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Thread: Corsair RM850 2019 review @ Tomshardware

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    Quote Originally Posted by ashiekh View Post
    A most excellent point, except that it is built to last 24/7 for the warretee period, and so with the fan running the whole time...
    Details.

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    Quote Originally Posted by Jon Gerow View Post
    Details.


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    Quote Originally Posted by Jon Gerow View Post
    Those PSUs only passed the 7 year testing.
    Some people doubt about today's super long warranty(10y+) competition, do you think that this is a reasonable choice and this trend will continue even after few years?

    Not sarcasm, just curious how manufacturers are thinking.

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    They need to deliver what the consumer wants, even if that means unnecessary bells and whistles (do power supplies really need decorative lighting?), so I think it is more how consumers are thinking. If a consumer judges a power supply by its warrantee, then that is a selling point, even if the supply will not actually last that long under full load. A 750W power supply under full load for the 10 year warrantee period will cost more than $7,000 in electricity, so few will push it this hard and a manufacturer can gamble on this; till the miners came along and a clause was then added to the warrantee to exclude this case.

    Now power supplies for system builders like Dell will have quite different criteria in regard to warrantee, features etc. For example, individuals may have brand loyalty, but a system builder will want to double source so they don't depend on just one supplier (assuming they go out of house for the item, which tends to be the case for power supplies).

    What manufacturer can test for 10 years? the design is obsolete long before the 10 years is up; so they extrapolate from one months testing.


    Just two months running a power supply at full load might cost as much in electricity as the supply itself cost new... so one can see how efficiency is becoming a bigger deal.


    Recently had to get a new refrigerator; salesman pointed out that they got efficiency at the cost of reliability, and that most refrigerators lasted about 10 years regardless of cost. Now I want both efficiency and reliability so when I found a fridge with a compressor warranted for 10 years (and had a very good energy star rating) that is the one I got. So I can see how long warrantees sell items and that this trend will continue.
    Last edited by ashiekh; 06-05-2019 at 01:29 PM.

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    Quote Originally Posted by ashiekh View Post
    Most impressive.

    A 750W supply run 24/7 for 7 years would consume over $5,000 of electricity; I assume the fans are rated for more than 50,000 hrs

    I apologize in advance for my fascination with cost today.
    Something not taken into consideration is that the burn in cabinets recycle the power produced by the PSUs.

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    Quote Originally Posted by Jon Gerow View Post
    Something not taken into consideration is that the burn in cabinets recycle the power produced by the PSUs.

    I was wondering about this and thought to suggest using inverters, but the idea got rather complicated. How is it done in reality?
    Last edited by ashiekh; 06-21-2019 at 04:38 PM.

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    Quote Originally Posted by ashiekh View Post
    I was wondering about this and thought to suggest using inverters, but the idea got rather complicated. How is it done in reality?
    I have no idea.

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    Quote Originally Posted by Jon Gerow View Post
    I have no idea.

    Now that I think on it, it is rather easy once one realizes that the solar power people feed back into the grid, using a grid-tie inverter.
    Last edited by ashiekh; 06-22-2019 at 12:30 AM.

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    Quote Originally Posted by ashiekh View Post
    Now that I think on it, it is rather easy once one realizes that the solar power people feed back into the grid, using a grid-tie inverter.
    Yeah. Using the same method as an ATE is out the window since that takes the power is just converted to heat. Somehow the PSU is used to "charge" another system and then that power is converted to AC and fed back to the grid. So we end up only paying for the loss of power.

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    How about su'scon cap?

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