mixed sizes of memory

shanyin

Reputable
Aug 7, 2015
145
0
4,690
Hi. I have 4 sticks of memory in my 4 slots on my motherboard. Two 2gb sticks, one 4 gb and one 8gb. The 2x2 are corsair ddr3 1600 and the 2 other ones are Ballistix 1600 speed.

I'm wondering if I should just get two 8 gb sticks that are both balistix, which might be an option if I can take back my 4 gb stick that I bought today.

Is there a certain order that the RAM should be in on my motherboard? (p55a ud3p). I tried a bunch of different arrangements and finally got the computer to recognize it.
 

iamacow

Admirable
If you mix different dimm sizes it will revert to single channel. That or crash constantly. My laptop just goes into single channel since I have a 4gb and 8GB dimm. I ended up just buying a second 8GB dimm to get dual channel running again.