psu whining

So when I just use my computer for normal stuff like watching YouTube and Twitch everything is fine, but when I start playing any game you can just hear the whine sometimes super loud, I’ve heard people say this means to get a new power supply but I bought the parts and built this pc just 7...

Hello again guyz...... I need a ssd for my pc build... I can't buy the one i wanted..... cause my local distributors only have wd Green and adata ssd's.... Should i go for adata su800 128gb....are those ssd's good? P.S.- prices on Amazon are high compared to retail market...