Those Apple Engineer’s really know how to pack a PCB. They’ve managed to fit almost everything onto the “top” of the main logic board. The 3Gs’ PCB makes the 3G’s PCB look sparse (the apostrophes were probably a little bit confusing there).
Let’s take a minute here to talk about the new Applications Processor Core. Apple has chosen to go from the ARM 11 Samsung S3C6400 to the ARM A8 Samsung S5PC100 with this device.
This is the single largest difference between the 3G and the 3Gs. Firstly the manufacturing process has been chopped from 90nm to 65nm. Pipeline depth has been boosted to 13 – stage from 8. More importantly the clock speed of this newer processor rolls in at 600MHz – opposed to the 412MHz core of the old – obsolete 
3G. Samsung has also doubled the quantity of L1 cache from 16 to 32KB.
Moving around the rest of the PCB – it’s easy to notice the similarities with the previous 3G device. The Power Amp wins once again went to Triquint and Skyworks. We also see the NAND flash going to Toshiba – which as far as phoneWreck is concerned is fairly surprising. The battery has been bumped from the previous 1150mAH to 1219mAH – a much needed upgrade. Only time will tell if Apple’s claim of increased battery life will hold. Once again the psuedo SRAM win goes to Numonyx. The BaseBand Processor appears to have similar markings to the previous 3G therefore we can assume it’s an Infineon. This has been paired with the Infineon PMIC. The Applications Processor mentioned Earlier (Samsung S5PC100) is paired with a PMIC courtesy of what appears to be NXP. It’s mounted with a DDR SDRAM coming in at 256MB.
Underneath the logic board we have a little surprise! A new combo chip from Broadcom (BCM4325) This puppy packs 802.11a/b/g and Bluetooth 2.1 (+EDR and FM). This is a fairly substantial change from the Marvel and CSR combo on the old – obsolete 3G.We’ve received some rumours and speculation about the other devices we weren’t able to ID. There is a guess from a few readers that the GPS chip may be the same as on the previous 3G – the Infinieon Hammerhead II. This may be true but the new package is a different size – this means that it could incorporate the compass hardware as well.
That said, we’ve had some rumours that the compass chip is the Asahi Kasei – AK8973. We’ll still have to do some more digging!
We’re currently in the process of performing a much more thorough analysis. Keep checking back for more details as they come – we’ll most likely be putting this device through it’s paces to see how it stacks up with the Palm Pre and BlackBerry Bold & Storm.
Thanks again to the wonderful people at ifixit for gracing us with these great photos! If you want to see how it’s taken apart, make sure to check out their teardown.
Stay tuned and keep wrecking!
Dr.Wreck
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