MOBO with extra ATX 4 pin 12v power header???

[JapanDave]

Hey All,

Just another issue in my attempt to get this build finished.

So I destroyed my MOBO again and I decided what the heck, just go all out. 

And the decision is made to get a ROG Zenith II Extreme and use the new Threadripper EDIT: not 3990X. but the 3970X

I already have a power supply which is the Thermaltake Toughpower iRGB PLUS 1250 W 80+ Titanium, but I am getting compatibility issues where the power supply does not have a 4 pin ATX  connector.

 

Do I have to get another power supply or can I use another connector with an adapter?

 

The supplied cables in the pic.

 

Web page for the power supply

Thermaltake1250w Titanium

[Techea]

The one that says ATX 4+4 pin is the 4 pin you need in addition to the 8 pin for the cpu. Use the EPS 8 pin plus ATX 4pin.

[JapanDave]

4 minutes ago, Techea said:

The one that says ATX 4+4 pin is the 4 pin you need in addition to the 8 pin for the cpu. Use the EPS 8 pin plus ATX 4pin.

I was under the impression that I would need another 4+4 cable???  The Crosshair VIII MOBO also has an an extra CPU 4 pin connector on the board and in parts picker it says the power supply is compatible. But when changing the MOBO to Extreme is says it is not, so is this just a parts picker issue and I am good to go with just one 4+4 cable?

[Jurrunio]

5 minutes ago, JapanDave said:

I was under the impression that I would need another 4+4 cable???  The Crosshair VIII MOBO also has an an extra CPU 4 pin connector on the board and in parts picker it says the power supply is compatible. But when changing the MOBO to Extreme is says it is not, so is this just a parts picker issue and I am good to go with just one 4+4 cable?

EPS 8pin = ATX4+4pin, it probably just means the 8pin can't be split while the ATX 4+4pin can.

[Techea]

First plug the EPS cable 8pin to the cpu header and also add the ATX 4pin to it because it’s a 12pin header

[JapanDave]

6 minutes ago, Jurrunio said:

EPS 8pin = ATX4+4pin, it probably just means the 8pin can't be split while the ATX 4+4pin can.

Looking at the MOBO pics it has 2 x 8 pin and a 6 pin, which would mean that I don't have enough cables??? As I can't be plugging in Pce-i cable into that connector???

 

[Techea]

Ok, I see what you mean. I thought it’s a 12 pin header. Just plug EPS and ATX and don’t bother with the 6 pin. 

[JapanDave]

2 minutes ago, Techea said:

Ok, I see what you mean. I thought it’s a 12 pin header. Just plug EPS and ATX and don’t bother with the 6 pin. 

Really, I can do that? Reading the manual it says if any overclocking is to be done I will need the 6 pin as well.

 

Anyway, a screen shot of the connectors.

[Techea]

Don’t overclock the cpu until you get the 6 pin connector. 

[JapanDave]

6 minutes ago, Techea said:

Don’t overclock the cpu until you get the 6 pin connector. 

Yeah, that is what I am stuck with. In my PSU where do I plug in an ATX power cable when it only has 2 x 8 pin and the 24 pin?

Can I use the peripherals 6 pin connector /plug in?

[Techea]

Use a Pcie cable to charge the 6pin cpu header. They split (6+2) so you should be good. Try one cold I’m curious if they fit that header.  IDE Molex to 6 pin if nothing works. 

[Jurrunio]

42 minutes ago, JapanDave said:

As I can't be plugging in Pce-i cable into that connector???

Yes, that's what is meant to go into the 6pin connector

 

and you dont need that for your overclocking either, 2 8pin can already deliver over 600W of power to the CPU and even the best custom loop can't cool that much, without going subambient say, cooling the water to below ambient temperatures with a water chiller.

[JapanDave]

1 hour ago, Techea said:

Use a Pcie cable to charge the 6pin cpu header. They split (6+2) so you should be good. Try one cold I’m curious if they fit that header.  IDE Molex to 6 pin if nothing works. 

OK, that is really good to know. Thanks so much for the help. So peripherals are also 12v.

1 hour ago, Jurrunio said:

Yes, that's what is meant to go into the 6pin connector

 

and you dont need that for your overclocking either, 2 8pin can already deliver over 600W of power to the CPU and even the best custom loop can't cool that much, without going subambient say, cooling the water to below ambient temperatures with a water chiller.

OK, that is really good to know. Interesting as why they have there then?

[Jurrunio]

4 minutes ago, JapanDave said:

OK, that is really good to know. Interesting as why they have there then?

Low end and mid range board have more connectors than they need to to look good, high end boards have them because people do buy these for some LN2 overclocking, i.e. cooling CPU with liquid nitrogen and pour a lot more voltage into it for even more MHz.

[JapanDave]

2 minutes ago, Jurrunio said:

Low end and mid range board have more connectors than they need to to look good, high end boards have them because people do buy these for some LN2 overclocking, i.e. cooling CPU with liquid nitrogen and pour a lot more voltage into it for even more MHz.

Oh, I see. Thanks

Funny story, I had been watching as many videos as I could to try get the best informed decision on which items I would be best to go with and in some the videos people would say this board is also good when using "Elan 2" (That is what I thought they were saying) , until a few days ago, I realized they were talking about liquid nitrogen.