Install in same color slots, preferably two white slots for dual channel. DIMM 1 2 are the two white slots. [IMAGE]  
  [IMAGE]   I’m gonna install 2 sticks of 8gb for dual channel? However there is 4 slots and idk which two I should install it in, there is 2 black and 2 white and they are all labeled 1,2,3,4. Which slot do I install it in for best dual channel experience?
Dell Optiplex 7010 ram slots