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http://takaman.jp/D/index.html?english

Anything that doesn't estimate individual rails is essentially useless.  Total wattage is not a useful measure of a power supply.

<{POST_SNAPBACK}>

Quoted for truth.

In addition to being fairly inaccurate (or at least far too generic. 25W for a HDD? HA, 8W-12W read write for most IDE/SATA drives, over 30W at spinup for the same drives), the lack of specific rail breakdowns makes it worthless.

Especially considering most modern computers draw between 75 and 90% of their power from the 12V rail.

What good is recomending at 300W PSU if you go buy one with 12A @12V for a 6600GT and a Venice chip? ( Which can easily need 15-18A @ 12V depending on drives and fans)

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