EMMC is called Embedded MultiMedia Card, is a card that is the size of an SD card but has its controller, flash memory storage, and RAM cache.

It can be used in any kind of electronic device to store data, program settings, and more. . It's not only used in mobile phones but also cameras, music players, gaming consoles, and in many other devices.

What Is eMMC?

EMMC Hard Drive is memory storage that includes the controller which is responsible for taking care of programming issues, communication, and reading data from NAND Flash Memory. All these components are inside a single chip on your phone mainboard.

The manufacturing process is easier when you compare it with an SD card because there's no need to add external components such as NAND flash memory, RAM cache, and microcontroller. Anyhow when using eMMC you have to be careful not to physically damage them when opening your device or replacing a broken screen since it may lead you to lose all stored data permanently.

nAHC-based eMMC is a flash memory storage solution that's widely used in portable devices, such as cellphones, digital cameras, low-end laptops, tablets, and even some removable gadgets. EMMC may also be used on computers and laptops. There is one distinct feature about eMMC: by inserting a memory card into the laptop's memory card slot, you can increase the internal storage capacity of a laptop with EMMC.


There are two types of eMMC storage, which have different benefits depending on the device's needs. JEDEC e-MMC packages up to 8 GB capacity for low-cost and small form factor applications. Embedded MultiMediaCard 4.3 proposes a configurable interface that allows support for different MMC command sets to coexist with legacy SD memory cards in mobile devices requiring increased storage capacity, increased high-speed data throughput, higher shock resistance, and improved multimedia card compatibility. The raw NAND flash chip is mounted on a multi-chip package (MCP) substrate along with the controller, flash memory, and RAM cache components.


eMMC has both flash memory and a flash memory controller integrated on the same silicon die. It is composed of a kind of embedded storage solution with a MultiMediaCard interface, flash memory, and a master controller.

What Is SSD?


Solid-state drives (SSDs) are a type of storage device that uses integrated circuit assemblies as memory to store data persistently. They are often used in personal computers, enterprise servers, and other mobile devices, such as laptops or tablets because they have no moving parts and therefore incur less latency than a conventional hard disk drive (HDD), which has spinning platters and movable read/write heads. SSDs can be used for general storage, or to give additional solid-state storage capacity on machines where it is useful.

An SSD consists of electronic interfaces and flash memory components; the controller is integral to the whole SSD assembly. It is present on every single NAND chip in an SSD with multiple channels connecting each side of at least one chip, so a single SSD controller can access multiple chips.


An SSD offers much faster read/write speeds than an HDD and it has no moving parts, therefore making it more reliable. While an HDD is electromechanical, with devices to help locate data - such as heads that float above the spinning platters - an SSD does not have any of these components and never needs time to spin up to speed. All this makes for both faster operation and greater reliability thanks to fewer moving parts or failure points within the drive itself.


eMMC is an embedded flash memory card with a storage capacity of up to 256 GB, while SSDs can have a minimum of 500GB up to 1TB which has no real limit. Also, eMMC is faster but it's not as durable as SSDs which are known for their impressive quality and durability. Even though eMMC does not have moving parts, it still isn't as durable as an SSD because there are other components such as controller boards that tend to be less resistant than the metallic housing of an SSD drive. SD cards completely avoid this issue because they do not use solder connection points between the chips and the board, making them more robust against physical damage from mishandling. Also, the ECC technology implemented on SSDs and the wear-leveling algorithms used to reduce write amplification further protect against physical damage.


SSDs can be used as cache memory, where files are copied from disk storage to SSD memory for faster access; an SSD containing the OS boot partition is referred to as a solid-state drive (SSD). As such, this feature requires special support from operating systems. It was primarily implemented as a performance optimization for random read applications common in client computing, such as those used for web browsing and office productivity tasks. The first random-access mainframes were slow; IBM's 1964 System/360 Model 91 was initially advertised as having a maximum speed of one million instructions per second (MIPS) but achieved about 200 thousand instructions per second (KIPS). Solid-state memory was a desirable feature for improving the performance of these early systems.

Other detailed differences are listed as follows.

  1. eMMC and SSD enjoy different functions. eMMC is used as a temporary storage medium for a portable device while SSD is used as a permanent storage medium. You can choose one type of storage following your storage medium.
  2. eMMC and SSD enjoy the different performances. The eMMC runs faster for small file storage and retrieval. However, the SSD delivers better performance in large file storage. The maximum data transfer rate of eMMC is about 400MB/s while the maximum transfer rate of SSD is much higher than that of eMMC.
  3. eMMC and SSD have a different number of NAND gates. Both eMMC and SSD operated on the NAND principles which allow data to run faster but eMMC typically has only one NAND gate while SSD tends to have more NAND gates. In this way, SSD is faster in reading and writing compared to eMMC.
  4. eMMC enjoys much less storage capacity than SSD. EMMC usually has storage space of 32 GB and 64 GB although the size of 128GB is available. As for SSD, it boasts much more space. 128GB, 256 GB, 320 GB and 512 GB are available.
  5. eMMC and SSD differ in connections. eMMC is often directly soldered onto the motherboard while SSD drives are usually connected to the motherboard via the SATA interface. If your laptop has no SATA interface, you are supposed to use eMMC.