Blog: MLC vs. TLC: Which Is the Better SSD?

AC&NC has a host of storage solutions for your business, including SSDs. Solid-state drives, or SSDs, have revolutionized data storage with faster access speeds and more efficient power usage than traditional hard disk drives (HDDs). Though not all are created equal, there are several types of NAND flash memory used in SSDs. One choice is TLC vs. MLC performance. So, what is an MLC (Multi-level cell) SSD? And how does it compare to TLC (triple-level cell)?

How are MLCs and TLCs similar?

These common Solid State Drives like MLC and TLC share some key features.

Both TLC and MLC use a similar memory cell structure in which data is stored by trapping electrons in a floating gate within a transistor. MLC stores two bits per cell. TLC stores three bits per cell.

Both also can store more data per unit of space than the older Single-Level Cell (SLC) technology only stores one bit per cell. This makes them more cost-effective and ideal for use in devices that require high storage densities, such as SSDs.

Compared to traditional hard drives, both MLC and TLC consume less power, making them more energy-efficient and suitable for use in portable devices, such as laptops and tablets.

Both TLC and MLC require more advanced error correction techniques to ensure data reliability due to the increased number of bits stored per cell, which is helpful in keeping a high level of data integrity, and data safe from loss or corruption.

What is the difference between TLC and MLC Technology?

Although TLCs and MLC share some similarities, they also have several differences. Storage is one difference, as TLC stores three bits per cell, while MLC stores only two. This means that TLC can store more data per unit of space compared to MLC. Because each cell has a limit to how many times it can be written,  TLC is not as durable over time.

The performance of SSD TLC vs. MLC is one important area of difference. MLC typically offers faster read and write speeds compared to TLC due to its simpler structure and higher threshold voltage. This makes MLC better suited for use in high-performance SSDs and other devices that require fast data access.

TLC is generally less expensive to manufacture than MLC, due to its higher storage density and simpler cell structure. This makes TLC more cost-effective for use in consumer-grade SSDs and other devices where cost is a critical factor.

While both TLC and MLC require advanced error correction techniques, MLC generally offers higher reliability and data integrity compared to TLC. This is because MLC has a higher threshold voltage, which makes it less susceptible to errors caused by noise or interference.

What are the best use cases for TLCs?

TLC NAND flash memory technology is typically better suited for use in applications where cost is a critical factor and where high performance and reliability are not necessarily the primary requirements. Some specific use cases where TLC may be more suitable include:

TLC is commonly used in consumer-grade SSDs due to its lower cost compared to MLC or SLC. These SSDs are generally used in everyday computing applications, such as browsing the web, office productivity, and light gaming.

TLC is also used in USB flash drives, which are often used for data storage and transfer in consumer and business environments. Due to the lower cost of TLC, USB flash drives can be produced at a lower price point, making them more accessible to a wider range of users.

TLC is commonly used in memory cards for digital cameras, smartphones, and other portable devices, where cost is a critical factor, and where high write endurance is not necessarily required.

TLC is also used in cloud storage applications, where the focus is on storing large amounts of data at a low cost, rather than on high performance or write endurance.

What are the best use cases for MLCs?

MLC NAND flash memory technology is typically better suited for use in applications that require high performance, reliability, and write endurance. Some specific use cases where MLC may be more suitable include:

MLC is commonly used in enterprise-grade SSDs, which are designed for use in servers and other high-performance computing applications. These SSDs require high performance and write endurance, and MLC’s higher reliability and durability make it a more suitable choice than TLC or QLC (Quad-Level Cell) NAND.

MLC’s higher reliability and write endurance make it more suitable for use in industrial and automotive applications, where data storage and retrieval are critical, and where the environment may be harsh or challenging.

MLC is also used in high-performance computing applications, such as scientific research and data analysis, where the speed and reliability of data access are critical factors.

MLC is commonly used in content creation applications, such as video editing and graphic design, where large files need to be stored and accessed quickly and reliably.

Information is key when choosing between TLC and MLC SSDs. It is important to evaluate and consider the needs of the business as well as the benefits and drawbacks of each option. Let AC&NC help you sort out the details and help you choose the best device for your business needs.  Reach out to our team today!