Qtech

Alot of people say they're not.
I personally had a q-tech (still use it on my old machine which is next door) and didnt have a problem with it. Others have reported them blowing up quite easily.
With PSU's you generally get what you pay for.
 
Ever compared the weight of a Qtec with that of a (for example) Enermax? Its always like this: The lighter it is, the crappier it is.

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Q-Tec is the worst you can buy.

Q-Technology is about the best, based on Fortron-Source designs.

Q-Tech is either yet another brand or a confusing abbreviation for one of the above brands.