Destrolliex1572

I already have 1x8 gb of ram . The cheapest 8gb ram i can find here is 60$ Edit: i have a b350m motherboard with only 2 ram slots

I dont have the budget availiable to get both . After this upgrade (if i get ram) i will have to wait 4 months till i get enough money to get the 570

I live in turkey and i just have enough to get some corsair vengence ram 2400mhz. if go dual channel ill definetly oc though

I have a 1050ti , ryzen 1300x and single channel 8gb of ram . I was thinking of geting a rx 570 but would be getting 8gb more ram be better since i have a ryzen cpu . What would be the best option here?