Windows 10: RAM PROBLEM ASROCK Z390 PHANTOM GAMING 4-CB

i bought this prebuilt computer from cyberpower in january 2020, specs: i7-9700k, 2070 super, team group vulcan 2 x 8gb 3000mhz ram, 1 tb m.2, asrock z390 phantom gaming 4-cb. recently i bought g.skill ripjaws 2 x 16gb 3200mhz ram because my main game rust was starting to feel choppy and i noticed 95%+ memory usage in task manager, when i use the ripjaws my game runs flawlessly but every 10-30 minutes my game will either freeze or blue screen and when it blue screens it gives a different error code relating to memory every time, keep in mind my computer never freezes with my old ram ill list

:)

 

ASRock Z390 Phantom Gaming X - which ATX12v should I use?

Hello.
I'm receiving my new ASRock Z390 Phantom Gaming X mobo in a few days. I have read the manual, and at one point I'm confused. There are 2 ATX 12V Power connectors on this mobo, one with 4 pins and one with 8 pins. My PSU only has an 8 pin ATX 12V. In the manual I read, that I must use the 4 pin ATX (??) But why not use the 8 pin which will fit with the powercord from the PSU?
Here is a picture from the manual:




The 8 pin cord from the PSU can be seperated into 2 x 4 pins, but what is the right installation here? *Redface
I'm going to use my 8700K in this.

 

ASRock Z390 Phantom Gaming X - which ATX12v should I use?

#3 It is on page 27 in the English manual.



And I will of cause also use the 24 pin main power connector. *sarc

 

ASRock Z390 Phantom Gaming X - which ATX12v should I use?

I agree that IF the OP PS has 8 and 4 pin, he should use both.
But he wrote it has only 8 pin connector. So he should plug in the PS 8 pin connector on the MB 8 pin connector.