- May 29, 2013
- Asus Z370-G Gaming (Wi-Fi AC)
- i9-9900K OC'd @ 5.0GHz
- RX 6600 XT
- Classic Mac
- Mobile Phone
ok, pretty new to all this so no idea where I would find the thermal paste?
Any ideas if it would be related to the 750w psu?
Power supply is certainly a possibility... However, I think 750W is more than sufficient for a Vega 64 and i7-8700K unless both of those are extremely overclocked or if you have lots of internal devices installed.
If you suspect it's the power supply, you can use a multimeter to test the 12v rail when under load to see if it's actually providing 12v. Connect the multimeter to a 4 pin Molex connector to test. Yellow is 12v and black is ground.
Here's a pretty good video on how to replace thermal compound:
I've grown to really like Thermal Grizzly Kryonaut.