2 or 3 sticks of ram?

[999moon9999]

I already have 2 8gb sticks of ram running in dual channel. I have an 8gb stick lying around so I was wondering if it would be wise to stick with the two sticks or to add the third one?
Thanks..

 

[SkyNetRising]

Does the software you use require more than 16GB of ram?
If not, then there's no benefit of having more ram.

Also - you'll loose dual channel operation and there are possible ram compatibility problems, when adding another ram module (not from same kit).