Question PC keeps rebooting. Don't know if it's PSU or GPU

[hj1999]

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[Lutfij]

Welcome to the forums, newcomer!

Ever since I upgraded my CPU about a year ago I've been having constant crashing issues.
What processor were you on prior to the upgrade? How are you cooling your processor?
+
Besides the CPU, I already swapped out my SSD and my motherboard.
Did you reinstall the OS? If not, that's your problem.

Specs: Asus Tuf b550 Wifi II
BIOS version for your motherboard?

Evga 650w 80 plus Gold
EVGA have a number of 650W 80+ Gold rated units, which one do you have?

Also surely 650W is more than fine for my specs?
A PSU from 2017 will not output the same amount of power after 8 years. Just thought you should be informed of that.

I am leaning more towards the PSU being the problem because it's older but at this point I have no idea, and I definitely don't have the money to simply swap out both components.
Source(borrow, not buy) a reliably built PSU that can deliver 750W of power to the entire system, from a friend or neighbor in order to rule out your PSU being the root cause of the issue.

 

[hj1999]

Welcome to the forums, newcomer!

Ever since I upgraded my CPU about a year ago I've been having constant crashing issues.
What processor were you on prior to the upgrade? How are you cooling your processor?
+
Besides the CPU, I already swapped out my SSD and my motherboard.
Did you reinstall the OS? If not, that's your problem.

Specs: Asus Tuf b550 Wifi II
BIOS version for your motherboard?

Evga 650w 80 plus Gold
EVGA have a number of 650W 80+ Gold rated units, which one do you have?

Also surely 650W is more than fine for my specs?
A PSU from 2017 will not output the same amount of power after 8 years. Just thought you should be informed of that.

I am leaning more towards the PSU being the problem because it's older but at this point I have no idea, and I definitely don't have the money to simply swap out both components.
Source(borrow, not buy) a reliably built PSU that can deliver 750W of power to the entire system, from a friend or neighbor in order to rule out your PSU being the root cause of the issue.

That's the thing, I don't really have any access to spare parts. No one I know has a gaming PC.

How many watts should I be looking at? Is 650 still fine or do I buy something higher? Tried many of those websites that tell you how much you need and the values differed a lot, though none of them were too high