Psu cpu connections.

CD32 · 15 Jan 2021 at 20:07

I'd start off by saying belated happy new year everyone but think I'll hold off on that one. A query if someone can help. Starting a new build..to replace my ageing 4770k. Ryzen 5600x. MSI x570 Tomahawk mobo & swapping out the psu for corsair RM850. My first modular psu. The thing is...on the motherboard there are two cpu connections. Cpu pwr 1 & cpu pwr 2. Cpu 1 is 8 pin & cpu 2 is 4 pin. The psu does not come with a 4 pin cable...just an 8 pin...labelled cpu. Am I looking at getting another cable with 4 pins? Seems strange I'd have to.

Also...the motherboard power cable..the end that plugs into the psu has two type 4 connectors...one short & one long..do I plug both of these in? Might sound a stupid question but you never know..& it's been 7 years since my last build!

Any advice appreciated..tia..Andy

CD32 · 16 Jan 2021 at 14:36

Thanks for the replies EsaT/MrPotato. I had to look to see that cable splits! Therefore I can plug it into cpu2 afterall. Or not if it's not needed as suggested. Did Google this first but came back with conflicting results..no it's not needed..yes it was needed for someone for stability..etc. Anyway..the cable is there afterall should I ever need it! cheers..Andy.

CD32 · 20 Jan 2021 at 18:04

Sorry for the late reply pastymuncher...didn't think anyone else would be posting. Yeah I did mean plugging the eight pin one in & splitting a second cable so they're both plugged in. But if not needed. Should have came here first instead of googling because I see my question has been asked & answered a couple of times before! Cheers again...Andy

CD32 · 24 Jan 2021 at 16:11

Raiden85 thinking about it...agree with you that the 4 pin isn't required.....given that my 4770k mobo only has the eight pin yet the processor draws more power than the 5600x.

Agree with you too pp111....I have the extra connection....may as well plug it in anyway as per mobo instructions. Cheers all!