Among the eleven power supplies I have tested today only one model stands out with its technical characteristics. It is the Antec TruePower Quattro which is cooled by an 80mm fan. It proved to be noisier than most of its opponents reviewed today but looks preferable to other high-wattage PSUs with small cooling fans. If you’ve got a server system case that does not allow to install a PSU with a 120 or 135mm fan, the Antec TPQ-850 is going to be a good choice for you. Therefore we are proud to award Antec TruePower Quattro TPQ-850 with our Editor's Choice title:
The rest of the PSUs cannot be easily categorized as each of them is good. I have not found serious defects in any of them. My comments are only reduced to "that's good enough but might be even better".
The PSUs do not vary much in size. There are no monsters with a length of over 20 centimeters like the Zalman ZM850-HP. They all deliver excellent electric parameters and high efficiency. So, if you don’t have some specific PSU requirements and just want to buy a high-wattage and high-quality model for your home gaming PC or high-performance workstation, you can base your choice on the availability and warranty conditions.
The only factor that might serve as a shopping guide is noisiness. If you want to have a quiet PSU, you may want to consider the Enermax MODU87+ (or the cheaper PRO87+), Huntkey HK901-11PEP, Kingwin Lazer LZ-850, Ultra X4 ULT-HA850X and XFX XPS-850W-BES. None of them has a fan speed higher than 800 RPM at low and medium loads, which makes them virtually silent. We are pround to award these power supply inits with our Recommended Buy title: