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Where to get these odd ATX connectors? (Added question about PCI slot power draw)

post #1 of 11
Thread Starter 
I just bought a Seasonic X-560w PSU for my new build. I want a way to test the power consumption of both my graphics cards and my CPU power (at different times). I have a unit that can measure current and voltage but it requires a pass through electronic design. I was hoping with my fully modular PSU that I could simply make replacement modular cables that can be wired into the controller. That way I can either use the stock Seasonic cables or install my measuring device.

As you can see the connectors are ATX spec but have a weird number of pins:



Where can I get the plastic connectors for those outlets? I'm mainly interested in the 12 pin connectors on the bottom of the picture.
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post #2 of 11
those are seasonics own design connectors,you either have to custom make what you need if you can get cables from seasonic
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post #3 of 11
Couldn't you just buy a "Kill a watt"? Seems like a lot less hassle then finding those odd connectors. They are cheap.

http://www.p3international.com/produ.../P4400-CE.html
    
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post #4 of 11
Quote:
Originally Posted by Epitope View Post
Couldn't you just buy a "Kill a watt"? Seems like a lot less hassle then finding those odd connectors. They are cheap.

http://www.p3international.com/produ.../P4400-CE.html
A Killawatt measures your system's total power draw at the wall, it's a great little device but it's completely useless if you want to check how much DC power your components are drawing from the PSU.
post #5 of 11
Thread Starter 
I don't want to measure total system power consumption, I want to measure only the specific power consumption of each component. (For example, just the CPU via the EPS12v connector)
Edited by charliehorse55 - 1/12/11 at 10:47am
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post #6 of 11
what about these?


or this
post #7 of 11
Quote:
Originally Posted by charliehorse55 View Post
I don't want to measure total system power consumption, I want to measure only the specific power consumption of each component.
Can't you just add an adapter on the molex end of the seasonic cables?(or pcie plug) Very easy to find an aftermarket extension you could wire up.
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post #8 of 11
Thread Starter 
Quote:
Originally Posted by The Master Chief View Post
what about these?


or this
I already have the measuring devices, that Zalman is useless because it doesn't output to USB. I'm doing this for a science fair project and it measures the power every 10ms for an hour while I run OCCT/LinX.
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post #9 of 11
Thread Starter 
Quote:
Originally Posted by Redwoodz View Post
Can't you just add an adapter on the molex end of the seasonic cables?(or pcie plug) Very easy to find an aftermarket extension you could wire up.
I have done that the problem is that the measuring device is so large it won't fit behind the motherboard tray, and thus the extension cable must be lengthened. This creates more electrical connections and all of a sudden I have a huge mess inside the case. I will do it as a last resort but I was hoping I could get those connectors.

Anyways, questions 2:

I know that graphics cards can draw power from the PCI slot, but once you have plugged in a separate ATX power connector how many watts are being drawn from the PCI slot? If the card was drawing 150W total, is 75w of that coming from the PCI slot? or is all 150w coming through the connector? or is just a random distribution between them (with no more than 75w through PCI slot)
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post #10 of 11
Still quite a bit. Most cards saturate or nearly saturate the PCIe slot before drawing from the external connectors, and there's always a small draw on the +3.3V via the slot.

You'd need one of these:
http://www.geeks3d.com/20100226/the-...raphics-cards/
to determine the precise power draw of a given card.
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