8gb ram upgrades

Aug 18, 2018
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I'm currently building a new PC and was wondering if I buy 8gb of dual channel ram could I slowly upgrade it to 12gb (3x4) then to quad channel 16 gb?
Or should I just save up and get 16 gb dual channel.

One last thing, is there any big performance drop for quad vs dual channel?
 
Solution
You need a socket 20xx motherbd to get quad channel ram, otherwise you will have two banks of dual channel ram if you upgrade to fill all 4 slots.