Regular Raspberry Pi 4 Does not come with any onboard storage, but you can put a large-capacity microSD card inside or even Boot your Raspberry Pi from USB SSD. If you get a Raspberry Pi Computing Module 4, You can choose 8, 16 or 32GB of onboard eMMC storage, but what if you need more?
Raspberry Pi Fan Ivan Kuleshov came up with a unique and compelling answer. In order to get more onboard storage, the system engineer installed a 128GB eMMC module on his Raspberry Pi CM4.
“I did it,” Kulesov Tweet Earlier today, “Now I have a 128G Raspberry Pi CM4[B] eMMC is onboard. ”
In addition to sharing some images of his process of using CM4 under the microscope on Twitter, Kuleshov did not say much about his method of adding extra memory. There is no image of the soldering iron, but it seems that he removed the previous eMMC memory with a heat gun and soldered it on the new memory.
The Toshiba 128GB eMMC module used by Kuleshov provides impressive speed. In his tweet, he showed that it provides 80 MBps sequential read and 70 MBps write.even though The best Raspberry Pi microSD card Get speeds between 30 and 40 MBps.
Kuleshov did not say the exact model of eMMC storage he used. But after reviewing Toshiba’s eMMC product list, Kuleshov seems to use “THGBMHT0C8LBAIG”, which is a 128GB model that meets the requirements.
Toshiba’s product page The eMMC NAND flash memory device’s statement stated that it is a “reliable storage solution based on high-quality NAND memory and optimized controllers.”
Kuleshov did not mention what purpose he might use 128GB of onboard storage, but someone might use it for media servers, game consoles to store or save large amounts of machine learning data. Of course, with the correct carrier board, you can easily add high-speed storage to the CM4 without such hardware hacking. But what’s the fun?