How would I switch from quad to single?

[Martino1994]

Hello there,

I am simply wondering how I can go about switching from quad to single rails?

PSU: http://www.ebuyer.com/479894-evga-supernova-nex-750w-fully-modular-80-gold-power-supply-120-pg-0750-gr

 

[radekmm]

Don't worry. There won't be any problems at all. Quad rails are just the 12v rail splitted in 4, and with a single rail all 12v power comes throu 1 rail

 

[Martino1994]

hmm really, but on the box its says the 12V rail is 20Amps four times???
so is it automatic or something? this isnt an area I am very knowledgable about in PSUs

 

[radekmm]

That means that every one of the 12v rails deliver a maximum of 20Amps per rail.

 

[Martino1994]

Ohhhhhhhhhh right haha so literally i just plug it in and everything is good? then whats the difference between quad and single and what are the benefits?

 

[radekmm]

The benefits of single rails are, if you got a really power hungry gpu, the quad rails won't deliver enough power for the gpu, becuase you will most probably use only 1 rail on the gpu and 12*20 is 240 and if your gpu consumes like 300w, it wont be enough for only one rail of the quad rails.

I am not really aware of any benefits from quad rail to single rail tbh

 

[Martino1994]

The benefits of single rails are, if you got a really power hungry gpu, the quad rails won't deliver enough power for the gpu, becuase you will most probably use only 1 rail on the gpu and 12*20 is 240 and if your gpu consumes like 300w, it wont be enough for only one rail of the quad rails.

I am not really aware of any benefits from quad rail to single rail tbh

In that case, how do i tell the GPU to use all rails like how? do i switch????

 

[Martino1994]

Please explain lol is it automatic or manual? LOL
is it a matter of cabling? are there any additional cables i need?

 

[radekmm]

you can't tell the gpu to use all rails, because, for example, you got a video card, which consumes 300w, you take 2 6+2pin pcie cables and plug them into the gpu. the problem is, those 2 6+2pin cables are from 1 rail, and you got 3 rails which are not giving any power to the gpu. I'd just recomment going with an single or dual rail PSU tbh

 

[Martino1994]

you can't tell the gpu to use all rails, because, for example, you got a video card, which consumes 300w, you take 2 6+2pin pcie cables and plug them into the gpu. the problem is, those 2 6+2pin cables are from 1 rail, and you got 3 rails which are not giving any power to the gpu. I'd just recomment going with an single or dual rail PSU tbh

Are u saying I am fucked like I thought they worked together and with the current PSU how would I rig it to work?
The video card I want is a 780 ti

http://www.ebuyer.com/642890-zotac-gtx-780-ti-oc-3gb-gddr5-dual-dvi-hdmi-displayport-pci-e-zt-70506-10p?utm_source=google&utm_medium=products&gclid=CjkKEQjw5-OdBRDW3ceD9fL0r4QBEiQAW7htXSo4yb2Puy0DRyZeuyWWXYwrgE27FAv7Ksf8xzlM6q7w_wcB

 

[radekmm]

well the only thing you could possibly do is, take 1 6+2pin cable from one rail and another 6+2pin cable from another rail. then it should work perfectly fine 😉

 

[Martino1994]

would the rails be each of the female connectors on the PSU labeled VGA?

 

[radekmm]

I just checked the 780ti's power consumption. it's 250w. it will be perfectly fine with 240w, so you can safely use quad rails

 

[Martino1994]

I just checked the 780ti's power consumption. it's 250w. it will be perfectly fine with 240w, so you can safely use quad rails

http://www.ebuyer.com/642890-zotac-gtx-780-ti-oc-3gb-gddr5-dual-dvi-hdmi-displayport-pci-e-zt-70506-10p?utm_source=google&utm_medium=products&gclid=CjkKEQjw5-OdBRDW3ceD9fL0r4QBEiQAW7htXSo4yb2Puy0DRyZeuyWWXYwrgE27FAv7Ksf8xzlM6q7w_wcB

would it be fine with the above version since its overclocked? and also wouldnt i need to use all the VGA slots (on the PSU) to get the 60AMPS from all the 20AMP rails?

 

[radekmm]

The overclocked one just has a few more watts. nothing to be afraid of

to you question, in theory, yes you would need to do that, but you can't practically do that, because the gpu doesn't have 4 6/8 pin connectors to plug in those cables. but 40amps on 12v is more that enough for the 780ti

 

[Martino1994]

The overclocked one just has a few more watts. nothing to be afraid of

to you question, in theory, yes you would need to do that, but you can't practically do that, because the gpu doesn't have 4 6/8 pin connectors to plug in those cables. but 40amps on 12v is more that enough for the 780ti

good so i am all good to go?
and my psu is all good? and no more cables needed?

for the sake of the public how many amps does the 780 ti need?

 

[radekmm]

you are good to go, there's nothing to worry about 😉

 

[Martino1994]

you are good to go, there's nothing to worry about 😉

I hope so haha i will let u know if i have any problems 😀