Need help

[Nasa34]

Hello I have a problem with my rig. It keep restarting when under load I have already tried new ram new CPU new board new had. And it's still doing it. I have got to the point where I have built 2 rigs one has a fx 8350 16 gigs ddr3 r9 290 gpu and the other is a fx 6300 16 gigs ddr3 with a 970 ti and they both reset every time under load what do I do

[FAQBytes]

Is the PSU the same under both? To me that seems like the only constant, and would make a heck of a lot of sense, especially if it's an "El Cheapo" PSU.

[Crunchy Dragon]

Could be overheating or a faulty PSU.

 

-Moved to Troubleshooting-

[Nasa34]

One psu is a fx 8350 the other is a fx 6300 both are in there own mobo

[Nasa34]

Also could not be over heating the liquid cooled

[FAQBytes]

I was asking about the Power supply, not the CPU. 

[Nasa34]

Oh oops noob moment both psu are 750

[Nasa34]

What I find odd the 6300 Mobo uses at 4 pin atx the 8350 Mobo uses a 8 pin 

[FAQBytes]

2 minutes ago, Nasa34 said:

Oh oops noob moment both psu are 750

Okay, so you're using different PSUs for each?

To help prevent a lot of back and forth on each, please do the following:

• List out all the components (with specific model numbers) in each machine
• List of symptoms and when it started happening
• List all the troubleshooting steps you've gone through so far

As for the different ATX power headers on the motherboard, that is for extra power delivery to the CPU. It started off as an additional 4-pin, and as CPUs became more powerful, they moved up to an 8-pin. Lower-end boards assume lower-end (read: less power hungry) CPUs, and cut costs by limiting the power delivery.