Is is possible to have 2 ATX PSUs linked together so that they can both turn on at the same time? I have a friend who wants to have a dedicated PSUs for his 12 hard drives and another for the rest of his computer. The reason he wants to do this is because his 550W doesn't seem to be powering the hdds well.
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Dual PSUs how?
- Thread starter MYST1K
- Start date
as a side note, yes. Two pins in the ATX header correspond to the power switch...I forget which ones, but a quick google should tell you. Splice wires from your existing power switch over to the corresponding pins on the ATX header of the second power supply and VOILA!
On a side note, there are better ways to get 2TB, most of them expensive, though.
On a side note, there are better ways to get 2TB, most of them expensive, though.
You can't just hook your power switch up to the second power supply directly. The easiest way is to just link the green wires from both power supplies together. When one is on they will both be on. There is a nice diagram of this in the casemod faq(in the casemod forum here).
Ice Czar
Inscrutable
- Joined
- Jul 8, 2001
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- 27,174
cut and paste 101
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synch 2 PSU each as a seperate bus
1. Hardwired
2. With a relay
or employing a shared bus Like a redundant PSU
1. with resistors
2. with mosfets
3. with diodes (Single Source Fault Tolerant Power Systems)
(3 is slightly outdated now see gee's post > http://hardforum.com/showthread.php?t=776885)
I ran 2 hardwired 400 watts and a large RAID array for 3 years without issue on one of my boards (Abit KR7A)
however it may have been a contributing factor in the death of another board (ECS whatever
)
though Im not at all sure about that
not running them synchd however certainly corrupted the hell out of the array
eventually switched to a Zippy Emacs MR3-6450P N+1
with considerably less total wattage but plenty for what was actually required
with 32A on the +12V rail for the drives and considering the mobo's VRM was powered off the +5V
---------------------------------------------------------------------------------------------------------------------------------
but as mentioned by EnderW a PCP&C 510 would likely do as well
having 34Amps nominal and 38A peak on the +12V rail
----------------------------------------------------------------------------------------------------------
synch 2 PSU each as a seperate bus
1. Hardwired
2. With a relay
or employing a shared bus Like a redundant PSU
1. with resistors
2. with mosfets
3. with diodes (Single Source Fault Tolerant Power Systems)
(3 is slightly outdated now see gee's post > http://hardforum.com/showthread.php?t=776885)
I ran 2 hardwired 400 watts and a large RAID array for 3 years without issue on one of my boards (Abit KR7A)
however it may have been a contributing factor in the death of another board (ECS whatever
)though Im not at all sure about that
not running them synchd however certainly corrupted the hell out of the array
eventually switched to a Zippy Emacs MR3-6450P N+1
with considerably less total wattage but plenty for what was actually required
with 32A on the +12V rail for the drives and considering the mobo's VRM was powered off the +5V
---------------------------------------------------------------------------------------------------------------------------------
but as mentioned by EnderW a PCP&C 510 would likely do as well
having 34Amps nominal and 38A peak on the +12V rail