Cortex A15: GPU Power Consumption - 3D Gaming Workload

ARM's Mali-T604 GPU is pretty quick, but similar to ARM's Cortex A15s it can definitely use a considerable amount of power to deliver that performance. Peak GPU power consumption tops out at just under 4W compared to ~1W for Qualcomm's Adreno 225. Even the Cortex A15s pull a decent amount of power in this test compared to the alternatives. It seems like that 4W max we keep seeing is likely the typical TDP for the Exynos 5250, anywhere from 1x - 4x what we get with Atom Z2760 and APQ8060A.

Task Energy - 3D Game 1 - Total Platform

Task Energy - 3D Game 1 - CPU Only

Task Energy - 3D Game 1 - GPU Only

The Mali-T604's performance advantage here comes at a price: total energy consumed is far higher than any of the competing solutions.

GPU Power Consumption - Max, Avg, Min Power

Max Power Draw - 3D Game 1 - Total Platform

Max Power Draw - 3D Game 1 - GPU Only

Max Power Draw - 3D Game 1 - CPU Only

Average Power Draw

Average Power Draw - 3D Game 1 - Total Platform

Average Power Draw - 3D Game 1 - GPU Only

Average Power Draw - 3D Game 1 - CPU Only

Minimum Power Draw

Min Power Draw - 3D Game 1 - Total Platform

Min Power Draw - 3D Game 1 - GPU Only

Min Power Draw - 3D Game 1 - CPU Only

Cortex A15: WebXPRT 2013 - Community Preview 1 Determining the TDP of Exynos 5 Dual
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  • gryer7421 - Friday, January 04, 2013 - link

    aaaand then looses where it matters, the rest of the platform. one more process shrink and both will be on even terms in cpu power usage and then as a whole platform will start punching arm in the face. Reply
  • Wolfpup - Friday, January 04, 2013 - link

    Huh? Did you read the article? Atom built on 32nm is competitive with ARM built on 28nm. Not only that, but it's looking like Haswell will realistically be able to compete here too, and we've got the second gen Atom coming up this year too...but TODAY'S Atom at an older process is competitive with ARM...what you're claiming is exactly the opposite of what the article says. Reply
  • JumpingJack - Friday, January 04, 2013 - link

    I don't think we are looking at the same data, overall Atom appears to uses the same or less power than Krait and offers better performance in general. Reply
  • Homeles - Friday, January 04, 2013 - link

    "Anyone with half a brain" would read the article before making such an idiotic statement. Reply
  • Rezurecta - Saturday, January 05, 2013 - link

    wow. Way to belittle Anand's hard work...

    Great article! One of the many reasons I love this site. :)
    Reply
  • Death666Angel - Friday, January 04, 2013 - link

    The Star Wars theme to play in my head! Thanks for that! :D Reply
  • Death666Angel - Friday, January 04, 2013 - link

    "I wonder what an 8W Haswell would look like in a similar situation."
    Me too. However, considering that they 17W ULV parts only reach those numbers by throttling as well, I don't expect a lot.
    Reply
  • carancho - Friday, January 04, 2013 - link

    Amazing work. Congratulations! A couple of presentation suggestions:

    Next time please smooth some of the most important charts. The volatility makes it hard to see where the averages are. Take this chart: http://images.anandtech.com/reviews/SoC/Intel/CTvK... it could really benefit to have another copy with some additional smoothing.

    Also, in power charts like this http://images.anandtech.com/reviews/SoC/Intel/CTvK... it would be helpful to have as a summary followup chart the power calculation done and presented as bar charts; otherwise we have to resort to calculate the differences in the areas below the lines with our eyes, and they can be deceiving.
    Reply
  • carancho - Friday, January 04, 2013 - link

    I hadn't reached the A15 part yet when writing this. Ignore the 2nd comment. Reply
  • amorlock - Friday, January 04, 2013 - link

    I'm frankly amazed and impressed that Intel can get Haswell down to 8W but it's hard to imagine it in a mid range mobile device because of the likely unit cost. The reason Atom has stagnated until recently is because Intel doesn't want to create a chip that cuts into it's very profitable mainstream CPU market. Reply

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