How does the iPad 4 double graphics performance, when it's still quad-core?

Discussion in 'iPad' started by yow., Oct 23, 2012.

  1. yow. macrumors member

    Joined:
    Aug 26, 2012
    #1
    The A6 doubled graphic performance over the A5 by increasing graphics cores by 50% (from 2 to 3 core), along with increasing clock rates (offset by process shrink).

    But the A6X has the same number of graphics cores as the A5X (both have 4). The A6X does not have hex-core graphics. So where is the graphics improvement coming from?
     
  2. Renzatic Suspended

    Renzatic

    Joined:
    Aug 3, 2011
    Location:
    Gramps, what the hell am I paying you for?
    #2
    The lame but factual answer? It's likely a better designed, more efficient chip. It's similar to how a single core on a Core2Duo is considerably faster than an equivalently clocked Pentium 4.

    ...though I doubt the difference between the A6 and A5x is really as big as they're making it out to be. It's probably a good deal faster, but twice as fast? Eh...
     
  3. nhlducks35 macrumors regular

    Joined:
    Jun 15, 2008
    #3
    The A6 also increased the clock speed of each core by 33%
     
  4. w00t951 macrumors 68000

    w00t951

    Joined:
    Jan 6, 2009
    Location:
    Pittsburgh, PA
    #4
    If it's comparable to the Cortex-A15 architecture, it'll also have dramatically improved memory throughput. That was the major limiting factor for chipsets such as the Tegra 3 and A5/A5X.
     

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