CPU Performance

As I mentioned before, the bulk of the innovation in the iPad mini is around form factor - the hardware platform itself is mostly a reuse of previous designs to keep costs low. The mini retains the 32nm A5r2 SoC as the iPad 2,4 and 5th gen iPod Touch. Despite the smaller size, it also uses the same 1GHz CPU clocks as its bigger brother. Performance is thus identical to the iPad 2,4, and a bit faster than the iPhone 4S. I found that the increase in clock speed does help to mask the fact that this isn't a Swift based platform, although going between the iPad mini and 4 does reveal an appreciable performance difference.


I
mage courtesy iFixit

We're still very limited in good, cross-platform CPU benchmarks. We, once again, turn to JavaScript tests run in the browser. For all of the tablets tested here we're using Chrome for Android and Mobile Safari for iOS.

SunSpider has been a part of all of our mobile performance testing for quite a while now. It's not the perfect benchmark, but the test ends up being a good measure of browser performance as well as cache latency and CPU performance.

SunSpider Javascript Benchmark 0.9.1 - Stock Browser

The iPad mini's two Cortex A9 cores running at 1GHz give it performance that is pretty much identical to the iPad 2 and 3, which also feature the same CPU. In the grand scheme of things however, the mini's performance is decidedly last generation. That's not to say that it's bad, it's just that the Swift based architecture in the A6/A6X is significantly better.

Google's Octane benchmark is a much larger test than SunSpider, but we're still looking at JavaScript performance. Octane includes all 8 of the tests from Google's older V8 benchmark but adds 5 new ones including a PDF reader, 3D bullet physics engine and portable 3D game console emulator all built in javascript.

Google Octane Benchmark v1

Here the mini shows its age a bit, but mostly because of its conservative CPU clock speeds. Google's Nexus 10 is finally able to flex its muscle here and show just what the Cortex A15 is made of, even outperforming Intel's Atom in the RAZR i. Also note the performance increase compared to the iPhone 4S/iPod Touch, that's purely due to the clock speed advantage (1GHz vs 800MHz). I don't believe Apple picked the wrong clocks for the A5 in the mini as battery life remains a primary concern for this device.

Finally we have Kraken, a seriously heavy javascript benchmark built by Mozilla. Kraken focuses on forward looking applications that are potentially too slow to run in modern browsers today. The result is much longer run times than anything we've seen thus far, and a very CPU heavy benchmark:

Mozilla Kraken Benchmark

Once again the mini equals the performance of the iPad 2 and 3, but remains appreciably slower than the iPad 4/iPhone 5. Google's Nexus 10 absolutely dominates in this test, continuing to outperform Intel's Atom based RAZR i.

A Retina mini? GPU Performance
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  • menevets - Friday, November 23, 2012 - link

    I own an iPad and debated between the Mini and the Nexus 7. I went with the Nexus 7.

    Without rooting, I can copy files from camera to external hard drive without resorting to wifi or buying anything extra. GPS, turn by turn voice navigation, offline maps, easy integration with Google tools like Mail, Picasa Web, YouTube, etc... I can see why someone would want a wider screen, but the narrower N7 can fit in more pockets and make for easier holding on the train. And in general, there is much more detail in settings.

    The N7 is sorely missing a rear facing camera. I like to photograph articles, documents, basically text. The 1.2 megapixel front facing camera is not enough to capture text clearly. The build quality is a little suspect, for example, the screen lifting problem.

    Jelly Bean, in general, may be more buttery smooth than its predecessors, but it is much easier navigating iOS, selecting text, scrolling, etc... iOS is much more responsive.

    Obviously iOS app selection is better, but I notice that Android equivalent apps are not as good. For example, the Kindle app on iOS, when you highlight a word on the bottom of the screen, the definition appears on the top, which allows you to alter the highlighting selection. The Android version, the definition covers the bottom so you can't change the highlighting selection. I noticed other instances of how the iOS app works better than its Android equivalent. Dropbox, Evernote for example.

    Google Play has a limited selection of movies and tv shows compared to iTunes/Amazon.

    So my use case for the big iPad is reading music scores from the piano, reading books with complex formatting, reading novels at home - fewer page turns, videos and apps I can't get on Android. The N7 for everything else.

    So the above N7 drawbacks for me are well worth the $130 savings.. Hope this helps others in their decision.
    Reply
  • Rodney McKay - Friday, November 23, 2012 - link

    I went to an Apple store today (Black Friday) planning to buy a 4th-gen iPad on sale. Though I hadn't yet seen a mini, I dismissed it out of hand because I "wanted a retina display". It happened that there was a mini next to a iPad 4 on display, so I compared them. The resolution difference wasn't really obvious to me (after all, the mini has a higher pixel density than the iPad 2), and in reading text (web pages, for example) I felt no clear preference. The mini's display was somewhat yellower/warmer than the 4's, which I didn't much care for. However, I opened Apple Maps on both, and was shocked to see that that the mini had a MUCH clearer display than the 4. On the mini, the smallest streets were clear at the zoom level where they appeared, but on the 4 they were so washed out as to be almost invisible. And in pretty much every other respect, the mini's Maps display looked better. I spent half an hour mucking with brightness and zoom levels trying to equalize the displays for a fair test, but no matter what I did the mini display was dramatically better.

    So, I tried an iPad 2 next to a 4, and got exactly the same results. The 2's display looked very much like the mini's (albeit larger), with map details much clearer than on the 4 (a *different* 4 from the one I compared to the mini, so this wasn't just a sample glitch with that particular iPad). I called over a store rep and showed him my results. He said "Hmm... but the Retina Display is better on things like photos and videos. Watch..." and he brought up the same sample image on both. We were both surprised to see that the image on the 2 was again dramatically nicer (less washed out, in particular) than on the 4, and at that point I realized that the real difference is that the 4's display has rather poor contrast (for which there is no adjustment), which would account for all the differences I observed.

    I very much prefer the Retina Display on my iPhone 4s (and my wife's 5) over the previous ones, but on the iPads it seems to be significantly flawed (at least with the two samples I tried). I left the store with an iPad mini, even though it was the only iPad not on sale today.

    I have a feeling that iPad reviewers haven't really been doing side-by-side comparisons between models. I dread the day when the iPad mini gets "upgraded" with a Retina Display--maybe I'll stock up on them now.
    Reply
  • SanX - Sunday, November 25, 2012 - link

    ROTFL go to the eye doctor
    usually only technical illiterates or salespeople having merchant interest write such bs
    Reply
  • miatadan - Saturday, November 24, 2012 - link

    I had the iPad 2 for a while and sold it as too large to take it with me daily. I purchased the wifi 32GB black model.
    It is the apps available for iOS that make the iPads attractive. I use n-Stream for Naim network player, use it as remote with Logitech app. Skype works well, Textplus for free texting nice.

    I tried Rim blackberry playbook, liked actual hardware but no apps I could use....

    Even with Targus case Mini iPad fits inside pocket of winter jacket when walking, hopefully once summer comes around I find summer jacket with large enough inside pocket.

    Regular iPads at work feel heavy now compared to Mini, so I agree with Anand.
    Reply
  • SanX - Sunday, November 25, 2012 - link

    You wrote "It pains me to say it, but compared to most similarly priced notebooks, the iPad mini's display is amazing."

    Should be "It pains me to say it, but compared to most similarly priced notebooks, the iPad mini's display is amazing trash. I really do not know what's went wrong with Apple and in which city dump near Cupertino they found such display"
    Reply
  • jameskatt - Sunday, November 25, 2012 - link

    The problem of going the Full Retina Display Route is that that is an even ultra higher resolution than the iPad 3-4. And the battery and GPU needed would make it heavier, larger, and more expensive. This is thus not the route.

    Apple can more easily make the iPad Mini like the iPhone 5: increasing the vertical resolution and not forcing existing apps to rerender. They just keep working as before but with letter-boxing. This solution would increase the resolution so it is Retina-like and would work with existing apps.
    Reply
  • MobiusStrip - Monday, November 26, 2012 - link

    Another idiotic glossy screen. Reply
  • iSee - Monday, November 26, 2012 - link

    These are also all reasons the iPad and iPhone can't have retina displays.
    Hm.
    Reply
  • Alex Veit - Wednesday, November 28, 2012 - link

    If you give someone $5 they will ask "why didn't you give me" $10.
    Just the fact that most applications that a few years ago could only be performed on a desktop or laptop are now being implemented in handheld devices is freaking awesome!!
    who cares about the minor dimension differences in between the devices.

    By the way, if you own an iPad and you want to get the most out of it http://d7a79zq53j51xd1830fjvzkexx.hop.clickbank.ne...">Click
    here to get some awesome stuff.
    Reply
  • EarthCore - Thursday, May 30, 2013 - link

    AnandTech "unbiased" tests always seem to be skewed toward Apple. The Nexus 7 can easily get 13+ hours runtime looping a 720p movie:

    http://forum.xda-developers.com/showthread.php?t=2...
    Reply

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