Power supply problem, need suggestions

Hi guys, it's been a little while since I posted in here. My build has been working great for 3 years and suddenly has begun to have issues. Firstly, I don't know if it is entirely the PSU being the problem, it is just something I suspect. None of my components are overclocked and my GPU is underclocked.

A bit more specifics; I've had a Corsair HX1000 for quite some time, ~10 years. It has done everything great, until I decided to watercool my GPU. Now, when gaming, it heats up very hot (almost too hot to touch) and then my computer will crash to automatic restart.

Reason why I think it is the PSU: It didn't crash or get too hot until I watercooled the GPU. I think the extra frames to my ElGato USB 3.0 capture device + the 144hz monitor that I have is causing my GPU to work overtime and is sucking the juice from the PSU. I have 2x 8gb sticks of RGB ram (forgot brand), 2 SSDs, 2 SATA 7.2k hard disks, 2 M.2 SSDs, 1 pump, 1 CD+DVD-RW, 2x 120 fans, 3x 140 RGB fans, an i3-4330 under water, and a GTX 1080 under water.

Any ideas? Suggestions for a cool running PSU, or do I need more watts? Thanks guys!

you have an i3 4330 and a GTX 1080 and a 1000W PSU?

if your PSU is the cause of your issues it's not because of lack of watts, it's because it's failing. your system does not use more than 500W and likely is under 400W.

even if your PSU is 10 years old and it's not failing it's still not a bad idea to replace it.

Yah, that's what I figured as well but I'm thinking that the current is very high through my motherboard which is causing the PSU to overheat. I just want to make sure I get a PSU that is able to handle the current and not overheat, making me have to replace it in 3 years or so. I may try just a Corsair RMX 850 to see if it handle the load well first.

The Corsair HX1000 has a known and long history for going bad when they get old i have seen many of them go bad including one i had myself a long time ago so replace your PSU
As for wattage a 650 watt could power your PC with no problems so an 850 watt is overkill

Edit: as for the RMx thats a quiet PSU yes but it also runs pretty hot because of the relaxed hybrid fan mode which by the way you cant turn off on the RMx

why do you think your system "draws more current" than any other system?

if your PSU is failing it's because it's 10 years old, not because your system has some niche power requirement.

your PSU is getting hot because it's failing and it's becoming inefficient, and inefficiency comes out of PSUs in the form of heat.

10 years is actually very long for a HX1000 most of them go bad after only half that time so you are very lucky it has even lasted that long

I haven't ran anything super-extensive on it until I got the GTX 1080, but even then it didn't have any issues. It was only after watercooling and pushing 144 + 60 frames did I begin to notice any kind of stability issues, but like Pook is saying, I'm sure it's because it's becoming near the end of its life cycle and needs to be replaced. I was just thinking that after over 200 frames (only after watercooling) did it become a a current issue since the PSU probably began having to work overtime and possibly cause excessive heat on the motherboard as well, but both of those are only a possibility.

Its a PSU from 2008 so even if it was working and did not have a history of going bad you should still replace it
Its not even a real 1000 watt unit its two 500 watt units slapped together which might be why so many of them go bad

It was not bad for its time but today its completely obsolete