Crosshair V Formula Z 4pin ATX PSU question

[rog_panda]

AMD FX-8350
Radeon R9 290
16GB AMD gamer series RAM
1000 watt Corsair PSU
Windows/Linux

I've got a new build and I'm interested in how to overclock this thing properly.

My system is stable and great, but trying even the most basic Level Up tweak makes it crash consistently. System will just shutdown after maybe 10 minutes. It's not overheating, I've got it liquid cooled and temps never seem to get out of control.

I'm wondering if it's a power supply issue. I do not have the 4-pin supplied with power on the mobo, just the 24-pin and the 8-pin. I thought the 4-pin would only be needed if I was trying to push speed towards 5 or maybe multiple GPU's. I'm just looking for a stable 4.5-6 range.

Any advice? On Ubuntu Linux it's a kernel panic. On Windows I can't tell exactly it just shuts down.

[MeanMachine]

Hi rog_panda and Welcome to ROG

As you are interested in how to overclock your system properly, then I suggest you first get to know your Bios.

There are a number of good tutorials and Vids that will help, and only OC using your Bios and not within your OS.

First you should populate the 4pin for stability and your PSU is adequate at 1000W.

To test for stability I recommend using RealBench and HWMonitor to observe temperature and voltage fluctuations during stress testing.

These are key to a successful and stable OC.

First is to establish a stable base clock frequency, you then raise your multiplier a small amount, then reboot and if unsuccessful, you then up your CPUcore voltage a small amount to see if that works. If stable then increase your multiplier and voltage ((Small amounts), rinse and repeat.
Eventually you will reach a wall and no matter what you try you will not have stability.
This of coarse depends on the capability of your CPU and no two are the same. It will take patience and time and many reboots and tests before you are done. You should also save profiles in your Bios as you go, to save having to start from scratch.

Here are links to some Vids and Tutorials:

https://www.youtube.com/watch?v=-kOlBalkVyA
https://www.youtube.com/watch?v=MckeAmnDeTk

Have fun and please report back with results. For specific problems re: Extreme Tweaks and settings, just ask

MM

BTW, Please fill in your system specs in your profile so we know your system.

[rog_panda]

Thank you sir, will be trying to get a stable OC this week on it. I'm stable at stock settings, will need to get a new cable though. Didn't see one provided from factory.

[MeanMachine]

rog_panda wrote:
Thank you sir, will be trying to get a stable OC this week on it. I'm stable at stock settings, will need to get a new cable though. Didn't see one provided from factory.

Seams strange regarding the cabling. Corsair normally provide a number of 8pin plug cables and usually the 8pin can be separated to provide for the 4pin. You just tie the other portion back. Have another look!!

MM

[blppt]

MeanMachine wrote:
Seams strange regarding the cabling. Corsair normally provide a number of 8pin plug cables and usually the 8pin can be separated to provide for the 4pin. You just tie the other portion back. Have another look!!

MM

I dont know what particular Corsair PSU he has, but my TX850 needed a Molex to 4-pin adaptor to populate both the 8 pin and the extra 4 pin plugs. Just FYI.

[blppt]

Yeah, DEFINITELY get the 4 pin connector---if you are trying to reach 9590 speeds, it becomes essential.