Silicon Motion Showcases Next Generation PCIe Gen5 SSD Controller and USB4 Portable SSD Controller at Computex 2025

Rhea-AI Summary

Silicon Motion (NASDAQ: SIMO) has unveiled two new SSD controllers at COMPUTEX 2025: the SM2504XT and SM2324. The SM2504XT is a PCIe Gen5 DRAM-less controller built on TSMC's 6nm process, delivering up to 11.5 GB/s sequential read and 11.0 GB/s write speeds while consuming under 5W - an 11% improvement in performance per watt over its predecessor.

The SM2324 is introduced as the world's first single-chip portable SSD controller with native USB4 support and built-in Power Delivery, capable of sequential read/write speeds up to 4,000MB/s and supporting storage capacities up to 32TB. Both controllers support the latest 3D TLC and QLC NAND technologies, targeting AI PCs, gaming systems, and portable devices.

Positive

• New SM2504XT controller achieves 11% better performance per watt compared to previous generation
• SM2504XT delivers high performance with 11.5 GB/s read and 11.0 GB/s write speeds while consuming under 5W
• SM2324 reduces BOM cost and simplifies design with its single-chip architecture
• Both controllers support latest 3D TLC and QLC NAND, enabling cost-effective solutions

Negative

• None.

Insights

Semiconductor Technology Analyst

Silicon Motion's new PCIe Gen5 and USB4 controllers establish technological leadership in high-growth SSD markets with superior power efficiency.

Silicon Motion's announcement of two new SSD controllers represents significant technological advancement in the company's product portfolio. The SM2504XT PCIe Gen5 controller, built on TSMC's advanced 6nm process, achieves impressive performance metrics (11.5 GB/s sequential read and 11.0 GB/s sequential write) while maintaining power consumption under 5W. Most notably, this represents an 11% improvement in performance-per-watt over previous generations—a critical metric as computing devices balance increasing performance demands with energy efficiency requirements.

The controller's support for both 3D TLC and QLC NAND positions it well in the expanding AI PC and gaming markets, where high-performance storage is increasingly essential. The DRAM-less design also offers cost advantages while maintaining competitive performance.

The SM2324 controller represents a more substantial innovation as the industry's first single-chip portable SSD controller with integrated USB4 support and Power Delivery capabilities. This integration significantly reduces component count and simplifies design for OEMs, potentially accelerating Silicon Motion's market penetration in the growing portable storage segment.

Both controllers address emerging market needs in AI-driven computing and high-speed portable storage solutions. By focusing on energy efficiency while delivering competitive performance, Silicon Motion is well-positioned against competitors like Phison and Marvell in the client SSD controller space. The technological differentiation demonstrated in these products reinforces the company's leadership in providing controller solutions that enable storage manufacturers to develop products with compelling performance, power, and cost characteristics.

TAIPEI, May 15, 2025 /PRNewswire/ -- Silicon Motion Technology Corporation (NasdaqGS: SIMO) ("Silicon Motion"), a global leader in designing and marketing NAND flash controllers for solid-state storage devices, today announced that it will showcase its broad portfolio of products including two new SSD controllers at COMPUTEX 2025. The first is the SM2504XT, an ultra-low power PCIe Gen5 DRAM-less controller offering industry-leading performance per watt. The second is the SM2324, the world's first true single-chip portable SSD controller supporting USB4 with built-in Power Delivery. Together, these innovations highlight Silicon Motion's leadership in enabling energy-efficient, high-performance SSD solutions for AI PCs, gaming systems, and portable devices.

SM2504XT Delivers High Performance and Low Power for AI-Driven Client SSDs

Built on TSMC's 6nm process, the SM2504XT delivers up to 11.5 GB/s sequential read and 11.0 GB/s write speeds, with random IOPS reaching up to 1.7M read and 2.0M write—all while consuming under 5W. Compared to the previous generation, it achieves an 11% gain on performance per watt and sets a new standard for power efficiency among PCIe Gen5 client SSD controllers.

Supporting PCIe Gen5 x4 and NVMe 2.0, the controller is ideal for DRAM-less SSDs in AI PCs, notebooks, and gaming systems. It also incorporates Separate Command Address (SCA) architecture for reduced latency, and supports the latest 3D TLC and QLC NAND—meeting the growing demand for cost-effective, high-performance, and energy-efficient SSD solutions.

SM2324 Delivers Integrated Simplicity for Next-Gen Portable SSDs

The SM2324 is the industry's first single-chip portable SSD controller combining native USB4 support with built-in Power Delivery controller. Delivering sequential read/write speeds of up to 4,000MB/s, optimized for 3D TLC and QLC NAND, the SM2324 supports storage capacities of up to 32TB. Its single-chip architecture reduces BOM cost and simplifies design, accelerating time-to-market for OEMs building compact, high-speed portable drives.

"At Silicon Motion, we're focused on delivering SSD controller solutions that lead in both performance and power efficiency," said Nelson Duann, Senior VP of Client & Automotive Storage Business at Silicon Motion. "With the SM2504XT, we're setting a new benchmark for PCIe Gen5 client SSDs with unmatched performance per watt, while the SM2324 redefines portable storage with a fully integrated single-chip USB4 solution. These technologies reflect our commitment to helping customers build faster, smaller, and more efficient SSDs for next-generation applications."

In addition to its latest client and portable SSD controllers, Silicon Motion will also showcase a broad portfolio of controller solutions at COMPUTEX 2025 targeting markets including automotive, AI smart phones, Datacenter/enterprise SSDs, and high-performance display interfaces. These offerings support a wide range of AI-driven applications, from intelligent vehicles and edge devices to cloud infrastructure and immersive user experiences. Visit us at Suite G0001 on 3F, Taipei Nangang Exhibition Center Hall 1.

About Silicon Motion:

We are the global leader in supplying NAND flash controllers for solid state storage devices. We supply more SSD controllers than any other company in the world—for servers, PCs and other client devices—and are the merchant market leader in controllers for eMMC/UFS mobile embedded storage used in smartphones, IoT and other applications. We also supply customized high-performance hyperscale data center and specialized industrial and automotive SSD solutions. Our customers include most of the NAND flash vendors, storage device module makers and leading OEMs. For further information on Silicon Motion, visit us at www.siliconmotion.com.

Corporate Media Contact:   Minnie Lin      Director of Marketing Communication      E-mail: minnie.lin@siliconmotion.com   Investor Contacts: E-mail: IR@siliconmotion.com   Sales Contact: E-mail: service@siliconmotion.com

 

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SOURCE Silicon Motion Technology Corporation

FAQ

What are the key features of Silicon Motion's new SM2504XT PCIe Gen5 controller?

The SM2504XT is an ultra-low power PCIe Gen5 DRAM-less controller built on TSMC's 6nm process, delivering 11.5 GB/s sequential read and 11.0 GB/s write speeds while consuming under 5W, with an 11% improvement in performance per watt.

What makes SIMO's SM2324 USB4 controller unique in the market?

The SM2324 is the industry's first single-chip portable SSD controller combining native USB4 support with built-in Power Delivery, offering speeds up to 4,000MB/s and supporting up to 32TB storage capacity.

What types of NAND flash does Silicon Motion's new controllers support?

Both the SM2504XT and SM2324 controllers support the latest 3D TLC and QLC NAND technologies.

What is the power consumption of SIMO's new SM2504XT controller?

The SM2504XT consumes under 5W while delivering high performance, with an 11% improvement in performance per watt compared to the previous generation.