Monday, July 31, 2023

Yeyian Pegasus 850 Watt Power Supply Review

While building your computer you need to think about the power that the system will need, then get the right power supply unit to meet those power needs. With the right connections that you will need and the right amount of power you can get the best PSU for your system. Today we will be reviewing the Pegasus 850W from Yeyian.  It’s MSRP is $149.99.


Features and specs:

Dimensions:  5.9 x 6.3 x 3.3in

Weight:   3.7 pounds

SATA:  3 Cables 3 Connectors 17in+5.9in+5.9in

PCIE 6+2:  2 Cables 2 Connectors 23.5in+5.9in

Power Cord:  4.92 Feet

MOLEX: 1 Cable 3 Connectors 17in+5.9in+5.9in

Output power:   850W

Output voltage: 12v1 + 12V2 + 5V+ 3.3V + -12V +5Vsb

Protection:          Aluminum Electrolytic Capacitors, 140mm Cooling Fan, EPS 12V Standard, Universal AC Input, Active PFC, MTBF 100,000 hrs, OPP, OVP, UVP, SCP, NLO, SIP, OCP, OTP

Efficiency:  90%, Meet ErP 2013 Energy Regulation and CE

Certifications:     80 Plus Gold, CE, FCC, NOM, RoHS

Wiring Type:  Black, Flat, 6 and 8 pin connectors support any GPU platform, PCI-E Ready

PCI-E:  5.0 Cable 1 Cable 1 Connector 12+4 Pin (12V) 23.5 inches

Form factor:  ATX 12V Ver 3.0

Input voltage:  100 Vac- 240 Vac

Power:  850W

Input current:  16A

Current type:  Alternate

Cable length / reach:  4.92 Feet

Input frequency :  50Hz - 60Hz

4+4:  2 Cables 1 Connector 27.5in

20+4:  1 Cable 23.5 Inches


The Yeyian Pegasus 850W Power supply came in a cardboard box that is neon green on the sides and gray on the top and bottom. It has a nice high-definition picture of the unit on the top and two pictures on the bottom, one of the front of the PSU and the other is the back. Inside of the box is the PSU with a custom fitted black Styrofoam ring to secure the PSU.  Next to the PSU is a cardboard box that holds the cables for the unit, they also have the screws to secure the unit after installing as well as some zip ties, and the final thing in the box is an installation booklet in both English and Spanish and a QR code for the user manual and warranty information.


Yeyian’s Pegasus 850W power supply is made from a sturdy metal chassis with honeycomb structure for the airflow, with some plastic for the connections.  Quality of the materials used, as well as the fit and finish, was very good. The Power supply is fully modular, coming with a 24-pin, four 8-pin, four 6-pin, as well as a 16-pin PCI-E 5.0 connector that newer GPUs use. The power supply is 80-plus gold certified and has a 5-year warranty.

One of the cool features of the PSU is that it is fully compatible with ATX 3.0. Meaning it can sustain up to 3x GPU power excursion and 2x power excursion. The PSU also has the full protection to make sure you and your system will remain safe while in use. I really like how they are making efforts to keep up with the continued new requirements that are always coming. Making this PSU compatible with 3.0 ATX as well as the newer PCI-E 5.0 connector for the GPUs.

The Yeyian Pegasus 850W power supply proved to be a great performer.  There are no fancy RGB’s, but what it was designed to do, it did well.  My VisionTek Radeon RX 6600XT graphics card didn’t suffer from any drop in power or frames.  The motherboard, DRAM, and SSD’s also received all of the solid current that they needed.  Bottom line, it did its job, performing well.


In conclusion the Pegasus 850W from Yeyian is a great PSU for a build that you would typically see. With it being 850W it is more than enough for most budget to middle systems. With the ATX 3.0 compatibility and the PCI-E 5.0 connector it is a great unit to get for future proofing your build. With all of this in mind I will give the Pegasus 850W our highly recommended award. For more info and complete specs, check out their website at