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[Official] NVIDIA GTX 780 Owner's Club - Page 1839

post #18381 of 24915
Quote:
Originally Posted by OccamRazor View Post

No, multi rail has the amperage split through the rails and each rail has a limit, you pass that limit and OCP kicks in and shuts down the PSU! wink.gif
You can hook your cards to the 45A rails and you will be fine! smile.gif


Cheers

Ed

(Team skyn3t)

That's basically what I was saying. The amperes are splitted evenly through the rails. smile.gif

Just to clearify this: Just because the strongest 12v rail your PSU has is say 22A does NOT mean you cannot power a GTX 780 with it. The combined output is what matters thumb.gif

Take a look here:

http://www.overclock.net/t/761202/single-rail-vs-multi-rail-explained

He explains it perfectly and he confirms my statements: You have ABSOLUTELY NO DISADVANTAGE when using Mutli Rail over Single Rail. But you do have a small ADVANTAGE namely the better protection. smile.gif
Quote:
Originally Posted by shilka View Post

Multi rail units are fine as long as you are aware and keep track of how many amps you got on your rails and what you are using/drawing

Most users dont know this so they can and often get in trouble when they hit the limit and trip OCP

Actually I would say it is the other way around. If you're using Single Rail you have to be carefull and watch out how much Amperes are drawn. Because if you're operating on the PSU limits or even exceed them and you happen to have a short curcuit say goodbye to your components. That would not happen with a proper implemented Mulit Rail PSU thumb.gif
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post #18382 of 24915
psu mmm

http://www.youtube.com/watch?v=ajiN9aVOv4A#t=19

http://www.overclock3d.net/articles/power_supply/how_many_watts_do_you_actually_need/1

salu2

Ed !!
Edited by Chomuco - 3/19/14 at 5:02am
post #18383 of 24915
Quote:
Originally Posted by jleslie246 View Post

Is this the same as Riva Tuner? I use Riva. It has far more options than what I see with D3D.

Yes. It's just a simple tool for doing exactly what it's called. It's made by the Rivatuner team I believe.
post #18384 of 24915
I know its off topic, but anyone else having a slight whining sound coming from the card when in use? Comes and goes.
post #18385 of 24915
Quote:
Originally Posted by MitchManix View Post

I know its off topic, but anyone else having a slight whining sound coming from the card when in use? Comes and goes.

It's probably coil whine...completely normal but annoying if you're sensitive to sound like that. I only get it when I'm benching and the frames are ridiculously high. Wear headphones and turn them up lol.
post #18386 of 24915
@shilka

Sorry to bother you, but you may have missed my follow-up question here:
http://www.overclock.net/t/1393791/official-nvidia-gtx-780-owners-club/18360#post_21968069
post #18387 of 24915
Quote:
Originally Posted by ChromeD2 View Post

@shilka

Sorry to bother you, but you may have missed my follow-up question here:
http://www.overclock.net/t/1393791/official-nvidia-gtx-780-owners-club/18360#post_21968069

Trying to resist going watercooling "too soon" in regard to information, but it's not easy! ><</div>

You dont need a new PSU did i not say already?
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post #18388 of 24915
Quote:
Originally Posted by shilka View Post

You dont need a new PSU did i not say already?

Aye, but I was unsure if you were counting in the 1.212v on the 780 and the higher (4.5-4.8GHz) on the 8350 (slight overvolt, nothing major).

In case you did, I'm sorry to have bothered you and will get on the watercooling train asap! Should be a fun ride,
post #18389 of 24915
Quote:
Originally Posted by ChromeD2 View Post

Aye, but I was unsure if you were counting in the 1.212v on the 780 and the higher (4.5-4.8GHz) on the 8350 (slight overvolt, nothing major).

In case you did, I'm sorry to have bothered you and will get on the watercooling train asap! Should be a fun ride,

850 watts should cover everything you want as long as you have one card

Even if you push the PSU it has OCP and all the other failsafes so worst case is the PSU shuts off it wont blow up
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post #18390 of 24915
Quote:
Originally Posted by shilka View Post

850 watts should cover everything you want as long as you have one card

Even if you push the PSU it has OCP and all the other failsafes so worst case is the PSU shuts off it wont blow up

Isn't it a 650W unit, though? Or is it rated at 650 but can handle quite a bit more due to it's build quality?
I'll definitly see if it gets unstable/shuts down then, hope it handles it fine!

Sorry for the over-reach on questions and thanks for your patience, mate!
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