I was wondering why this 2nd hand UPS I bought says 1500VA, 980W. Are they assuming you don't have decent PFC on your computers? When did they start putting decent PFC in computers?

I tested (with one of those plug in energy meters) a computer running a good graphics card and CPU flat out with a cheap power supply (CIT) with "passive power factor correction" (along with a stereo playing loud and two old LCD screens), as this is where the UPS will be used. The meter indicated a PF of 0.71. I then tried a computer with a Corsair power supply with "active power factor correction", running a dual chip graphics card flat out, and got a PF of 0.98.

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My friend drowned in a bowl of muesli - a strong currant pulled him in.