RTX3080 crashes my pc

[Jomsdk]

Hello ROG people

My pc is shutting off when im inside a game, the problem started when i replaced my graficcard from a ROC Posidon 1080ti to a RTX3080 rog strix.

When im in World of Warcraft it simply just crash my pc with no error or nothing just shut everyting off it starts up again after ca 5 sec.

Have anyone else had this issue or know of a known fix for it.

My system:

Asus Rog Formula X Motherboard with Intel 8700k
2 * Samsung M.2 drives (sometime they reset to pcie x2 so i have to enter bios to set it too x4 pcie)
Corsair AX1200i psu
Corsair Commander
32g Ram Gskill 3200mhz
34" curved rog monitor

CPU is watercooled in a custom loop

regards

Jomsdk

[TheSpearman]

I run a very similar setup, with an AX1200i PSU. Including going from a 1080 to a watercooled 3090.

I doubt it's heat, the system would tend to freeze instead of rebooting.

I'm more inclined to suspect the PSU is cutting out.
Does your 3080 power cables all come separately from the PSU, or are they on any kind of splitter or shared cable?

[Jomsdk]

Replacing the psu so ile check in later:)