water cooling my pc

[Gary Brigman]

Hi i was just wondering what PSU should I get for an I5 4670k, two gtx 980's in a corsair 350D. I have a friend that he said I should get 1000w PSU but I have ask around heard from people that 750 or 850w would be fine. So my question is 750,850, or 1000w PSU are 1000w is overkill for this setup? And should i get a kit with a extra rad or should the get the parts and use hardline?

 

[BigBadBeef]

1000W is a safe bet, and if you can afford 980SLi then you can definetely afford 1000W Gold quality power supply. And it will not scream as much when under stress. I had to buy a replacement power supply that is the bare minimum of what my system needs and the fan screams like a banshee when under load.

 

[geofelt]

750w should do it.
http://www.realhardtechx.com/index_archivos/Page362.htm

A normal GTX980 needs 2 6 pin pcie power leads at 75w max each. The slot will deliver 75w, making a max draw of 225w per card, or 450w total.
That leaves plenty for your cpu and other things.

 

[BigBadBeef]

750w should do it.
http://www.realhardtechx.com/index_archivos/Page362.htm

A normal GTX980 needs 2 6 pin pcie power leads at 75w max each. The slot will deliver 75w, making a max draw of 225w per card, or 450w total.
That leaves plenty for your cpu and other things.

Why are you such a minimalist? Don't you know how much noise will his system make? After paying such a hefty price, he doesn't need to get stingy on the wattage.

 

[geofelt]

I have no problem overprovisioning a PSU a bit. Say 20%.
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.

 

[johnnyb105]

Never skimp on a high end system you could spend more then you saved in the end if the Power supply fails.

 

[bootcher]

A single gtx 980 requires 30 amps, so make sure your PSU can provide that. Total wattage requirement would be at minimum 750 watt. I would choose an excellent PSU of 750 or more of gold certification that fits in your price range.
If you are planning to overclock you will probably need more watts.