Before and after
The following photo first shows what a technician looks at when he takes a first look at the inner workings. On the left you can see the MacBook Air with Intel processor (recognizable by the fan), on the right the MacBook Air with M1, which exclusively uses passive cooling:
The same comparison photo is also available for the Intel and M1 generation of the MacBook Pro 13 “. Despite the fundamental architectural differences, the structure is very similar – no wonder, because large components such as the batteries and the cooling system dominate the overall picture.
Many identical parts
MacBook Air and MacBook Pro share many components, according to iFixit, because the main difference is in the cooling system. Incidentally, the main memory comes from Hynix, the SSD in all likelihood from Western Digital, and Apple also relied on Thunderbolt 4 Retimer type JHL8040R, power supply IC from Texas Instruments, in-house WiFi / Bluetooth modules and batteries from Siliconix.
But the heart of the new Macs is clearly the M1 chip. This works so efficiently that Apple can install batteries of the same size, but the runtime has increased by several hours. With the M1, the T2 chip is no longer needed, because its functionality is integrated in the M1.
iFixit draws a conclusion
Quiet, fast and interesting, these are the attributes that iFixit gives the new Macs. What at first glance might look as if Apple simply added a new chip to the old series is the result of many years of hard work. For repairs and upgrades, however, there is now even less scope than before. Outside the Apple network, it should no longer be possible to fix defects. Despite all the enthusiasm, this point is rather disappointing.