Quote:
Originally Posted by glatt
You have been given those manufacturer provided numbers three times by my count, and you rejected them each time because you think the manufacturer is lying.
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Where did I say the manufacturer was lying? When marketing to people who make recommendations without numbers, then we routinely double power requirements. Current on each voltage - not watts - are the relevant numbers. But computer assemblers typically cannot do such calculations.
Point was not specifically power requirements of a GPU. The point is that recommendations without numbers are bogus. Your chart with numbers is consistent with previous numbers provided by others. The entire system consumes somewhere between 140 and 370 watts. Meaning a typical system never needed the 600+ watt PSU that so many recommend only using hearsay.
The chart does not say how much power a GPU actually consumes. And does not say what current requirements are for each voltage. It does not provide numbers sufficient for design (ie current for each voltage). But it demonstrates that some latest GPUs can require significantly more power.
Your numbers do demonstrate something interesting and useful. I have never seen a computer consume almost 500 watts instantaneously. I would have to dig further, but connectors have current limits. Implying that a system with the last two GPUs might exceed ATX connector limits. Might.
The chart of numbers is more consistent with what others measured (in "What is your desktop power usage while browsing these forums?") A typical GPU does not consume almost 300 watts. A system does. Most every system does not need the 600 and 900 watt supplies that so many recommend.
We would tell computer assemblers using the Radon 6990 or GE Force 590 that they need 1000 watt supplies. Because they do not know how to select hardware based upon what is relevant - current for each voltage.
You could have posted something 100% accurate. But without the associated numbers, it would be a useless recommendation. We still do not have enough information for design purposes. But your numbers confirm computers are not consuming 600 and 900 watts. Are not so hot as to toast bread.