Why is the SM2320-Based PSSD Better Than Traditional Enclosures with Discrete Chips?

Why is the SM2320-Based PSSD Better Than Traditional Enclosures with Discrete Chips?


In the competitive world of portable storage, performance, reliability, and efficiency are critical factors that users consider when choosing a solution. The SM2320-based Portable Solid State Drive (PSSD) offers significant advantages over traditional enclosures using discrete chips. This article will explore these benefits and provide a detailed comparison.

Introduction to the SM2320 Solution

The SM2320 controller from Silicon Motion is an innovative single-chip solution designed specifically for PSSDs. This design integrates the USB bridge and SSD controller into one chip, allowing direct data transfer from the USB-C interface to the NAND flash. This approach eliminates the need for intermediate conversions, which are typical in traditional enclosures.


In contrast, traditional enclosures utilize a discrete chip approach where data is transferred from USB-C to a bridge chip, then to an M.2 interface (which utilizes the NVMe protocol), and finally through the SSD controller to NAND flash. This additional step introduces extra heat and performance losses due to protocol conversion and data movement.

Key Advantages of the SM2320-Based PSSD

  1. Direct Data Transfer Path
    • Efficiency: The SM2320 solution facilitates direct data transfer from USB-C to NAND flash, eliminating unnecessary protocol conversions. This reduces heat generation and performance loss, ensuring maximum efficiency .
  2. Superior Performance
    • Speed: With support for USB 3.2 Gen2x2, the SM2320 controller offers sequential read and write speeds up to 2,100 MB/s and 2,000 MB/s, respectively. This high-speed capability is ideal for tasks requiring rapid data transfers, such as video editing and large file migrations. Traditional enclosures with discrete chips cannot achieve speeds as high as 2,000 MB/s, making the SM2320-based PSSD the clear performance leader .
  3. Enhanced Efficiency and Reliability
    • Power Consumption: The integrated design reduces power consumption and heat generation, enhancing efficiency and reliability. This is crucial for maintaining performance during extended use and in portable applications where power efficiency is essential  .
  4. Compact and Cost-Effective Design
    • Size and Cost: The single-chip integration reduces the PCB space required, resulting in a more compact and portable PSSD. Additionally, it lowers manufacturing costs by eliminating the need for separate bridge chips, making SM2320-based PSSDs more affordable without compromising on performance .
  5. Advanced Features for Data Integrity and Security
    • Data Protection: The SM2320 includes advanced features such as NANDXtend ECC, end-to-end data path protection, AES-256 hardware encryption, and support for TCG Opal 2.0 security standards, ensuring data integrity and robust security for sensitive information .

Comparative Table


SM2320-Based PSSD

Traditional Enclosure with Discrete Chips

Data Transfer Path

Direct USB-C to NAND flash

USB-C to bridge chip to NVMe to NAND

Sequential Read/Write Speed

Up to 2,100 MB/s / 2,000 MB/s

Typically lower, < 2,000 MB/s

Power Consumption

Lower, more efficient

Higher due to multiple components

Heat Generation


Higher due to protocol conversions

Size and Compactness

More compact due to single-chip integration

Larger due to multiple components


Lower manufacturing cost

Higher due to additional components

Data Protection Features

Advanced (NANDXtend ECC, AES-256, etc.)

Varies, often less comprehensive

Supported NAND Types

3D TLC, QLC, up to 4TB


Promoting Aiffro’s SM2320-Based Products

Aiffro’s P10 MagSafe Portable SSD exemplifies the advantages offered by the SM2320 controller. This product is designed to provide high-performance, reliable storage solutions suitable for both professional and personal use. Here are some of its key features:

  • High Performance: Equipped with the SM2320 controller, the P10 MagSafe Portable SSD delivers sequential read and write speeds up to 2,100 MB/s and 2,000 MB/s. This makes it perfect for data-intensive tasks such as video editing and large file transfers.
  • Efficiency and Reliability: The integrated design ensures lower power consumption and reduced heat generation, which enhances the overall reliability and efficiency of the device.
  • Compact Design: The P10’s compact size is achieved through the integration of the USB bridge and SSD controller into a single chip, making it easy to carry and ideal for on-the-go use.
  • Advanced Security: With features like NANDXtend ECC and AES-256 hardware encryption, the P10 MagSafe Portable SSD ensures data integrity and robust security, protecting sensitive information from unauthorized access.


Visit Aiffro to explore their range of high-performance PSSDs that leverage the cutting-edge SM2320 technology.


The SM2320-based PSSD is a game-changer in the portable storage market. Its direct data transfer path, superior performance, enhanced efficiency, compact design, and advanced features make it a far better choice compared to traditional enclosures with discrete chips. For those seeking the best in portable storage, Aiffro’s SM2320-based PSSDs, such as the P10 MagSafe Portable SSD, offer an unbeatable combination of speed, reliability, and security. By choosing SM2320-based PSSDs, users can enjoy faster data transfers, reduced power consumption, and greater reliability, making these drives the ideal solution for both professional and personal use.


En lire plus

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