New
#11
Yep well I never throw anything away myself and keep stuff like that for spares as you know once you throw things away you can bet your sweet life you will need them. Plus I live in a rural area so access to parts like that is nearly always by mail and you know how slow that can be.
Now again if were me if I were doing that and all the slots tested out ok would go for a 4x4GB setup simply because it increases the number of "channels" that the CPU can access for data to the RAM and back. But the choice is yours of course - just speaking out loud here