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Power Consumption

AMD Radeon HD 7870 And 7850 Review: Pitcairn Gets Benchmarked
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The Radeon HD 7900- and 7700-series cards have already shown us the 28 nm manufacturing node’s implications for power. AMD claims its 7800s are similarly efficient.

At idle, sitting on the Windows 7 desktop, both 7800s deliver the lowest system power results of the cards we tested.

In addition to their low active idle power, the 7000-series Radeons benefit from a suite of features collectively referred to as ZeroCore. When a display connected to one of these cards drops into standby mode, the card is able to spin down and shed another 10 W or so of power consumption. Compare the Radeon HD 7800s to Nvidia’s GeForce GTX 580, which drops a single watt, and still consumes more than 40 W as our test PC sits idle. 

AMD’s Radeon HD 7870 uses significantly less power than Nvidia’s GeForce GTX 580, while achieving similar results. That comparison typifies what we’ve seen from some of the other 7000-series boards: competitive performance at markedly lower power.

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  • 1 Hide
    jamesedgeuk2000 , 5 March 2012 16:31
    Quote:
    The Radeon HD 7800s don’t do particularly well in World of Warcraft, finishing behind their respective predecessors, albeit just slightly. More importantly, they succumb to the comparable GeForce cards they’ve been matching pace with up until now.


    WoW favours Nvidia hardware over ATi, its always been this way.
  • 1 Hide
    HEXiT , 5 March 2012 22:10
    still no absolute reason to change from my 5870... come on amd thats 2 generations of cards and neither have given a significant enough increase to warrant a replacement.
  • 1 Hide
    Tab54o , 5 March 2012 23:27
    jamesedgeuk2000WoW favours Nvidia hardware over ATi, its always been this way.


    Yeah but the question is why would anyone be buyng one of these cards to play Wow in the first place?
  • 0 Hide
    wild9 , 6 March 2012 18:18
    fufussMore importantly, they succumb to the comparable GeForce cards they’ve been matching pace with up until now.

    That's the problem with annoying bots like fufuss.. they can't see benchmark graphs.