Actually bought 2 of these, they are Ex mining PSUs and they ARE 80 plus Platinum Certified 1250w units & the 80plus report shows over 90% efficiency pretty much from 10% load through to 100% (meaning they tested them at their rated 1250watts)
They dont have the neatest wiring, but the Soldering on the 2 units i have are good. They are using Taiwanese Caps.
The worst part of the design is the SEVEN Molex/Sata cable bundles are 1 molex/1Sata... again made for mining using PCIE breakout boards.
It has 12 PCIE 8 pins, cabled as 6x2... if course being a mining PSU thats to be expected.
Im guessing these have been ran hard for a couple of years solid with 6 or more high end graphics cards attached in big industrial level cryptocurrency farms. That alone is testament to them not being "Junk"
They are best described as Industrial grade, rough around the edges and certainly not "pretty" .. but they DO do the job, and with high efficiency.
The reason for their existence is mining, thats also why they arent modular. Modular connections are less efficient by a percent or so . These are built for max efficiency at minimum price because when your mining, efficiency = profitability (and for Net Cafe use that also applies, efficiency = profit)
Now compaired to my 2 High end Corsairs HX850 & HX1000I, they are certainly not as easy to cable manage or as pretty.. but thus far they run cool and quiet and *in spec* for my gaming cafe machines.
Definitely not junk... just specifically built for industrial grade cryptocurrency mining.. pros and cons? IMHO safer thay cheap versions of commercial brands like Coolermaster and EVGA that look pretty but often have inferior designs.
Colorful *is* a major Brand in China.. these come from the same factory as Segotep, which have a solid reputation in Asia.