The M2 Ultra does not have notable differences when compared to the M1 Ultra and while you do get a solid performance uplift, especially in multi-core workloads, the results are not as pronounced that Apple would completely redesign the latest Mac Studio. This would be one reason why the newest iFixit teardown video found both models virtually identical, and you will see why.
Apart from the new M2 Max and M2 Ultra options, the design, cooler, and power supply all appear to be retained on the 2023 Mac Studio
The teardown video from iFixit was compiled as a YouTube Shorts, indicating that the latest Mac Studio had nothing new present inside that the team would have to make extensive efforts to shoot, edit and upload a lengthy video on. The host states that the updated hardware is ‘is completely indistinguishable’ from its predecessor, and when getting inside, the same process was followed as last time. This involved removing the bottom rubber foot, unscrewing the aluminum chassis, and getting access to the innards.
After separating the components and spacing them apart, iFixit found that Apple was using the same cooler, same power supply unit, and same heatsink, so nothing exciting came from this teardown. If you are wondering, Apple has once again ensured that you cannot upgrade the internal storage on your own, though you can remove the pre-fitted module. Sadly, the PCB and connectors of the PCIe storage module uses an uncommon form factor, so it is unlikely that you will easily find one in the market.
Assuming that you do, those will not come cheap, and there is still no guarantee that the Mac Studio will end up booting into macOS if you plug in the third-party storage. At this time, we do not know if iFixit will publish a detailed article on the 2023 Mac Studio teardown or upload a longer video, but given that the disassembly process was the same as last time, you are better off following the previous teardown clip of the first Mac Studio.
source https://wccftech.com/2023-mac-studio-ifixit-teardown/