there are pros and cons to each.
multi rail: Pro - overcurrent protection on each rail. a short on one string (rail) will shut the PSU down before the string wiring can catch fire.
multi rail: Cons - have to balance the rails
single rail: Pros - no load balance worries. jump start your jeep!
single rail: Cons - fire if something shorts big time.. 100 amps on a single wire = bad news.
BTW internally most all "multi rail" PSUs have one 12v source (which also powers 3.3v and 5v rails), each rail has overcurrent protection though.
Topic: Sucking precious power out of Multi-Rails PSU. (PIC) (Read 1401 times)
Why not stay away from multi rail psu's? Only buy single rail psu's?
the PSU manual may specify what strings are on what rail.
for example my antec TP 550 new manual (pdf link) tells exactly whats on what.
for example my antec TP 550 new manual (pdf link) tells exactly whats on what.
Ah i get it now.
How do you know if the PSU reserves a rail for the CPU? Do you ahve to open it?
How do you know if the PSU reserves a rail for the CPU? Do you ahve to open it?
Stripping the insulation ~1 cm and twisting the other wire on it.
not sure if i see it right,but you tap the p4 wire?
Using the 2nd 4pin for the CPU is never a requirement unless you plan on going 100w +
(miners use Celerons and 25w cpu of the like.)
I have a few 4pin grabbed from dead PSUs that I sometime plug with a molex to power the CPU.
This way I can use the whole 8pin and use them as PCI-e ,,, I am now to use a tool to make custom pci-e without any tampering to the PSU. (warranty safe)
I understand that, but how did you use your 8pin EPS rail? you tap your PCI-E on it or did you use an adapter 8pin EPS -> PCI-E connector.
not sure if i see it right,but you tap the p4 wire?
Using the 2nd 4pin for the CPU is never a requirement unless you plan on going 100w +
(miners use Celerons and 25w cpu of the like.)
I have a few 4pin grabbed from dead PSUs that I sometime plug with a molex to power the CPU.
This way I can use the whole 8pin and use them as PCI-e ,,, I am now to use a tool to make custom pci-e without any tampering to the PSU. (warranty safe)
I can't count the number of time I had to do this.
Reroute the 4pin into PCI-e.
That PSU, PowerColor 500w, dedicate a whole 18amp for the CPU
https://i.imgur.com/1HvAd.jpg
not sure if i see it right,but you tap the p4 wire?Reroute the 4pin into PCI-e.
That PSU, PowerColor 500w, dedicate a whole 18amp for the CPU
https://i.imgur.com/1HvAd.jpg
I dont get it, what's wrong with an adaptor that you get when you buy the video card?
that adapter that comes with the video card pulls power from a peripheral cable, which is probably a different power rail than the CPU power rail on a multi rail PSU. you want to take advantage of the CPU's rail as well since the CPU (for dedicated miners) shouldn't be pulling that much power.
I dont get it, what's wrong with an adaptor that you get when you buy the video card?
Well ,,,
Black = ground
Yellow = 12v
Black = ground
Yellow = 12v
this was something i was thinking about doing, but wasn't sure if it's safe for the PSU or video card, and i also didn't know the pin assignments. can you show which CPU cable pins to go into which pci-e cable pins?
I can't count the number of time I had to do this.
Reroute the 4pin into PCI-e.
That PSU, PowerColor 500w, dedicate a whole 18amp for the CPU
https://i.imgur.com/1HvAd.jpg
Reroute the 4pin into PCI-e.
That PSU, PowerColor 500w, dedicate a whole 18amp for the CPU
https://i.imgur.com/1HvAd.jpg
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