How Much it Too Much Splitting Power?

I'm running a Great Wall e750 750w 80Plus Gold ATX 12v power supply in my current system. I only have one SATA power cable available, which comes equipped with three SATA connectors.

The first, I have running to my fan control board on the back of my motherboard. The other two have splitters on them for my hard drives. So on the second SATA connector, I have a two drives from it via splitter #1. On the third SATA connector, I have two more drives via splitter #2. So that's a total of 5x things sources pulling power from the one sata power cable. I wanted to verify I'm not overwhelming that one chord with my devices.

But here's the catch...

I stored all the cables long ago and they were lost in a move. And I'm too paranoid to buy an aftermarket cable that doesn't match, as I've heard horror stories about that. I've not had any issues thus far, but don't want to be unneeded strain on any of my equipment.

Thoughts?

Buy a quality cable from a reputable supplier and all will be well.

I believe that a SATA cable is rated at 54W per connector. If You're not pulling more than that, you should be OK.

If you're paranoid, here's a claim that the Great Wall E750 is the same as a Corsair TX750M.


You may be able to buy compatible cables from Corsair.

There's nothing intrinsically wrong with Great Wall, as far as I know, but I'd prefer to buy brands with more US support.

win9598xp7 said:

And I'm too paranoid to buy an aftermarket cable that doesn't match

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win9598xp7 said:

I only have one SATA power cable available, which comes equipped with three SATA connectors.

Click to expand...

I’ve never had a problem with data cables but power cables… My fans stopped working a couple of months ago, an inspection showed that one of the heads of the power cable had started to melt and was obviously still hot. I escaped disaster. I believe I may of stumbled upon a crappy supplier.
As far as the consumption, I never worry as I run a pretty decent (but outdated) Silverstone 1500.
I have many splitters but I have many fans and many more drives.

Maybe this will be helpful

The cable must be 18AWG.

Solution:

I received some advice on another forum to just find the individual watts per device (which I didn't realize you could find online, I thought I'd have to pull every piece of equipment individually to find that).

So it looks like my fans are only running a 1.08 watts each, and the average watts per drive is around 6-7 watts. But that's only when active, when idle they are much less. So I'd assume I'd have to be pushing all four drives simultaneously to max out that power, which I can't see doing.

So my new calculation on that one chord is around 32-35 watts on the 52 watt cable. So I feel much more comfortable now. Thanks!