PSU cables from RM750 to SF450

[farmtool33]

Hello,

 

I am upgrading my very old Dell Poweredge server to a much more energy efficiënt one.

 

So, I bought a Corsair SF450 Platinum. But the cables that came with it, are way to short for the case I want to use it in. The ATX and CPU power are just long enough, but the HDD and molex's aren't.

I do have an older Corsair RM750, and I saw that those cables where pretty much the same. Altough on the side of the Sata power and molex cables they say that it is another type.

 

Corsair RM750 = Type 3 SATA and molex cables

Corsair SF450 = Type 4 SATA and molex cables

 

I have searched quite a lot on google, and found that sometimes power cables are interchangeable. Now, I did not found an conclusive answer to my question.

I did found this table, but to be honest, I can't understand it fully... https://www.corsair.com/eu/en/psu-cable-compatibility

 

Is it safe for me, to swap the Type 3 SATA and molex cables from my RM750 to my SF450 and use my Type 4 cables on my RM750 (which are also just long enough for the devices I want to power)

 

Thank you!

 

EDIT: Following this, Molex and sata should be the same ? https://www.modders-inc.com/power-supply-pinout-repository/8/

[seon123]

The Corsair Type 3 and Type 4 cables are interchangeable, except for the 24 pin, which is different. 

[TempestCatto]

Unless you can find a wiring diagram for both and confirm if all the wires at the PSU match, no, it won't be possible. You might want to look into something like Cable Mod for extensions.

[farmtool33]

That's what I also found on other forum's, mixed reactions.

[TempestCatto]

2 minutes ago, farmtool33 said:

That's what I also found on other forum's, mixed reactions.

If you really want to be safe, just get Cable Mod extensions for what you need.

[MaratM]

Get a multimeter, a pen and paper, get a pinout on both cables and see if it works. 

Or you can use a old 100gb hard drive as a tester, if it works it is fine, if it burns you just burned a hdd)

[farmtool33]

7 minutes ago, MaratM said:

Get a multimeter, a pen and paper, get a pinout on both cables and see if it works. 

I is indeed a good option, I think I am going to try that.

[Guest]

6 hours ago, farmtool33 said:

 

 

Is it safe for me, to swap the Type 3 SATA and molex cables from my RM750 to my SF450 and use my Type 4 cables on my RM750 (which are also just long enough for the devices I want to power)

 

Don't bother with extensions. 

 

@seon123 gave you the correct answer in the very first response.

 

Type 3 and type 4 are the same except for the 24-pin.  You can use almost all of your RM cables. 

 

As for buying cables: If you have the money for extensions, you have the money for the proper cables.  Both Corsair and Cablemod have proper type 4 cables for sale if you need them.  Extensions add another potential point of failure and the added length and connectors create resistance that can drop voltage. 

 

[Guest]

I might add... You could theoretically use the 24-pin from the RM as well.  The difference is the SF has three extra pins for "sense" that the old RM didn't have.  But these are not required for the PSU to function.

 

You would simply plug 14 of the 18 pins into the PSU like so......

 

[seon123]

9 minutes ago, jonnyGURU said:

You would simply plug 14 of the 18 pins into the PSU like so......

The clip, though... 

Spoiler

 

 

[Guest]

39 minutes ago, seon123 said:

The clip, though... 

  Reveal hidden contents

 

 

There.  I cut it off. 

 

 

[Spotty]

3 minutes ago, jonnyGURU said:

There.  I cut it off. 

Would this void your warranty with Corsair?

Edit: Though, I guess you could just send it back with the original cable and no-one would ever know.

Edited February 25, 2019 by Spotty

[Guest]

13 minutes ago, Spotty said:

Would this void your warranty with Corsair?

Edit: Though, I guess you could just send it back with the original cable and no-one would ever know.

Unless they have reason to believe using the wrong cables is why the PSU failed, they don't ask for the cables back when you do an RMA.