josh1111156

What are the full system specs? 750w is most likely completely unneccasary.
 
Would take a look at the TX550M or TX650M. 
 
https://msy.com.au/corsair-tx650m-cp-9020132-au-650watt-80plus-gold-atx-semi-modular-power-supply-unit
https://msy.com.au/corsair-tx550m-cp-9020133-au-550watt-80plus-gold-atx-semi-modular-power-supply-unit

TDPs mean different things for Intel and AMD platforms and neither represents power draw properly.
 
Plus you most likely also have other components in your system, that draw power, besides CPU and GPU...

This is not how powerdraw works for systems.....
 
Nor is wattage the real concern when looking at PSUs.
Is this bought new? Or is it something you allready own?
 
What 750w PSU is this?
 

Any ATX power supply with a 8 pin EPS cpu power connector (or 4+4 cpu power connector) will work. This means pretty much any psu rated for 500w or higher.
 
The motherboard has a 8 pin EPS / 4+4 cpu connector and an additional 4 pin cpu connector, but this additional 4 pin cpu connector is optional and only really useful if you're into very serious overclocking, so it can be left aside, with no cable in it.
 
Unless you're gonna use 2 video cards, you're gonna have a really hard time getting a computer to consume more than 500w, so a power supply rated for 600w (or more) will be plenty and future proof.
Most configurations will use around 350w ( around 200w for video card, around 100-150w for cpu and everything else) when gaming.
 
Better go with a higher end/ higher quality power supply rated for lower wattage, instead of lower quality higher wattage.
Some suggestions:
SeaSonic FOCUS Gold 650 W 80+ Gold Certified Semi-modular ATX Power Supply (SSR-650FM) - PCPartPicker
Antec Earthwatts Gold Pro 650 W 80+ Gold Certified Semi-modular ATX Power Supply (EA650G Pro) - PCPartPicker
a bit cheaper but lower efficiency
EVGA BQ 600 W 80+ Bronze Certified Semi-modular ATX Power Supply (110-BQ-0600-K1) - PCPartPicker
SeaSonic S12III 650 W 80+ Bronze Certified ATX Power Supply (SSR-650GB3) - PCPartPicker

The motherboard on its own doesn't tell us enough on what PSU you need.
What is the rest of the system? Mainly CPU, GPU, case and drives.

Buy any Power Supply of you choice, i would pick something smaller then 750W and better quality then having lot a juice but lower quality, unless you want to run a 2080TI

nearly every PSU goes with the Motherboard but you have to know the TDP for: CPU, GPU. Then add the TDP's and look for a PSU with enough Watt.