Do I Need a New PSU? (in the middle of a new build)

m3dicat3d · Mar 16, 2017

I am upgrading my mobo from an MSI Z77 Mpower to an MSI Z270 M7. I noticed on the new board there are connectors for a CPU1 (8 pin) and CPU 2 (4 pin). The old board had only 1 CPU connector (8 pin).

I have a ThermalTake Smart M 750W PSU (I know it's not the best). I am in the middle of the build right now, and my PSU has only one 8 pin cable for the CPU.

I do have on hand a cable that will split an 8 pin into an 8 pin and a 4 pin. I have the feeling this might address the issue, but I though I'd rather check first before making that decision to be on the safe side.

Otherwise, I'm afraid I might need a new PSU, but again, I wanted to check first.

Hamperking68 · Mar 16, 2017

It's generally best to Avoid connectors and splitters where ever possible.

However, that Power supply isn't that bad so you might be able to get away with it.

Just try and see how it goes, if it works run with it.

mcnumpty23 · Mar 16, 2017

usually the 2nd cpu connection is for extreme to the edge overclocking

should work fine with out it

m3dicat3d · Mar 16, 2017

Thanks for the replies, I am going to be overclocking it for sure though.

mcnumpty23 · Mar 16, 2017

i mean bleeding edge overclocking--phase change,liquid nitrogen etc

for example a 7700k will hit 5ghz no problem with out an extra cpu connector

Hamperking68 · Mar 16, 2017

m3dicat3d :

I would recommend getting something with the second connector then.

It's better to have it and not need it than it is to need it and not have it.

Plus, it leaves more headroom for the future.

m3dicat3d · Mar 16, 2017

Yeah, I've been looking into PSUs in between checking back here. If I have to go that route then I will. Just REALLY hoping not to for now.

mcnumpty23, just to make sure I am reading it right, you're saying that the 8 pin connector should be enough for the board if I am doing a "standard" OC, and some some crazy sh*t? I have that board and PSU, and I'm installing an i7 7700k with a Cryorig R1 Ultimate as well, and am really looking at an OC of around 4.8ghz, just to give a little more info on my end.

mcnumpty23 · Mar 16, 2017

m3dicat3d :

yes just the 8 pin for "standard "overclocking should be fine

only using 8 pin here my 7700k does 5ghz no sweat

m3dicat3d · Mar 16, 2017

Thanks, I'll give it a go and report back here.

mcnumpty23 · Mar 16, 2017

my old asrock board had the extra cpu connector as well

never needed to use it for 4.7ghz on my old 6600k either

mcnumpty23 · Mar 16, 2017

and for a thermaltake psu--they have had some pretty poor psus in the past

that one actually gets reasonably good reviews from the quick look i had

m3dicat3d · Mar 16, 2017

Thanks, that's actually good to know on both counts. Right now I am trying to get past an "overcurrent detected in USB, shutting down in 15 secs" problem and am searching for/trying solutions, but once I get it figured out I will come back to verify that the 8-pin is doing the job just fine.

mcnumpty23 · Mar 17, 2017

try disconnecting the front usb ports

also make sure the little metal prongs on the rear io shield didnt slip into a usb port seen that before

also seen some one before with a msi board had taken off some plastic cap near the front usb header that they shouldnt have and put the front usb on the pins it revealed

m3dicat3d · Mar 17, 2017

Thanks, I was up late last night doing all you suggested and more. After speaking with MSI tech support once I exhausted everything I could check or find out about, the tech quickly agreed that the board was DOA.

Soooo, I guess I'll have to wait to reply about the whole 8 pin CPU thing until I recieve a new board (hopefully a working one), at which point I will try to follow up again.

Thanks so much for your help though, I am very appreciative of it.

mcnumpty23 · Mar 17, 2017

you are welcome

hopefully once you get your new board all will be well

Search

Do I Need a New PSU? (in the middle of a new build)

m3dicat3d

Honorable

mcnumpty23

Hamperking68

Distinguished

mcnumpty23

Polypheme

m3dicat3d

Honorable

mcnumpty23

Polypheme

Hamperking68

Distinguished

m3dicat3d

Honorable

mcnumpty23

Polypheme

m3dicat3d

Honorable

mcnumpty23

Polypheme

mcnumpty23

Polypheme

m3dicat3d

Honorable

mcnumpty23

Polypheme

m3dicat3d

Honorable

mcnumpty23

Polypheme

TRENDING THREADS

Latest posts

Moderators online

Share this page