Solution
Twoboxer
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- Jan 21, 2008
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It is technically possible, but not recommended. If you have to ask the question, you will likely be unable to ensure the common grounds required to keep one psu from frying the other's parts.
There's just too much danger for me to instruct or recommend this approach.
There's just too much danger for me to instruct or recommend this approach.
pjmelect
Splendid
- Jul 14, 2006
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It can be done and I have seen it done but I do not recommend it because of the dangers of floating earths and conflicting voltages on power supply rails. It would be much better to get a single larger power supply. In short don’t do it.
well why not? The sata data cable does not give power so the two power packs would not be in parralel where as the motherboard gives power throught pci express connector to the vga card so in this case the two power supplies would be in parallel.
Twoboxer
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- Jan 21, 2008
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You see, you are only concerned about power. That is neither the sole nor the major issue. And the drives are connected to the motherboard, along with your vid card etc.
And that's as far as we are going to go technically lol. It will not work, they are not isolated.
And that's as far as we are going to go technically lol. It will not work, they are not isolated.
A hard disk drive Or optical disk drive can be thought of as a device that sends and receives signals.
Eg:- Consider a case where a CD player is connected to a amplifier. We can power the two devices using a single source or two power sources. (In this case the power sources are isolated)
The same applies to the motherboard and hard disk drive scenario.
Hey check out the sata data specification. No power is given to the hard disk throught the data cable.
http://en.wikipedia.org/wiki/Serial_ATA
Eg:- Consider a case where a CD player is connected to a amplifier. We can power the two devices using a single source or two power sources. (In this case the power sources are isolated)
The same applies to the motherboard and hard disk drive scenario.
Hey check out the sata data specification. No power is given to the hard disk throught the data cable.
http://en.wikipedia.org/wiki/Serial_ATA
jaguarmatt
Distinguished
- Jul 29, 2010
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If it doesn't work, why would there be cases with slots for mutlitple power supplies........
Read this forum: http://www.tomshardware.com/forum/249850-28-dual-power-supply-setup
EDIT: Look at what romk said about 3/4 of the way down the page, that's what you should look at.
Read this forum: http://www.tomshardware.com/forum/249850-28-dual-power-supply-setup
EDIT: Look at what romk said about 3/4 of the way down the page, that's what you should look at.
Twoboxer
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Note that romk lays out some very specific additional problems, but has yet to mention the most dangerous problem.
There is still more going on here, and the practice is not recommended for amateurs. There is another thread showing the after-fire photo that can result.
There is still more going on here, and the practice is not recommended for amateurs. There is another thread showing the after-fire photo that can result.
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