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What are +12 V1, V2, V3... on a PSU?

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  • GPUs
  • Components
  • PSU
Last response: in Components
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September 26, 2014 1:23:24 PM

Now i know that they are used to run the gpu but im wondering if they adding to one another, for example if there are +12 V1, V2, V3 and V4 and they are all +18A (one that im considering to buy), do they give out 72A total or what?

More about : psu

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September 26, 2014 1:29:26 PM

Yes, those are known as rails. Basically the supply has 4 independent circuits for delivering power. This is not ideal. Single rail designs are easier to manage.

If you do get one. Generally the CPU/Motherboard will be on one rail. Peripherals on another, and your GPU on the remaining two. As long as you evenly distribute and/or lay out everything you should be fine.

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September 26, 2014 1:29:55 PM

It just means there are multiple rails. I personally prefer single rail PSUs but theres nothing particularly better or worse between the two. & yes they give out a total of around what they add up to
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September 26, 2014 3:47:12 PM

so it gives a total of 72A on it?
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September 27, 2014 5:06:13 PM

Yes.
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September 27, 2014 5:20:46 PM

Wrong ^
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September 27, 2014 5:37:45 PM

SR-71 Blackbird said:
Wrong ^


Why?
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September 27, 2014 5:39:12 PM

You just don't add the rails together , that's a false statement.
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