How many watts i need for this PC?

[JohnRiese]

This are the components:

Case: CM Storm Scout 2 Advanced

Motherboard: Asus Maximus VI Formula

CPU: Intel core i7 4770k

RAM: Corsair Vengeance Pro 16GB (2x8GB) 1866MHz

Optical Drive: Asus DVD-RW

Storage: Seagate Barracuda 2TB, Samsung SSD 120GB

Graphic Card: Asus GTX 780 DirectCU2 OC 3GB

I was thinking to take the Corsair AX760i, but i don't if i need more watts, or less.

Thanks for your answer!

[ZetZet]

upwards from 500. ~600-700w sweetspot. ax760i will be plenty.

[seiny]

You could go with a 650watt should give you enough room for overclocking as well.

 

Edit: That 760 should be enough if you went with 2 gpu's

[Guest]

A good 550W will be fine. If you plan on adding two cards then an 850W would be ideal. If you can get hold of a Superflower Leadex Gold this would be a cheaper alternative over the AXi. I also think the Seasonic made AX would be a better choice over the Flextronics made AXi.

[werto165]

[SeanAngelo]

650W is fine

[Guest]

Check this Youtube video out

 

[unses]

You could go with a 650watt should give you enough room for overclocking as well.

 

Edit: That 760 should be enough if you went with 2 gpu's

I agree on the 650W supply. Though won't a 750 a tiny bit low for two 780s? I've got SLI 770s with a 750W PSU and I think that's cutting it a little close

[skullbringer]

I agree on the 650W supply. Though won't a 750 a tiny bit low for two 780s? I've got SLI 770s with a 750W PSU and I think that's cutting it a little close

hes only running one 780

[unses]

hes only running one 780

I know, the post I quoted suggested running two on a 750W though

[skullbringer]

I know, the post I quoted suggested running two on a 750W though

ok, sorry. but actually two 780s wont consume more than 700W, so thats just fine

[unses]

ok, sorry. but actually two 780s wont consume more than 700W, so thats just fine

Thats okay then, the only reason I said that was because plenty of people have said i'm pushing it with my gpu-psu setup

[skullbringer]

Thats okay then, the only reason I said that was because plenty of people have said i'm pushing it with my gpu-psu setup

yeah, most people always go 100-200W over the actual sweetspot.

[unses]

yeah, most people always go 100-200W over the actual sweetspot.

Is it worse to go over? Or is it more beneficial to not have your PSU at full tilt alll the time?

[ruitti99]

Is it worse to go over? Or is it more beneficial to not have your PSU at full tilt alll the time?

The PSU will eventually last longer when it's on a lighter load

[unses]

The PSU will eventually last longer when it's on a lighter load

Thats what I thought . Thing is, does it actually make that much of a difference? Unless of course you're trying to run the same system for years and years on end

[piggykid1]

650 watt is way to go ask me if you want a specific power supply for 650 watts

[skullbringer]

Thats what I thought . Thing is, does it actually make that much of a difference? Unless of course you're trying to run the same system for years and years on end

not from my experience

[WoodenMarker]

Thats what I thought . Thing is, does it actually make that much of a difference? Unless of course you're trying to run the same system for years and years on end

Little difference. The system would easily run on a decent 550w. The 760w is overkill unless you were running sli.

[bbqsauce]

Is it worse to go over? Or is it more beneficial to not have your PSU at full tilt alll the time?

it's at peak efficiency around the middle range. check the specific psu you are looking at for the details.

for example the rm 750

of course the difference is within a few percentages usually.

[seiny]

I agree on the 650W supply. Though won't a 750 a tiny bit low for two 780s? I've got SLI 770s with a 750W PSU and I think that's cutting it a little close

Can also bump it up to 800 - 850

[WoodenMarker]

it's at peak efficiency around the middle range. check the specific psu you are looking at for the details.

for example the rm 750

of course the difference is within a few percentages usually.

Efficiency is generally worse below the peak than above it though. It would be better to get a psu just as big as you need since the system will likely spend most of its time not at load.

[seiny]

Little difference. The system would easily run on a decent 550w. The 760w is overkill unless you were running sli.

How do you know these things man?

[WoodenMarker]

How do you know these things man?

Research from benchmarks and experience. The internet helps.

[bbqsauce]

Efficiency is generally worse below the peak than above it though. It would be better to get a psu just as big as you need since the system will likely spend most of its time not at load.

thats true but since it's 80+ rated which means if it's between 20-50% load, it's not that bad isn't it?

aiming for idle/light use at around the 50% mark would be best i guess?