New
#11
Yes what I meant is that you should try to keep the sticks as closely matched as possible if you want to mix so that you can eliminate as many problems as possible otherwise you could run into an issue and it may be do to a whole list of problems. If you match the specs you should be able to mix them without a problem.
But like I said if you can afford to buy matching kits your much better off. If you can't afford to replace all your ram with matching kits then be sure to match the specs of the new ram with the specs of the existing as closely as you can.