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Technology Stocks : Advanced Micro Devices - Moderated (AMD) -- Ignore unavailable to you. Want to Upgrade?

To: Petz who wrote (151791)	2/24/2005 7:59:08 PM
From: fyodor_	Read Replies (1) \| Respond to of 275872

Petz: 70W at the socket is probably equivalent to 45-50W at the CPU, so that kind of validates Tom's numbers. At one point I questioned whether his measurement took into account the multiphase nature of the voltage regulation circuit. There are multiple convoluted issues here, but active PFC (Power Factor Correction) helps significantly. Good power supplies today also have surprisingly high efficiences - I read a massive review recently, but I'm completely unable to find a link to it, unfortunately. It was a brilliant review with plenty of PSUs and hordes of graphs, including efficiencies at varying loads etc. As an end user, though, total system consumption is what matters. This is what determines the impact on your electricity bill and how fast the fans have to spin in order to remove the heat. -fyo