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Thread: Excelvan 1000W discussion

  1. #11
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    Received. Just need to find time to pull them open and take picture and put on the load tester. (Not necessarily in that order)

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    I started with the 1000W.

    So the PSU does not do 1000W, even at room temperature.

    But it didn't blow up either. It actually ran for a couple minutes and then shut down with a soft little "click". Cycled the power and reduced the load and tried again.

    Seems that the 1000W can do 800W at room temperature fairly continuously. And at a decent 82% efficiency as well.

    I'm going to open the unit up next.

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    IMPRESSIVE...

    given the price

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    Quote Originally Posted by ashiekh View Post
    IMPRESSIVE...

    given the price
    I see a price of 150 dollars for the 1000W version. I would call that extremely overpriced.

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    Quote Originally Posted by -The_Mask- View Post
    I see a price of 150 dollars for the 1000W version. I would call that extremely overpriced.
    60% off seems to have gone, plus the prices also went up

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    Quote Originally Posted by ashiekh View Post
    60% off seems to have gone, plus the prices also went up
    I guess that promo code will come back soon. The price of their item changes frequently and they will be on sale like per several days. I've been watching the price and stock quantity of their psu for about two weeks. They sold around 100 600W units just in 72 hours. Around 60 of them were sold during the $8 sale and the rest were sold at $19.99.

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    Quote Originally Posted by DAmio1st View Post
    How about the 750W unit? The seller provides a coupon that buy a 1000W then get a 750W for free. The 600W unit was on sale for $8 with free shipping two days ago but is still $19.99 now. Anyone bought one?
    Got that one too. That one's next.

    Come to think of it, the 1000W could never do 1000W. The label says it can only do 876W on the +12V rail. It has DC to DC, so that's going to take power from the +12V. So if you load up the +12V, you can't load the +3.3V or +5V. If you load up the +3.3V and +5V, you can't load up the +12V.

    Even if you add the -12V and +5VSB, you can't get 1000W.

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    Good to know, many thanks

    I remain impressed that the supply overloads gracefully, but with a fan running flat out all the time and these capacitors I am not sure it is a good deal; I'm too poor to buy cheap

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    Ok.. Results of the 1000W from the Chroma.....

    +5VSB efficiency is HORRIBLE. 40 to 50% efficiency depending on load. That said, the ripple on the +5VSB is amazingly low (like < 10mV).

    Hold up time failed miserably. < 10ms at 80% load. Of course, that was to be expected since the bulk caps are so small.

    Voltage regulation is "ok".

    Ripple noise suppression is quite good at < 20mV.

    Efficiency is the biggest short coming. It's "almost" Bronze.

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    Any idea yet where it actually comes from?

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