Ram for super old I 7 4770k

[413x]

Wanting to go to 16gb (which I thought I had!) ram

Not planning on a new system for some time (if ever) with prices like they are.

Not even sure what's available. Or if I need to look used?

 

[413x]

What do you have now? Will help with what's best to do next.

I don't even know.
I have 4gb*2 sticks of something. I'll have to get the case opened up.

https://www.overclockers.co.uk/ball...channel-kit-blt2cp8g3d1608dt2t-my-165-cr.html

Believe it might be the above (in 2*4gb)
Crucial ballistix