Efficiency and Power Factor
The PSH series is older than the above-discussed DSA, so its efficiency is 86%.
This efficiency is standard today, but a few years ago an 80% efficient PSU was the very best the technology could offer.
The allowable load on the standby source is 3A. These Vulcan PSUs cope with it just fine. The 650W model keeps that voltage within 0.12V from the nominal value, the maximum allowable deflection being 0.25V.
The 850W model has no problems, either.
I have seen so many PSH series power supplies from Channel Well already that I meet them now as old good friends that don’t have to impress me. They only have to confirm that their quality has not degenerated over time. Indeed, although over two years old, the PSH series is superior to many newer platforms with its excellent parameters, very stable voltages, high efficiency, rather quiet operation, and high quality of manufacture.
There is nothing you can find fault with. However, the widespread popularity of CWT power supplies is a disadvantage for each particular PSU producer because it is hard to distinguish oneself among such tough competition.
Ikonik tries to do that by offering very long cables (65cm to the first connector while other PSUs offer no more than 55cm). If you’ve got a very large system case, you should know that an extra 10 or 15 centimeters of cables can be very precious.
Again, the price is the single drawback I can see in Ikonik’s Vulcan PSUs. At the time of my writing this, the IP-I650A-AAAA cost the same as the 100W more powerful Corsair CMPSU-750TX, which is the Channel Well PSH series, too. Anyway, there is a reason in favor of the Vulcan as I have written in the previous paragraph.