How many watz?

[Adam_1992]

So I built this pc awhile ago and recently switched Gpu's trying to figure out if i should lower my power supply

Nvidia EVGA Geforce GTX 1080ti 11gb (former 2 980s in sli)

Intel core i7-6700k

Windows 10 64bit

Asus Hero viii motherboard

4 sticks of 8,192mb pny ddr4 @ 2,132mhz

2 Samsung Ssd' s in raid 0

A corsair water cooled radiator for cpu

And a 1000w corsair power supply

Looking to overclock as well but I'm still new to pc building.

 

[Barty1884]

Which "1000w Corsair power supply"?

Regardless, that system will run perfectly well on a quality 500W, with 550W giving you ample headroom for overclocking.

91W CPU, 250W GPU, ~50W for the balance. That's <400W. Generally, you want to keep your PSU running in the 50-75% of it's capacity at max load to see the efficiency gains quoted by the 80+ 'tiers'. Quality PSUs can run >90% of their rated capacity in the long term, but most people err on the side of caution.

Ultimately, it's more about the "quality" than the wattage.

https://www.ebay.co.uk/sch/i.html?https://pcpartpicker.com/product/DPCwrH/seasonic-power-supply-ssr550rm
https://pcpartpicker.com/product/FdRFf7/corsair-cx-2017-550w-80-bronze-certified-atx-power-supply-cp-9020121-na
https://pcpartpicker.com/product/gYMFf7/seasonic-power-supply-s12g550

Are all solid options.

The 1000w Corsair PSU will still 'work', just not at the efficiency that it could.

 

[Adam_1992]

Honestly don't remember which would have to open it up but thanks I'll definitely try and swap that out asap.