Silicon Motion at the 2025 Computex showed off its latest SSD and flash storage controller products. The star-attraction is the company's new SM2504XT, a DRAMless client NVMe SSD controller. The chip is built on the TSMC 6 nm process, with a power draw of just 2.4 W when active, and 1 mW when idling. The controller features 4 flash channels with 16 control elements, each with up to 3600 MT/s transfer speeds. It supports 3D TLC and 3D QLC NAND flash types from popular vendors. The reference SSD based on the SM2504XT was shown offering maximum sequential read speeds of 11.5 GB/s, and max sequential writes of 11 GB/s; with 1.7 million IOPS 4K random reads, with up to 2 million IOPS 4K random writes.

Next up, is the SM8366 enterprise SSD controller designed for PCI-Express Gen 5 x4 host interface across popular form-factors such as U.2, E1.S, and E3.S, including some extreme capacity drives. A demo drive showcased in the Silicon Motion booth had the NAND flash components spanning two PCBs that are interconnected by a ribbon cable. There are other interesting onboard devices such as DRAM cache, and capacitor-based power-loss protection. This controller was shown posting sequential read speeds of 14710 MB/s with QD128, and sequential writes of 3444 MB/s with QD128; and a sensational 3 million IOPS 4K random reads at QD512.Pictures of the SM8366 and its performance follow.

Silicon Motion Technology Corporation ("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 Gen 5 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 6 nm 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 5 W. Compared to the previous generation, it achieves an 11% gain on performance per watt and sets a new standard for power efficiency among PCIe Gen 5 client SSD controllers.