Question help with gpu and ystem, problems

NotMelvin

Prominent
Dec 9, 2021
16
1
515
intel i3 2100
4gb ram
amd hd 7470 1gb gpu
250w psu

i recently bought an amd r5 340x 2gb gpu and when i put it into my motherboard all my games ran slower and some games didnt even load or open.
what could be the problem and also what can i do to my setup to upgrade it?

some websites hae said that a 4BG card would run better but i find that hard to belive?

why is it that my 1gb card can do csgo at 90-120 fps but the 2gb card does like 20-50 fps
 
what would be the best gpu for me to have with my cpu, im going to buy 2x8gb ram sticks and i will eventually get a new psu too, but id like to know what would be the best one for me to run with my i3 2100
thanks for the answers so far!
already learned a somthing new about the ddr3/5
 
So if I keep my i3 2100 on my motherboard and get a new psu with a 4gb gpu that should be okay? Aswel as upgrading my ram, I don't want ultra settings on new games, I just want a casual 30fps low setting on games from like 2017