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Question about PCIe 8 pin cables - Page 2

post #11 of 18
Thread Starter 
Big Elf...

The voltage on the PCIe cables are the same as the EPS cables correct? same voltage, just different orientation and/or connectors???
    
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post #12 of 18
Both are a mix of 12V and Ground only.
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post #13 of 18
Thread Starter 
Cool. Thanks for the clarity. I just want to make sure I'm covering all the bases, because I don't want several thousand to go up in smoke just because I'm worried about a few sleeve colors! blinksmiley.gif
    
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post #14 of 18
To reduce the chance of error it's worth investing in a low cost PSU tester such as the Thermaltake Dr Power II, particularly as it will test 8 pin PCI-E cables as well as 6 pin. A cheap multi-meter is also useful to track down errors on individual pin-outs.
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post #15 of 18
Thread Starter 
Thanks for the heads up on that... I will order one today.
    
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post #16 of 18
Make sure you get the Dr Power II not the earlier version.
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post #17 of 18
Thread Starter 
Still at the sleeving and wiring... only now I'm working on the 24Pin MOBO connector. got a new dilemma...

Here is the PSU layout of the 1350W Enermax Platimax that I'm using.



And here is the wiring pattern...



Now it doesn't take a rocket scientist to see that it will be VERY difficult to arrange these wires in a neat manner on the PSU side. That is UNLESS... the wires are somewhat interchangeable. Here's what I need to know.

If you look at the color code wire layout above, you'll notice 4 wires that are outside of the connector block. Those are wires that are coming off the same pin. In other words, there are two wires crimped to the pin on the 24 pin side and split off to two places on the PSU side. For example, Black 12/26 are two ground wires that are crimped together on the 24 pin side and split off to two pins on the 20 pin PSU side. Now, if you look closely at the layout again...



you can see that Black 26 is labeled "RS-" whereas the remaining 8 black wires are all simply labeled GND. My question is... Are these grounds interchangeable and while I'm at it, What does RS mean?

Same question then applies to the 3.3V, 5V, and 12V.



Here you can see that the 4 orange wires and the single brown wire are all labeled 3.3V with the exception of the brown wire which is labeled 3.3V RS. Does it matter which wire goes where as long as they all end up in those specific positions on the connector? I should point out that if you look at my color code layout above, the small brown wire that is the RS wire was crimped together with one of the other orange 3.3 wires. So I ask, is this important that this wire end up in this place or not?



Here you can see that all 6 red wires are all labeled 5V with the exception of the small red wire which is labeled 5V RS. Does it matter which wire goes where as long as they all end up in those specific positions on the connector? I should point out that if you look at my color code layout above, the small red wire that is the RS wire was crimped together with one of the other red 5V wires. So I ask, is this important that this wire end up in this place or not?



Finally, the same goes for the 12V yellow wires. the small yellow is labeled 12V RS Does it matter.

Also, I should point out, I swapped the small gauge wires for 16 gauge just like the rest for consistency and easier to sleeve.

Thanks for the help
    
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post #18 of 18
The pin-outs marked RS are likely to be sensor wires for 12V, 5V, 3.3V and Ground and if they are all dual wires then this pretty much confirms it. You normally deal with these wires by splicing them and you can use the same gauge wire rather than use thinner wire.

Depending on where your PSU is in the case you can make a small connector which includes all the splices and hopefully can be hidden away then make a neat extension to connect to that. Something like this as an example



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