Teardown of Fourth-Generation iPad Reveals LG Display, A6X Chip, Lightning Connector

Close on the heels of its iPad mini teardown, iFixit has performed a similar procedure on the fourth-generation iPad. The new iPad is extremely similar to the previous model, with the main exceptions being the move to a more powerful A6X chip and a change to Apple's new Lightning connector.

ifixit a6x
Of most significant interest is of course the A6X chip, which would be an enhanced version of the A6 chip that debuted in the iPhone 5, with improved graphics to help drive the iPad's large Retina display. A date code on the A6X reveals that it was manufactured in the 37th week of 2012, which corresponds to mid-September, but a more detailed analysis of the A6X will need to wait for chip teardown experts such as those at Chipworks to get their hands on the part.

Other interesting discoveries include:

- The display is manufactured by LG, as opposed to the Samsung display found in the third-generation iPad torn down by iFixit. Apple does, however, source many of its components from multiple vendors, so it is unclear whether Apple has excluded Samsung from display production on the fourth-generation iPad.

- The logic board remains the same size as in the previous model, but Apple has tweaked the layout of some of the chips.

- The new Lightning port is housed in a frame that is equal in size to that of the 30-pin dock connector in the previous generation, meaning that Apple has not saved any interior space with the move to the Lightning connector. Apple will, however, almost certainly take advantage of the reduction in space needed for the Lightning connector in a more significant redesign for a future generation.

ifixit ipad 3 4 dock connectors
30-pin dock connector from third-generation iPad (top) and Lightning connector from fourth-generation iPad (bottom)

- The improved front-facing camera is slightly thicker than in the previous model, but fits into the same space within the device's body.

- The battery carries the same A1389 part number as in the third-generation iPad.

- Just like in the third-generation iPad, the fourth-generation model contains 1 GB of RAM housed in two Elpida chips separate from the A6X package.

Update: Chipworks has examined the A6X, finding that it is indeed a significant reworking of the A6 found in the iPhone 5, unsurprisingly focused on graphics capabilities.

This is not just an A6 with a couple minor tweaks. The A6 is 94mm2 while the A6X is 123mm2 – a full 30% larger.So where did that extra area go? Well, firstly, it did not go to the CPU core. The A6X uses the identical CPU to the A6. Same size, same layout. This is not surprising given that the prior CPU used custom layout techniques, and therefore it would be a huge amount of work to redesign so soon. Much of the extra area has gone to the GPU cores which are up from 3 to 4. More notable is that each of these GPU cores is much larger.On the A6X each GPU core is 8.7mm2 while the A6 GPU cores are only 5.4mm2. The overall area occupied by the A6X GPU cores is more than double that of the A6!

chipworks a6 a6x dies

Related Roundup: iPad
Buyer's Guide: iPad (Caution)
Related Forum: iPad

Popular Stories

iPhone 16 Pro Sizes Feature

iPhone 16 Series Is Just Two Months Away: Everything We Know

Monday July 15, 2024 4:44 am PDT by
Apple typically releases its new iPhone series around mid-September, which means we are about two months out from the launch of the iPhone 16. Like the iPhone 15 series, this year's lineup is expected to stick with four models – iPhone 16, iPhone 16 Plus, iPhone 16 Pro, and iPhone 16 Pro Max – although there are plenty of design differences and new features to take into account. To bring ...
maxresdefault

Apple's AirPods Pro 2 vs. Samsung's Galaxy Buds3 Pro

Saturday July 13, 2024 8:00 am PDT by
Samsung this week introduced its latest earbuds, the Galaxy Buds3 Pro, which look quite a bit like Apple's AirPods Pro 2. Given the similarities, we thought we'd compare Samsung's new earbuds to the AirPods Pro. Subscribe to the MacRumors YouTube channel for more videos. Design wise, you could potentially mistake Samsung's Galaxy Buds3 Pro for the AirPods Pro. The Buds3 Pro have the same...
iPhone 15 Pro Cameras

iPhone 17 Pro Max Will Be First Model to Feature Three 48MP Cameras

Thursday July 11, 2024 12:20 am PDT by
Next year's iPhone 17 Pro Max will feature an upgraded 48-megapixel Tetraprism camera for enhanced photo quality and zoom functionality, according to Apple analyst Ming-Chi Kuo. In his n-iphone-tetraprism-upgrade-ca62dd37e364">latest investor note published to Medium, Kuo said the key specification change would be a 1/2.6" 48MP CIS sensor, up from the 1/3.1" 12MP sensor expected to be used...
Beyond iPhone 13 Better Blue Face ID Single Camera Hole

10 Reasons to Wait for Next Year's iPhone 17

Monday July 8, 2024 5:00 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models simultaneously, which is why we sometimes get rumored feature leaks so far ahead of launch. The iPhone 17 series is no different – already we have some idea of what to expect from Apple's 2025 smartphone lineup. If you plan to skip...
primeday2020 feature3

The Best Early Prime Day Deals on Apple Products

Saturday July 13, 2024 6:23 am PDT by
Amazon is soon to be back with its annual summertime Prime Day event, lasting for just two days from July 16-17. As it does every year, Prime Day offers shoppers a huge selection of deals across Amazon's storefront, and there are already many deals you can get on sale ahead of the event. Note: MacRumors is an affiliate partner with Amazon. When you click a link and make a purchase, we may...
macbook pro january

Best Buy's Black Friday in July Sale Takes Up to $700 Off M3 MacBook Pro for Members

Monday July 15, 2024 11:05 am PDT by
Best Buy's "Black Friday in July" sale is in full swing today, and in addition to a few iPad Air discounts we shared earlier, there are also some steep markdowns on the M3 MacBook Pro. You will need a My Best Buy Plus or Total membership in order to get some of these deals. Note: MacRumors is an affiliate partner with Best Buy. When you click a link and make a purchase, we may receive a small...

Top Rated Comments

chriscrk Avatar
153 months ago
It reveals the lightning connector?! Never would have guessed!
Score: 19 Votes (Like | Disagree)
ipedro Avatar
153 months ago
Doesn't look like they used the extra space in this revision.

This reveals that the iPad 4 was only released to bring the Lightning connector to the entire iOS lineup and they might as well have added a faster chip.

I'll wait for the iPad 5 or the iPad mini 2 with retina display.
Score: 9 Votes (Like | Disagree)
SPEEDwithJJ Avatar
153 months ago
So Apple relies only on it's main competitor for it's top quality retina display, yet decides to have a less competitive, not threatening company produce it's lesser displays? Where's the logic in that?
Maybe the logic is that by buying from LG, Apple is able to acquire similar (or even slightly better, IMHO) quality displays from a "non-threatening" company at lower costs while at the same time reduce business dealings with its perceived No. 1 enemy (Samsung)? :confused:
Score: 8 Votes (Like | Disagree)
monkor Avatar
153 months ago
Good thing they saved all that room in switching to a lightning connector to add cool new features
Score: 7 Votes (Like | Disagree)
FactVsOpinion Avatar
153 months ago
So Apple relies only on it's main competitor for it's top quality retina display, yet decides to have a less competitive, not threatening company produce it's lesser displays? Where's the logic in that?

Actually no. LG is the company from which Apple is now getting their top quality retina display, whereas Samsung, from whom the display does not come, is their top competitor. The logic is right there!
Score: 6 Votes (Like | Disagree)
theanimaster Avatar
153 months ago
I realize that this is probably a non-issue, but as inexpensive as RAM is these days, why only 1GB of RAM? I remember when they finally went from 512MB to 1GB in the iPhone, RAM is ridiculously cheap these days and Apple certainly charges enough for their products it seems as though 1GB is not enough.

Because Apple isn't about being the best. It's about selling stuff. They create a demand for things like features etc. -- keeps people excited. Also turns some into rabid, frothing disgruntled users who thought they bought THE latest thing xx months/days ago. Why didn't they add a Retina Display either? Clearly Apple holds back on these things so that they can sell you the next iteration and say how revolutionary it is ... to have everything the prior model should have had.
Score: 5 Votes (Like | Disagree)