You'll be able to play league, but idk about valorant.
Valorant is infact cpu demadning, i have a i3 3240 paired with a R9 380 and im not lying when im saying that my fps sometimes dips below 60fps, i ussually get 90-100fps on comp settings/ 1080p.
For how much can you get a 750Ti for in your country?
This is noted. Thank you for you input. May I know if you have any references for the compatibility of the GPU and motherboard? Just in case I need to prove that the GPU was compatible with the motherboard if my order when in hand does not work.