Best Holiday Power Supply Deals 2021

Best PSU Deals cover
(Image credit: Corsair, EVGA, Seasonic)

With the holiday deals season upon us, there are plenty of deals on high-profile components and peripherals like CPUs and monitors. In all that excitement, things like PC power supply deals are easy to overlook. But if you’re in the market for a new PSU, now is a great time to buy one.

Whether you’re after a tiny SFX PSU to power your compact gaming rig or a 1000W-plus monster to keep your mining rig happy, we’re keeping an eye all the power supply deals we find, and we're listing the best below. If you’re building a new Alder Lake or Ryzen system, or just replacing a PSU that’s failing, picking up a PC juice box now should save you some cash that you can spend on games or other components.  

Best ATX Power Supply Deals

Seasonic Core GM-500 80 Plus Gold: Was $89, now $29

Seasonic Core GM-500 80 Plus Gold: Was $89, now $29
Seasonic makes some high quality PSUs, and this semi-modular model gets you gold efficiency and enough power for a decent midrange PC. There's a $15 mail-in rebate, but even at $44 it's a good deal.

Seasonic FOCUS PX-850:  was $174, now $109 at Newegg

Seasonic FOCUS PX-850: was $174, now $109 at Newegg
After a $25 rebate and $35 promo code discount (BCMAY22228), this 850W premium PSU from Seasonic lands under $110. For that, you get a Platinum efficiency rating, fully modular cables, a fanless mode, and a long 10-year warranty.

EVGA 850 B5 Fully Modular PSU: was $139, now $79 at Amazon

EVGA 850 B5 Fully Modular PSU: was $139, now $79 at Amazon
This PSU from EVGA has an output of 850 Watts. It's fully modular and is 80 Plus Bronze certified for its performance. It spans 150mm across and uses a 135mm fan for cooling.

Corsair RM850x:  was $144, now $108 at Amazon

Corsair RM850x: was $144, now $108 at Amazon
This 850W PSU from Corsair's RMX Series is fully modular, 80+ Gold Certified, has a zero-RPM silent mode and a long 10-year warranty.

Best SFX Power Supply Deals

EVGA SuperNova 5500 GM:  was $99, now $69 at Newegg

EVGA SuperNova 5500 GM: was $99, now $69 at Newegg
After a $10 rebate and a $5 discount (code EVGAGTP83), this compact but capable SFX PSU from EVGA dips below $65. For that price, you get 80+ Gold-rated efficiency, fully modular cables and a five-year warranty.

Corsair SF600 (80 PLUS Gold):  was $124, now $84 at Newegg after rebate

Corsair SF600 (80 PLUS Gold): was $124, now $84 at Newegg after rebate
The SF600 is a SFX power supply with a 600W capacity and 80 PLUS Gold certification. Its compact and modular design facilitates the building process and cable management. 

Corsair SF600 (80 Plus Platinum):  was $144, now $109 at Newegg after rebate

Corsair SF600 (80 Plus Platinum): was $144, now $109 at Newegg after rebate
This version of the SF600 features an 80 Plus Platinum certification, rare for an SFX PSU. Its compact case and modular cables make building a compact, clean system easier.

You can find even more savings at our best PC gaming deals page. We're also tracking the best monitor deals, best CPU deals, best SSD deals, best gaming laptop deals, best keyboard deals, best gaming mouse deals and the best PC hardware deals overall.

Makers and hobbyists will find sales by checking out the best 3D printer deals, best Raspberry Pi deals and best robot deals. If you're shopping for a graphics card, we even have advice on how to find the best RTX 3080 deals, best RTX 3070 deals and best RTX 3060 deals you can find in this challenging market.

Matt Safford

After a rough start with the Mattel Aquarius as a child, Matt built his first PC in the late 1990s and ventured into mild PC modding in the early 2000s. He’s spent the last 15 years covering emerging technology for Smithsonian, Popular Science, and Consumer Reports, while testing components and PCs for Computer Shopper, PCMag and Digital Trends.