Review on Enermax Marblebron 850W White Power Supply: Efficient & Silent PSU with 80 Plus Bronze Certification, Semi-Modular Design, Compact Size, Black Flat Cable, and 5-Year Warranty by Pavan Cormier

Enermax Cyberbron ECB700EW masquerading as a 700W PSU. If you look closely at my overview photo or the wattage chart listed on the unit itself, you can see that the unit is supplying 54 amps at +12 volts. The industry standard is to measure the power rating of a PSU by multiplying these two numbers: 54A * 12V = 648W. However, Enermax marketers see no problem promoting this 700W device. Look again at my review photo and you'll see a competing product, the EVGA 700 GD, another product advertised as a 700W PSU. The performance chart of the EVGA 700 GD shows that it is capable of delivering 58.3 amps at +12 volts. They indicate the power of the blocks as 58 A * 12 V = 699.6 W. So here we see Enermax's misleading marketing strategy. Even if we gave them the benefit of the doubt and just rounded 648 watts up to a significant number, that would be 600 watts, not the 700 watts they're talking about. It could have been a four star product if it was stable and really advertised. like 650W, but that's cheating, so minus one star. Worse, the device is unstable (causing system reset, crashing) under moderate loads, which even other 600W PSUs I own can handle. Another star minus. I think that's quite enough for a stable output of 550 watts. In the early 2000s, Enermax was the best power supply you could find. When computers were mostly beige and there was no branding or even English words on power supplies, Enermax was there. In fact, I still have some Enermax cases with old 365W PSUs that actually deliver the advertised 365W and are stable too. The times have changed. It is a pity. Another minus star for spending time identifying system faults, re-wiring and rebuilding the system, and driving to the UPS store on a busy Saturday afternoon to retrieve it.