Memory Upgrade Help

AlexAlex2017

Prominent
Feb 15, 2017
2
0
510
Hello!
I need to upgrade my ram to at least 8gb cause i can't play anymore my favorite game (Rust).
My current specs:
Motherboard: GA-970A-UD3
CPU: AMD Phenom II X4 960T
RAM: 2 x 2GB Kingmax 1600MHz
m3fvom.png


I have the folowing alternatives: to get 1 stick 4GB; to get 2 x 4GB; or to get 1 stick 8GB;
I plan to use this PC just for 1 more year.
My question is which is the cheapest way and also the safest, i don't want to waste my tiny budget?

Thank you for helping!