cable PSU, don't know if I can keep one I have

[JasonBD]

Hey everyone,

 

I just bought a new motherboard and I realized that the CPU has a 8+4 pin for power.

 

My current mobo has 8 pin only. 

 

What I was wondering is if I can use a free 8 pin slot I have on my current PSU and get a new 8 to 4+4 psu cable or if I need to buy a new PSU.

 

My build : 

1 x HDD

2 x SSD

1 x DVD drive

GTX 1060 FE 6gb VRAM

Ryzen 5900x (I just ordered this)

 

My current Items : 

 

PSU : https://ca.pcpartpicker.com/product/47mLrH/corsair-power-supply-rm750

MOBO : https://ca.pcpartpicker.com/product/jrkD4D/asus-motherboard-p8z77v

 

New MOBO : https://www.newegg.ca/asus-rog-strix-x570-e-gaming/p/N82E16813119111?Item=N82E16813119111

 

Thanks for the help.

[Elisis]

3 minutes ago, JasonBD said:

I just bought a new motherboard and I realized that the CPU has a 8+4 pin for power.

You'll be completely fine with just the 8 pin. Ryzen CPUs will practically never need more than probably even an 4 pin, but obviously going 8 pin anyway won't do any harm. You won't need a new PSU.

[JasonBD]

My bro has a spare PSU cable that is a 8 to 4+4. Is using it not recommended since it's not something my PSU was built for at the time or will no harm come if I just slap on that cable (or is it absoluetely unnecessary to add it since it won't be using full 8 pin pwer anyhow?)

[Elisis]

Just now, JasonBD said:

My bro has a spare PSU cable that is a 8 to 4+4. Is using it not recommended since it's not something my PSU was built for at the time or will no harm come if I just slap on that cable (or is it absoluetely unnecessary to add it since it won't be using full 8 pin pwer anyhow?)

Do NOT use a PSU cable that was made for a different PSU model unless you are 100% sure they're of the same pinout. The PSU-side pinouts aren't standardized so you could end up frying something.

[JasonBD]

Ok. Noted. I won't be using any of his stuff. His stuff is pretty recent whereas mine is 10 years old so I won't risk it. Thanks for the quick replies

[Elisis]

8 minutes ago, JasonBD said:

Ok. Noted. I won't be using any of his stuff. His stuff is pretty recent whereas mine is 10 years old so I won't risk it. Thanks for the quick replies

No worries