Confused about my current PowerSupply

[spickle]

Hey guys and gals. I am wondering if someone could help me understand if my currently Powersupply https://www.newegg.com/corsair-tx-m-series-tx750m-750w/p/N82E16817139208?Item=N82E16817139208 PCI express cables to power https://www.newegg.com/evga-geforce-rtx-3080-12g-p5-4877-kl/p/N82E16814487553?Item=N82E16814487553 I see this video card has 3 8pin PCI cables. I am not sure if my current Power supply has enough of these or I can use the other connector ports? 

I am going to be upgrading the rest of my PC this summer, and was going to keep my current Power supply since it has a 7year warranty. Got to love Corsair for their long warranties.

This PC was built in 2018 and im upgrading MB/CPU/MEM/HD later. Im trying to get out of these crappy low end graphic cards like RX590x and get some MOOOORE power. If anyone could explain what I should be looking at it would be helpful.

 

Thanks again. 

[c-attack]

You are going to need a new PSU. You only have 2 PCI cables. Your new gpu needs 3 and unlike some GPUs it will utilize all three cables. I regularly can pull 440W from mine and it is divided along all three plus the PCI-E slot.  No “6W on the 3rd cable for RGB lighting” on the FTW3 and you do not want to use a pigtail dual 6+2 for this. 
 

I don’t know what kind of power you need for the cpu side, but if the gpu is capable of 450W you need to be looking at 850-1000W PSUs. Most of those models should have considerably more sockets to accommodate system growth. 

Edited April 30 by c-attack