Missing 1 x 4-pin ATX 12V power connector for CPU

[DennisDoha]

My new motherboard (Gigabyte Z390 UD) has both an 1x8-pin ATX 12V power connector and a 1 x 4-pin ATX 12V power connector.

I didn't know about this until I was building my PC.

The problem is that my PSU only has an 8pin 12V power connector so I dont have a cable to go in the 4pin connector on my motherboard.

So I was wondering if I can use a Molex to 4pin ATX converters like the one in the link:

 

https://www.allekabels.nl/molex-kabel/7212/1082608/molex-naar-4-polig-atx.html?gclid=CjwKCAjw4ZTqBRBZEiwAHHxpfrSPfgIGSwuPCqTpTId4a_18T5PMroFipWE96HQpcG0zPcH-_Fix_hoChzkQAvD_BwE

 

Since I read that for overclocking I will need to connect both cables to power the CPU which I was planning on doing.

CPU is an i5 9600k

[Metallus97]

Even with LN2 and stuff the third EPS is not realy needed. Simply connect the 2x4pin 12V EPS and then you're fine

This is just a "feature" to make the mobo appear more badass

[iamdarkyoshi]

Most 8+4 boards I've seen run totally fine with just the 8 pin connected and the 4 pin disconnected.

 

Unless you get into like LN2 cooling or whatever, the 8 pin will supply more than enough

[DennisDoha]

I tried overclocking like that.

Core at 4.5Ghz and 1.275V and my pc just wouldn't boot anymore, not even into the bios.

I had to clear Cmos to get it running again at the standard 1.2V

[Metallus97]

1 minute ago, DennisDoha said:

I tried overclocking like that.

Core at 4.5Ghz and 1.275V and my pc just wouldn't boot anymore, not even into the bios.

I had to clear Cmos to get it running again at the standard 1.2V

But this error should not have to do with power

[iamdarkyoshi]

3 minutes ago, DennisDoha said:

I tried overclocking like that.

Core at 4.5Ghz and 1.275V and my pc just wouldn't boot anymore, not even into the bios.

I had to clear Cmos to get it running again at the standard 1.2V

Its not exactly a top end overclocking board...

 

I'd try higher voltage. 1.35-1.4, just watch thermals