Power Supply to Support Graphic Card

[chaot88xd]

I want to built my own pc , but i dont what power supply i need to support GTX1080ti and two monitor. Did i need at least 1500W power supply ???

 

[marksavio]

no you do not. your monitors are self-powered. if you only have 2-6 SATA drives. ur 1080ti. a z370 board at most. you only need a 550W~750W PSU. depending whats available in your local shop.

 

[SkyNetRising]

600W is minimum recommended PSU wattage for system with GTX 1080 ti.
If you're planning to OC, then add some power reserve.

 

[geofelt]

Here is a chart as to what you need for various graphics cards.
http://www.realhardtechx.com/index_archivos/Page362.htm
600w for a GTX1080ti.

This does not change regardless of the number of monitors attached to the graphics card.

I have no problem overprovisioning a PSU a bit. Say 20%.
It will allow for a stronger future graphics card upgrade.
It will run cooler, quieter, and more efficiently in the middle third of it's range.
A PSU will only use the wattage demanded of it, regardless of it's max capability.

Of more importance is that you buy a good quality PSU.
Pick a tier 1 or 2 unit from a list such as this:
http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html