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  1. #1
    who dares wins ;) joroooooo's Avatar
    Join Date: Oct:2007
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    Radeon R9 295X2


  2. #2
    Hardware KeepWalkinG's Avatar
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  3. #3
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  4. #4
    Banned
    Join Date: Jul:2008
    Location: tuk
    Posts: 3,408
    :

    "the R9 295x2 can overload the cables on your power supply, resulting in cables melting and a possible fire hazard"

    Also, the PCI-E port on the motherboard must be able to deliver 300 watts if it conforms to PCI-E 3.0 standards, not 75 watts. That's for the PCI-E 1.0 standard.

    300 + 150 * 2 = 600W = the peak you posted (do you have a source for that?)

    If you look HERE the 290x draws 390W peak, which is far beyond the suggested (and average on that site!) rating of 250W. The 295x is 2x 290x cards glued together basically, just on the same board. So the average power consumption should be around the double if not lower. Even with a peak of 780W, which indeed is a lot, it would still have to meet the requested standards of the card of 28A per PCI-E connector, which is the equivalent to (28A * 12V = 336W) per connector, which is still within the announced specs. 336 * 2 = 772, plus the 300W from the PCI-E 3.0 port, which results in 1072W of "requested" power use from the manual.

    Here's the link for the PCI-E 3.0 specs. Look at page 17


    R9 290X seasonic.

    The draw limit from the slot is actually specified at just 75 watts and technically it could just go slightly up. The pins on the slot can't go above 1.5 amperes each without burning (normally that's even less at 1.25A). Never mind that, most vanilla ATX boards are not capable of giving that much to the slot either (all 3.3v and 12v output from the ATX plug will not be enough to power all pci slots and peripherals).

  5. #5
    Exhumator's Avatar
    Join Date: Jan:2005
    Location: Sofia
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    ( )... , "/" 300W, , .
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  6. #6
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