D4K4/64 $736.53
- Crucial 64GB (4 x 16GB) 288-Pin DDR4 SDRAM ECC DDR4 2133 (PC4 17000) Server Memory Model CT4K16G4RFD4213 $806.91