How much power protect ion does a typical desktop system require?

have need of to size a UPS for a desktop system.

How much power protect ion does a typical desktop system require?

Most PC ATX power supplies these days give the impression of being to be running in the 300 W field. A typical CRT monitor tends to draw almost 1 Amp (~120 W), an LCD monitor of the same size a bit smaller number. Peripherals like speakers and small network equipment tend to draw little power. Figuring on 450 VA for a typical desktop computer setup is pretty conservative. For a single machine plus small associated network equipment (for example, a DSL/Cable modem/router, wireless access point, etc.), buying a 600 VA UPS is often pretty temperate. Buying a bigger UPS will allow you to protect more equipment going forward.



Another word of warning, don't assume that power requirements enormity with compute power and number of peripherals, ESPECIALLY if they are different architectures. Sometimes elder equipment is less simplified and draws more power than more recent gear. This is espeically true with things approaching monitors, disks, etc.. On the other hand, as compute power increases, normally power consumption does too. The current crop of Pentium 4s draws much more power than, say, an antediluvian 386 did. This can be seen contained by the fact that contemporary PC power supplies are usually more powerful than matching devices were a few years ago
immediately you need 400w.

but if you want protect for a out-of-date one. you only involve 300w.