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  • gevorg - Wednesday, March 07, 2012 - link

    Is it still made on 45nm tech like A5, or they went down a step? Reply
  • tipoo - Wednesday, March 07, 2012 - link

    So that's the same GPU as the Vita, but with half the processor cores. I wonder if the per-core performance is up any on the A5X? Too early for A15 cores, but they could have brewed something up, or raised clocks with a die shrink. Reply
  • jeremyshaw - Wednesday, March 07, 2012 - link

    Given the rumor mill pointing the A6 chip being slated for the next iPhone, and the a5x being given a metal IHS, it's definitely possible this is a chip that will only make it to the tablet. Reply
  • zorxd - Wednesday, March 07, 2012 - link

    That would make sense because the next iPhone will need a faster CPU. Reply
  • name99 - Wednesday, March 07, 2012 - link

    I assume this is sarcasm, but there are presumably timing issues here --- the new core simply wasn't available in time.
    There will ALWAYS be better cores, faster baseband, more advanced WiFi, etc, just about ready. You either make a decision and ship with what's available, or you never ship. Real Engineers ship --- unlike blog commenters.

    If your primary reason for wanting a new iPad was a faster CPU, well, sorry, then you wait till next year (or maybe you get surprised by Apple doing a stealth CPU bump in six months, like they sometime do with Macs!) That's life.
    If your primary reason for wanting a new iPad was the better screen, well, that's still there.
  • ils - Wednesday, March 07, 2012 - link

    can't wait for Cortex A15 + Series 6 Rogue GPU :) Reply
  • Wolfpup - Wednesday, March 07, 2012 - link

    One thing I've wanted for quite a while is a really in depth article looking at these architectures and comparing them.

    I mean from what I know, it seems like:
    ARM 11 = 486
    A8 = Pentium 1
    A9 = Pentium 3-esque

    But I don't know for sure...I mean how is an A9 versus AMD's C50 at the same clocks? Are they actually comparable as the out of order execution + 2 integer units per core would have it seem?

    I feel like I know even less about both Nvidia's ultra mobile GPU part, and the SGX stuff, etc. Swear I heard somewhere that only part of the performance on the SGX 543 scales, and part remains the same as with 1, and either way I don't have a clue what they compare to.
  • tipoo - Wednesday, March 07, 2012 - link

    For a rough guestimate, Intels Atom SoC is supposedly within 10% of the performance of the netbook one, and beats dual core Cortex A9s in tests, so they're still behind Atom. The Atom itself was about as fast clock per clock and core for core as an early P4. Reply
  • tipoo - Wednesday, March 07, 2012 - link

    As for the GPUs, again its a very rough guestimate, but the MP2 could push about 12Gflops, the MP4 probably double that, and a low end integrated laptop chip like the Nvidia 9400M was around 54Gflops. Radeon 7970 is above 3 terraflops. Reply
  • hammerd2 - Thursday, March 08, 2012 - link

    SGX MP cores are almost perfectly scalar -

    If SGX 543 = 1 as a base, 543MP2 = 2, 543MP4 = 4, 543MP8 = 8 (x performance at same die size and clock speed)
  • ils - Wednesday, March 07, 2012 - link

    will 543MP4 enough to power 3D games @ 2048x1536 ?? Reply
  • name99 - Wednesday, March 07, 2012 - link

    No. Apple did not think of this and did not bother to test it. And if it's a problem, there is no way to run the screen at lower resolution because that's fancy 1980s technology that's way too sophisticated for a phone.

    Next inane question...
  • TopCat996 - Thursday, March 08, 2012 - link

    @ils: This is a tricky question, given you've mentioned "3D games" which includes in it's ambit just about anything from Frizbee World to Infinity Blade. If you would compare console quality graphics to what this iPad can offer- you'll be disappointed :/. IPad 1 & 2 have been weak on a few fronts - like doing transparency (alpha testing in very expensive) and per pixel operations ( these are what make 3D surface details acheiveable). Which means we can do extravagant skin shaders , massive volumetric effects etc. I think this might be an issue on the A5x as well with the higher native resolution inspite of the improved GPU resources.

    But i am sure good developers will do a good job at making good "looking" games on this one . As developers we make games targeted at a given platform - we cheat, devise, hand optimize code to get the best out of a platform. . And every hardware platform has its constraints. Getting around these constraints is the fun part - we don't crib as much as some other people. But dropping to lower than native resolution is pants :)
  • Henk Poley - Thursday, March 08, 2012 - link

    Quite clever how they hid that due to the larger screen it's a effectively a step back in graphics performance. Yes, it's 4x times as fast as Tegra 3. But it's only twice as fast as the old iPad, but has 4 times the pixels. So half the graphics speed of the old iPad. Reply
  • shiznit - Thursday, March 08, 2012 - link

    Only if games render at full resolution, which probably won't be necessary for 3D. Reply

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