Hi all,
i read this article about power supplies yesterday :
Basically, it says that the power is supplied at 3 different voltages ("rails") : +3.3V, +5V, and +12V. And that it's important.
Each component use one rail or the other (or several of them). For example, old CPUs will tend to use the +5V rail, while newer ones will more often use +12V power.
It's advised in this article to find the precise current/power consumption of a component for each rail, in order to choose a PSU that will deliver enough current/power on each of the rails, for your build.
For example a i7-3770K processor uses 77W on the +12V rail (that is, 6.5A current for those who know their electronics basics : current = power / voltage).
And it was written in this article that motherboards tend to use a little bit of the 3 rails. They give the example of a motherboard which uses
* 10W on the +3V rail
* 10W on the +5V rail
* 3.6W on the +12V rail
My question is :
where can i find such a precise information, for each component ?
For example i want to get an Asus Maximus V GENE motherboard, but i couldn't find the information for this component. I searched on Asus website, and Google, but it didn't seem to be anywhere.
Are there websites where such information would be stored for most components ?
I'm guessing that the information might be written on the user manual...but i don't want to buy all my components before the PSU, as i would like to test them as soon as they arrive, to have the possibility to return them if one of them didn't work.
Another possibility is to use the current consumption examples from this article, and "imagine" that my components are the same...and finally add 50%, to be safe. But that's not what i call "precise", nor "really safe".
Edit : after looking randomly in many reviews, i randomly found here : http://www.guru3d.com/article/asus-maximus-v-gene-motherboard-review/8
a snapshot which might indicate that this motherboard uses
- 3A on the +3.3V rail
- 5A on the +5V rail (it seems quite high, compared to the 2A in the first article...but it's a high end motherboard, so it seems possible)
- maybe... 1 or 1.1A on the +12V rail (i don't know where to read).
It's still not a reliable source of information...
any ideas, people ?
i read this article about power supplies yesterday :
Basically, it says that the power is supplied at 3 different voltages ("rails") : +3.3V, +5V, and +12V. And that it's important.
Each component use one rail or the other (or several of them). For example, old CPUs will tend to use the +5V rail, while newer ones will more often use +12V power.
It's advised in this article to find the precise current/power consumption of a component for each rail, in order to choose a PSU that will deliver enough current/power on each of the rails, for your build.
For example a i7-3770K processor uses 77W on the +12V rail (that is, 6.5A current for those who know their electronics basics : current = power / voltage).
And it was written in this article that motherboards tend to use a little bit of the 3 rails. They give the example of a motherboard which uses
* 10W on the +3V rail
* 10W on the +5V rail
* 3.6W on the +12V rail
My question is :
where can i find such a precise information, for each component ?
For example i want to get an Asus Maximus V GENE motherboard, but i couldn't find the information for this component. I searched on Asus website, and Google, but it didn't seem to be anywhere.
Are there websites where such information would be stored for most components ?
I'm guessing that the information might be written on the user manual...but i don't want to buy all my components before the PSU, as i would like to test them as soon as they arrive, to have the possibility to return them if one of them didn't work.
Another possibility is to use the current consumption examples from this article, and "imagine" that my components are the same...and finally add 50%, to be safe. But that's not what i call "precise", nor "really safe".
Edit : after looking randomly in many reviews, i randomly found here : http://www.guru3d.com/article/asus-maximus-v-gene-motherboard-review/8
a snapshot which might indicate that this motherboard uses
- 3A on the +3.3V rail
- 5A on the +5V rail (it seems quite high, compared to the 2A in the first article...but it's a high end motherboard, so it seems possible)
- maybe... 1 or 1.1A on the +12V rail (i don't know where to read).
It's still not a reliable source of information...
any ideas, people ?
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