As usual with every new Apple gadget, the team over at iFixit has decided to tear down the latest iPhone 4S – which officially comes out tomorrow in seven countries, albeit some customers have already managed to get their hands on it — to take a peek inside the improved hardware of Apple’s new iPhone. As a quick recap, the iPhone 4S represents a significant change from the iPhone 4 in terms of internal components: whereas the design is the same of the old-generation model, the 4S comes with a dual-core A5 processor, a new wireless system with “intelligent” antenna design capable of switching between two antennas, world phone capabilities for GSM roaming, and a new 8 megapixel camera sensor with backside illumination. We have already discussed how the iPhone 4S appears to be a great mix of hardware and software — on the iOS side, in fact, the device comes with exclusive access to Siri, a new voice assistant.

In their teardown, iFixit notes the iPhone 4S’ battery has an extra .05 WHrs over the iPhone 4. The iPhone 4S has, however, much power-consuming hardware than the older generation unit, which leads iFixit to believe “power consumption seems rather efficient” with 8 hours of 3G talk time, 6 hours of 3G browsing, and up to 10 hours of video/40 hours of music. The iPhone 4′s battery, part of iFixit’s teardown last year, featured 5.25Whr; the iPhone 4S does 5.3Whr with the same 3.7V polymer battery.

The iPhone 4S’s logic board seems to bear “a close resemblance” to its Verizon iPhone 4 counterpart; indeed, the iPhone 4S also shares the same exterior design of the older CDMA iPhone 4, which has little differences from the GSM iPhone 4. In taking a look at the logic board, iFixit notes the two major components are the new CPU and new 3G chipset from Qualcomm, listed below.

• Qualcomm MDM6610 chipset
• Apple A5 processor

As previously rumored, iFixit confirms the iPhone 4S has 512 MB of RAM – a marking on the A5 chip (“E4E4″) seems to confirm this. There was much speculation surrounding the iPhone 4S’ RAM as other rumors in the past claimed the new iPhone would have 1 GB of RAM — clearly that’s not the case.

Other chips identified on the logic board:

• Avago ACPM-7181 Power Amplifier
• Qualcomm RTR8605
• Skyworks 77464-20
• Toshiba THGVX1G7D2GLA08 16 GB 24 nm MLC NAND flash memory

Other notes of interest:

• Apple is using the same oscillating vibrator of the Verizon iPhone 4, rather than rotational electric motor found in the old GSM iPhone 4. This vibrator is softer and quieter than the GSM iPhone 4′s motor.
• The display assembly is similar to the GSM iPhone 4.

We’ll update this post with more details as iFixit uncovers more components during the tear down. For now, keep in mind that the iPhone 4S has a much improved processor, camera, same amount of RAM and completely re-engineered 3G system.

Following yesterday’s release of the new iMacs with Sandy Bridge processors and Thunderbolt technology, the guys over at iFixit immediately started tearing down a 21.5-inch model. In their official teardown article, available here, there are a few notes of interest: iFixit notes how, design-wise, nothing much has changed in the new iMacs, which can be opened in the same way of the old generation units by pulling off the magnetically-held glass and removing the screws holding the LCD in place. The display is manufactured by LG and it’s the same used in the previous-generation iMac. iFixit also gives the machine a 7/10 Repairability Score, noting that average users can easily replace RAM, but accessing the CPU and GPU requires to take out the whole logic board, which is described as a “tricky process.” The teardown also reveals the Thunderbolt connector is similar (but not the same) to the one found in the early-2011 MacBook Pros; one heat sink is reserved for the CPU, with the other assigned to the GPU. (more…)

Following the various teardowns of the iPad 2 we saw last week, Chipworks decided to take a closer look at the Apple A5, the dual-core processor that powers the iPad 2 and contributes to its impressive gain in speed and performance. Whilst Chipworks’ teardown isn’t something the average Apple geek would be able to fully appreciate (there’s some highly technical stuff in there, like microscopes and layers of aluminum being closely inspected), there are some interesting points worth mentioning.

By looking at the internal structure of the A5, Chipworks concludes it was manufactured by Samsung in spite of the rumors suggesting Apple would go with TSMC due to the competition arisen with Samsung in the cellphone and tablet market.

At  this scale even electron microscopes start to run out of steam, so not the clearest of images in either case, but good enough to see the similar shape of the transistor gates and the dielectric layers.  So at least this sample of the A5 is fabbed by Samsung, just as all Apple’s processor chips have been for the last while.

Other notes by Chipworks include the ARM cores with ~4.5 Mb of cache memory each, and the A5 being roughly twice the size of the old Apple A4 chip from the iPad 1. Just in case you had any doubts about the performances guaranteed by the A5, this teardown is here to confirm that Apple went with Samsung once again to produce a chip that’s twice the size, dual-core and optimized for a tablet’s battery life. [via TUAW]

And after the first unboxing photos and videos, here we have the first teardowns from iOS hardware experts iFixit and iFixyouri. The guys at iFixyouri are doing a live streaming teardown in collaboration with 9to5mac, they’re currently a heat gun to remove the front panel (which is attached with a lot of glue, as noticed by iFixit). (more…)

iFixit didin’t waste any time and, shortly after the release of the new MacBook Pros, tore down a 15″ model to see the changes performed by Apple in this revision. It turns out, not much. Most changes are visible in the logic board (quad-core processor, AMD GPU, Thunderbolt chip) and in the way the battery is attached to the laptop.

A few notes from the teardown below.

Battery life decreased from previous generations, as Apple is performing more accurate tests with more realistic estimates (their tests include Flash installed while browsing the web):

No pentalobe screws;

iFixit thinks Apple made some improvements to wireless performance under the hood;

Broadcom BCM4331 chip.

The RAM in this machine is PC3-10600 RAM. That’s the same RAM used in the 2010 revision of the 21.5″ and 27″ iMacs, but different from earlier Apple laptops. PC3-10600 RAM is backwards compatible with the PC3-8500 RAM in older MacBook Pro Unibody machines, but you can’t use PC3-8500 RAM in this machine

The wireless card bracket is aluminum, rather than the plastic in previous revisions. Perhaps this change was made for thermal reasons, as a visible pink thermal pad is used to transfer heat from the board to its aluminum bracket.

Holy thermal paste! Time will tell if the gobs of thermal paste applied to the CPU and GPU will cause overheating issues down the road.

That was fast, iFixit. As usual when a new Apple product comes out, these have taken a look at what’s inside the new beast from Cupertino, and here some interesting notes:

Apple apparently doesn’t want you inside this thing. They decided to use 5-point Security Torx to attach the lower case.

This battery is 35 watt-hours. Previous revisions of 13″ MacBook Air machines have included 37 or 40 watt-hour battery packs. Since this Air has a smaller screen and lacks a spinning hard drive, we’d expect run time to be somewhat better than earlier Airs.

Although in a different form factor, the new MacBook Air uses the same Broadcom Wi-Fi/Bluetooth chip as the current lineup of MacBook Pros.

You’re interested in a 27-inch iMac, but you’d rather fare for that additional solid state drive from a third party manufacturer in hopes to save money and gain performance speeds. Well hold your horses there Mac guy, we’ve got some disappointing news you’d be interested to hear regarding that bullet proof plan of yours.

(more…)