>>106219514
>>MSI X870 ATX Motherboard
>>Corsair SF1000 80 PLUS Platinum
You didn't need to buy an SFX (small form factor PC) power supply.
An ATX form factor PSU like the newest Corsair RMx 1000 is good enough.
PA 120 or any other air cooler might not be enough to cool the 9950X in all-core loads relatively quietly.