If you're looking to build a PC around the groundbreaking Intel Core i9-12900K CPU, you'll need a power supply to match the powerhouse chip. The i9-12900K has a 125W base TDP rating, up to 241W max, so you need plenty of power. We've found the best PSU for Intel Core i9-12900K processors to fit every budget.
EVGA SuperNOVA P2 750W
Best overall
EVGA offers fantastic value with the P2 PSU, providing 750W of power with the maximum 80 Plus Platinum efficiency rating. Easily the best PSU for Intel Core i9-12900K processors for value and features, with a fully modular design removing unnecessary cables.
Corsair RM750x (2021) 750W
Fully modular
A fantastic fully modular alternative that can save you some cash, the Corsair RM750x has 750W of 80 Plus Gold-rated power. Perfect for minimizing cables around your case and keeping cool with a single 135mm fan.
EVGA BQ 750W
Semi-modular
Semi-modular power supplies still benefit from fewer cables to manage, having only the critical cords permanently attached. The BQ from EVGA kicks out 750W power at 80 Plus Bronze efficiency, cooled by a single 140mm fan. Perfect for preventing cabling nightmares.
EVGA BR 700W
Non-modular
If you're a cable-tidy wizard, you won't mind using a non-modular PSU like the EVGA BR. It has 700W of power rated at 80 Plus Bronze efficiency, cooled with a 120mm sleeve bearing fan keeping things nice and quiet.
Thermaltake Smart 700W
Best budget
Best to stick to a 700W minimum PSU for the Intel Core i9-12900K, so the Thermaltake Smart takes our spot for the budget pick. As cheap as it gets for a reliable power supply with a quiet 120mm fan.
be quiet! Dark Power Pro 12 1200W
Best premium
The ultimate killer PC with cutting-edge hardware needs a powerful PSU. The Dark Power Pro proved in our review to be the best choice for supporting high-end graphics cards, with 1200W of 80 Plus Titanium-rated power making it the best premium choice for Intel Core i9-12900K processors.
Choosing the best PSU for Intel Core i9-12900K
Choosing a powerful processor like the Intel Core i9-12900K means considering the total power needed to keep everything running. With a base 125W TDP (thermal design power) rating running up to 241W max, it's a decent draw for the CPU alone. A 700W PSU will suit an i9-12900K build just fine, with the EVGA SuperNOVA P2 offering high efficiency and a fully modular design to avoid cable-related mayhem inside your case.
If high-end gaming is your aim, stick to 750W and above to power some of the best graphics cards in the PC scene. The be quiet! Dark Power Pro 12 can hit up to 1200W of incredibly efficient 80 Plus Titanium-rated power, ready for any GPU you decide to pair with the Core i9-12900K Alder Lake chip. Alternatively, stick to the budget end by using the onboard Intel UHD graphics 770, and the Thermaltake Smart 700W PSU will be perfect until you decide to upgrade.
Ben Wilson is a freelance writer working for Windows Central with technical expertise and a background in electronics retail. Fueling a technology and video game obsession with coffee, you can usually find him behind one screen or another.
