Upgrading my system, power supply question

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I can afford a psu, but I didn't want to spent more money, if it wasnt nessescarry...

And as far as I know the processor are better than ryzen 3? And I bought an upgrade package, which had those parts as an package, which I bought.

I had a little money to spend, and I was tired of always having budget parts. Yeah, my gpu arent that old, but upgrade for future I will do for sure.
I am running the sysmtem now, and having no problems. Would u say I still should get a new psu? As i've said. I can afford it, but I dont want to spend more money right now nor unplugg my whole system.

Are the new psu worth it? Will I have better perfomance?
Thanks for help.
 
Yes, Ryzen 7 is better than 3. But 3 is more than enough power to game. And about ~100-150 dollars cheaper.
The GPU could be better. You could get a Radeon R7 250, or maybe a GTX 1070. Wouldn't go higher than 1070 though.
The SSD is unnecessary. I found a 300GB 10,000 RPM HDD that was only 33 bucks a pop. OR you could get a small WD Black Performance Drive. Like this: https://www.serversupply.com/products/part_search/pid_lookup.asp?pid=115533&gclid=Cj0KCQjwjN7YBRCOARIsAFCb936-6Zz5Ob9WSxFbiYWtkGnr3alRnNL8KaIP3XVWjAqVnpbG_csur1IaAhIFEALw_wcB

You might be able to get away with the old PSU as long as you don't go crazy and stress the system out as much as you can. I've run a Core i5 760, GTX 460, 8GB DDR3, and dual hard drives for YEARS with a 500W PSU and never had any problems. But with THAT kind of stuff? You might want a 550W.