Sudden issue with Gigabyte 3060TI OC

[melon310]

Hey, so to begin with.. I am not really sure if it's my GPU or PSU or anything but yesterday evening i was playing and was in game at league of legends, and suddenly my pc fans just got really loud and couldn't really tell which fan it was that made it loud and it also smells, like something is burning inside the PC like burning plastic or something that's melting inside the PC im just not sure what it is and performance wise seems fine but i didn't take the chance to leave the computer on any longer after that everything appeared and left it off. But I checked my MSI after burner and it seemed fine between 30-50degree with automatic fan speed, i am not sure where else to look because i am a really inexperienced in PC and quite a newbie, but my PSU seemed really hot after 5 minutes turning it off as i realized. my PSU is a Corsair CX 750 (Green type) But the thing that bothers me the most that its unusally loud and smells and don't know where it direclty comes from, but i can smell inside the cabinet and i think its from either motherboard or GPU, because i have a medium sized cabinet "Svive Luna S100 W midi tower" where it's two own rooms for a motherboard and then PSU with 2 disk slots at the bottom of the cabinet, couldn't smell anything from the PSU. BUt far as i know i've read something about my PSU its bad with high end components but couldn't really tell for sure so i turned here to have better answers.
My GPU: Gigabyte Geforce 3060TI GAMING OC
PSU: Corsair CX 750
Ram:16gb
Samsung 870 QVO 1TB SSD

I've had this computer for like close to a year now and only thing i've upgraded was from:
GPU: asus gtx 1650 dual > 3060TI Gaming OC
RAM: 8GB hyperx fury ddr4 2666mhz 8gb > 16GB all 4 the same RAMs (4x4GB)
DISK: 1TB HDD > 1TB SSD
And i upgraded only these things for like 2 weeks ago only.
I am not sure what the problem is here, any answers would be appreciated.

 

[Gwenved]

Hi Melon310, I had a bit the same with my new Gigabyte RTX 3070 Eagle OC at the beginning, let say the first week after big game session so maybe it's "natural" ?
From this timet it disappeared so maybe it's due to some fabric process?
My case is a mid tower too.

 

[melon310]

Hi Melon310, I had a bit the same with my new Gigabyte RTX 3070 Eagle OC at the beginning, let say the first week after big game session so maybe it's "natural" ?
From this timet it disappeared so maybe it's due to some fabric process?
My case is a mid tower too.

I ordered new PSU now. Corsair RM650W.. What's urs?

EDIT: i figured out after hours of processing and came to the conclusion it was my old PSU and it smelled from there, made my motherboard smell too i think(?)
I didn't have any black screens i just paid attention to the warning signs as burning smell from the computer and loud fan noises

 

[Gmr_Chick]

The CX line of Corsair PSUs are notorious for being low quality units, so there's a possibility something inside of it failed, thus the smell.

And, no, Gwenved, there's never supposed to be smells, especially the burning kind, coming from your PC. That...generally indicates a problem somewhere...

 

[Gwenved]

The CX line of Corsair PSUs are notorious for being low quality units, so there's a possibility something inside of it failed, thus the smell.

And, no, Gwenved, there's never supposed to be smells, especially the burning kind, coming from your PC. That...generally indicates a problem somewhere...

Well, I had it and not now doing nothing in my tower....

 

[Anymal]

Gigabyte? Case closed? Case closed!

 

[melon310]

The CX line of Corsair PSUs are notorious for being low quality units, so there's a possibility something inside of it failed, thus the smell.

And, no, Gwenved, there's never supposed to be smells, especially the burning kind, coming from your PC. That...generally indicates a problem somewhere...

MIght just be me and it was all the time PSU smell was spreading inside the cabinet.. forget about anythingelse lol