The CPU

TI was one of the earliest partners with ARM on the Cortex A15 and silicon just came back from the fab at the beginning of this year. Even if Apple were similarly instrumental in the definition of the Cortex A15 architecture, it would be Q3 at the earliest before it could have working silicon available in volume. With no A15 design ready and presumably no desire to jump into the custom-designed ARM CPU market quite yet, Apple once again turned to the Cortex A9 for the A5X.

Apple confirmed that there are only two Cortex A9 cores on the A5X and it neglected to mention operating frequency. I suspect the lack of talk about CPU clocks indicates that they perhaps haven't changed. We could still be looking at a 1GHz max operating frequency.

Although we've speculated that Apple moved to a 32nm design with the A5X, it is entirely possible that we're still dealing with mature 45nm silicon here. It would explain the relatively conservative GPU clocks, although the additional GPU cores would balloon die size to 150 - 160mm^2 (roughly twice the size of Tegra 3). If A5X is 32nm, assuming a relatively conservative 80% scaling factor Apple would be able to maintain a die size of around 125mm^2, similar to the previous generation A5.

A quad-core CPU design does make some sense on a tablet, but only one that is either running heavily threaded workloads or is subjected to pretty intense multitasking. As we found in our iPhone 4S review, many iOS apps are still not very well threaded and have a difficult time utilizing two cores, much less four. On the multitasking front, Apple has enabled task switching but there's still no way to run two applications side-by-side. The most CPU intensive workloads on iOS still require that the app is active in the foreground for user interaction. Apps can work in the background but it's not all that constant/common, and again, they aren't pegging multiple cores. Apple built a very efficient, low overhead platform with iOS - it had to thanks to the hardware specs of the original iPhone. A result of iOS' low-overhead, very efficient design is expectedly low CPU utilization for most tasks. This is not to say that CPU performance isn't important under iOS, just that it's hard to find apps that regularly require more than a single core and definitely hard to find those that can benefit from more than two cores.

I will say though, Apple could easily add more cores if it wanted to spend the die area without a significant impact on power consumption. Remember that idle cores can be fully power gated, effectively reducing their power consumption while idle to zero. Apple could also assume a fairly conservative CPU governor and only wake up the third and fourth cores when absolutely necessary (similar to what we see happening with Tegra 3 on Android).

What about the Next iPhone?

Apple has traditionally used the iPad SoC in the subsequent iPhone release that followed later in the same year. It would make sense to assume that we'll see a smartphone version of the A5X SoC (at lower clocks) later this year. The A6? That'll probably debut next year with the 4th generation iPad.

Memory Capacity

Apple wouldn't let us run any third party applications on the new iPad so we couldn't confirm the actual memory capacity of the new model. On stage at the event, Epic mentioned that the new iPad has more memory and a higher output resolution than the Xbox 360 or PlayStation 3. The Xbox 360 has 512MB of memory, and Apple's A5/A5X has a dual-channel LPDDR2 memory controller. Each channel needs to be populated evenly in order to maintain peak bandwidth, which greatly narrows the options for memory capacity on the new iPad. 768MB would imply 512MB on one channel and 256MB on the other, delivering peak performance for apps and data in the first 512MB but lower performance for the upper 256MB. Given the low cost of DRAM these days, I think it's safe to assume that Apple simply went with two 512MB DRAM devices in a PoP configuration on the A5X for a total of 1GB of LPDDR2 memory in the new iPad.

4G LTE Support

Brian did an excellent analysis on the LTE baseband in the new iPad here. Qualcomm's MDM9600, a 40nm design appears to be used by Apple instead of the 28nm MDM9615. In hindsight, speculating the use of a 28nm LTE baseband for the new iPad was likely short sighted. Apple had to be in the mass production phase for the new iPad somewhere in the January/February timeframe. Although 28nm silicon is shipping to customers today, that was likely too aggressive of a schedule to make it work for an early-March launch.

Apple iPad Pricing
  16GB 32GB 64GB
WiFi $499 $599 $699
WiFi + 4G $629 $729 $829

Apple offers carrier specific iPad 4G models on AT&T and Verizon, although both versions can roam on 3G networks around the world. Apparently the iPad 4G isn't SIM locked, so you'll be able to toss in a SIM from other carriers with compatible networks. LTE data plans are available from AT&T and Verizon with no long-term contract:

iPad LTE Plan Pricing (Monthly)
  $14.99 $20 $30 $50
AT&T 250MB - 3GB 5GB
Verizon - 1GB 2GB 5GB

 

The Name

Apple surprised many by referring to the 3rd generation iPad simply as "the new iPad". The naming seems awkward today, but it's clearly a step towards what Apple does across many of its product lines. The MacBook Air, MacBook Pro and iPod all receive the same simple branding treatment; newer models are differentiated by a quietly spoken year or generation marker.

I still remember back several years ago when PC OEMs were intrigued by the idea of selling desktops based on model year and not on specs. Apple has effectively attained the holy grail here.

The GPU A Much Larger Battery
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  • Mike1111 - Friday, March 9, 2012 - link

    I think that a 2560x1600 11.6" Samsung tablet has a good chance of being announced in the next two months. And the specs will look great. But a 2560x1600 11.6" Samsung display will have a slightly lower ppi compared to the new iPad and it will be a Pen-Tile display, so the true ppi will be even lower. Reply
  • ZeDestructor - Friday, March 9, 2012 - link

    I'd say its most likely an LCD, so most likely a standard RGB matrix. Reply
  • steven75 - Sunday, March 11, 2012 - link

    A Samsung Android tablet at those resolutions will make for a lot of extremely scaled up phone apps. Sounds great! Reply
  • Mike1111 - Friday, March 9, 2012 - link

    Well, that's the difference between announcing and selling. Asus announcing the Transformer Infinity first doesn't really mean anything. In just a week Apple will sell millions of new iPads in various countries around the world while Asus still hasn't even announced a price or date of availability of even one SKU in one country. Reply
  • gorash - Friday, March 9, 2012 - link

    They will be selling Transformer Infinity. Reply
  • iSayuSay - Saturday, March 10, 2012 - link

    Of course Asus and Samsung will sell their next gen hi resolution tablet. The difference is Apple announcing new iPad, or in fact any of their product AFTER they are READY to sell it. They have the real stocks, ready to be distributed on their retail system, online or offline. Thus Apple makes money real fast, and here they are today, the most valuable company on earth!

    While Asus, Samsung, HP and most consumer technology company always babbling, panic, and showing off about what they are gonna do to face the competition, Apple or not. I wouldn't surprised if Samsung came with 2560x1600 resolution on 11" display. No doubt they're the king of LCD technology. But again, they just shows you news, issue, press release, maybe some bonky prototype months and months BEFORE they are ready to sell it. And it comes directly from company's PR. Again, they panic!!

    See the difference there, buddy? All will sell the product in the end, but not all will be bought by market. One is full of $hi1t and big mouth, the other is consistent, they only do when they are ready. That's a big difference dude!
    Reply
  • gorash - Saturday, March 10, 2012 - link

    Nice fanboyism, dude. Reply
  • Focher - Saturday, March 10, 2012 - link

    The "fanboy" / "fanboi" accusation is the new Godwin's Law. Reply
  • iSayuSay - Sunday, March 11, 2012 - link

    It's not fanboyism when it's true. Sure Apple rely on Samsung for some chips, components or display technology. But the way they market and sell product, is different.

    Maybe it's better for those tech companies to just shut up and steadily supply Apple for their iToys product, like Qualcomm. Because they make make more money that way, in a more respectable and elegant way. Because so far, their marketing team is just beat up n fails.
    Reply
  • medi01 - Sunday, March 11, 2012 - link

    It sure is better for apple, could increase their margins even further.

    But how on Earth is that better for customers? Does idiotic FUD have too much influence on you, so that you only consider buying from a single company? Oh well, good for you. But leave others alone.

    In smartphone market iOS to Android is about 1 to 3, and declining further. In a couple of years we'll have the same situation for tablets.
    Reply

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