Haswell chips could bring 50% more battery life to Apple's next-gen MacBooks

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  • Reply 101 of 106
    wizard69wizard69 Posts: 13,377member
    As long as the TDP is near-equivalent to what we have right now, that sounds fine.
    The interesting thing here is that TDP is nearly identical on the chips released today for the various ones likely to end up in Apple hardware. The U series loose a couple of watts. What makes these chips impressive is their ability to drop into and out of lower energy states very quickly and far more often than past Intel chips. This lead to vastly lower power usage on lightly loaded systems.

    So while running flat out the chips use just as much if not more power than previous models like Ivy Bridge. After all if the TDP is the same then the maxed out power usages will be very similar. The Haswell trick is that few systems ever run maxed out. As such the CPU can cut power usage by a surprising amount.
    I can't find the 765M on the wiki page. Is it a new chip?

    Did you check NVidia's site?

    One thing with Haswell, the benchmarking community is likely to be all over the map with these parts. Some will even see worst performance as far as battery lifetimes go. For Apple buyers it is probably best to wait to see how a specific machine fares when it comes out. At least after a bit of testing on the net you will know what to expect.
  • Reply 102 of 106
    tallest skiltallest skil Posts: 43,388member


    Originally Posted by wizard69 View Post

    Did you check NVidia's site?


     


    I didn't, because they never list power draw. In checking it now, I find the chip… but no power draw. image


     


    I'll check a benchmark site; they often list charts of that.

  • Reply 103 of 106
    wizard69wizard69 Posts: 13,377member
    I didn't, because they never list power draw. In checking it now, I find the chip… but no power draw. :lol:

    I'll check a benchmark site; they often list charts of that.

    I've just done a bit of reading up on the Haswell and it looks like it will be an excellent processor up grade if you are looking to extend battery life or need getter GPU performance. Better is relative to existing Intel GPUs though. Haswell still eaves a lot to be desired GPU performance wise though.

    In the end though this will be a huge impact on the AIR's. They should perform vastly better than existing AIRs to the point it will be like a new product.
  • Reply 104 of 106
    tipootipoo Posts: 1,158member

    Quote:

    Originally Posted by Tallest Skil View Post


     


    I didn't, because they never list power draw. In checking it now, I find the chip… but no power draw. image


     


    I'll check a benchmark site; they often list charts of that.



     


     


    It's a ~50 watt GPU. I guess they may go one rung lower to keep the wattage lower, maybe 750M which would be the same power draw as the 650 in the current 15". But these new Nvidia chips work differently, the manufacturer actually sets the TDP limits. Like you know how the rMBP 15" had a higher clocked 650M than the regular, and in fact higher than many 660Ms? They could do that the other way here, a 765M could turbo boost up to its maximum clock speeds when the cooling allowed it, while still staying nicely in the thermal confines whenever needed with the custom TDP. Haswell chips will do this as well, making things very interesting in the notebook space as cooling now even more directly affects performance, not just with throttling but with how long things stay in turbo boost states. 



    http://www.anandtech.com/show/6998/razer-announces-haswellbased-blade-blade-pro-gaming-notebooks


     


     


    Quote:


    If you’re counting, that’s a 37W CPU and a 50-60W GPU


     



     


     


     


     



    Quote:

    Originally Posted by SolipsismX View Post





    I hope you're right and it's done to help differentiate the MBAs from the MBPs once the MBA's go Retina, but at this point I don't think that it is likely the 13" MBP will get a dGPU since no 13" has ever had it. The last time Apple used a dGPU at or below that size was in the 12" PB.


     



    I don't think it will either, like I said my best hope is the 15"s all getting upgraded discreet GPUs, and the 13" getting that special integrated but still good performing GT3e part which some mystery system maker requested. My thinking was that if something like the above, in just an inch bigger diagonally and nearly as thin and light can house an entire 765M and have 6 hours battery life under normal use, surely the 13" rMBP (or regular) could use a cTDP limited GT3e paired with a quad. It may lose power more quickly under load, but Haswell would let it sip juice under most mobile use cases. 

  • Reply 105 of 106
    tipootipoo Posts: 1,158member


    And see, there's already an ultrabook class laptop with that special part with a 28 watt TDP combined with GT3/Intel Iris graphics. 



    http://www.anandtech.com/show/7035/asus-zenbook-infinity-hands-on-with-the-most-beautiful-notebook-at-computex



    T
    he 13" MBP using that would be interesting. 

  • Reply 106 of 106
    wizard69wizard69 Posts: 13,377member
    tipoo wrote: »
    And see, there's already an ultrabook class laptop with that special part with a 28 watt TDP combined with GT3/Intel Iris graphics. 

    http://www.anandtech.com/show/7035/asus-zenbook-infinity-hands-on-with-the-most-beautiful-notebook-at-computex


    T
    he 13" MBP using that would be interesting. 

    That indeed would make for an interesting 13" rMBP.

    One problem with these new chips is all of their different power savings modes. It makes quantifying how well any one implementation will work for you difficult. You can see this in benchmarks that are over the place. In the end people will just have to try a machine out I also expect that we will see more driver updates than usual.
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