Number of RAM sticks [duplicate]
So 2x4GB vs 1X8GB.
Assuming both 4GB and 8GB DIMMs have identical specs except for size:
- Iff (and only if) your motherboard supports dual channel, triple channel or quad channel memory access you may see up to 5% speed gains. This very much varies per application.
- 2 DIMMs use two sockets.
- If each 4GB DIMM uses as much power as a 8GB DIMM it would use twice the power (mostly in the order of a few Watts though).