At Computex 2025, Realtek made a notable entrance into the competitive SSD controller space by showcasing two new products aimed at enhancing data transfer speeds and feature sets for both internal and external storage devices. The first is the RTS5781, a DRAM-less PCIe 5.0 NVMe controller, which Realtek claims achieves impressive random read and write speeds up to 10,000 MB/s, as demonstrated in CrystalDiskMark 8.0.4 benchmarks presented during the event. This controller leverages a 4-channel design and supports ONFi 5.1 and Toggle 5.1 3D TLC/QLC NAND, with I/O speeds reaching 3600 MT/s. It includes advanced power-saving capabilities and security protocols such as TCG OPAL 2.0 and AES 256, placing its random performance on par with existing DRAM-less SSD controllers. Although the RTS5781 appeared on roadmaps last year, Computex marks its official unveiling.
The second offering, the RM1220 controller, targets the high-speed external storage segment as a USB 3.2 Gen 2×2 20 Gbps controller. Comparable to Silicon Motion´s SM2322, the RM1220 operates without the need for a bridge chip, delivering read and write speeds of 2,100 MB/s and 2,000 MB/s respectively. These throughput figures position it ahead of Phison´s PS2251-18/U18 controller in terms of performance. Realtek differentiates the RM1220 with integrated features tailored for consumer appeal and enterprise needs, including an addressable RGB controller for gaming-inspired SSDs and native support for biometric security via an integrated fingerprint reader interface, which streamlines the addition of biometric security for external drives.
Through these new launches, Realtek signals a strong commitment to innovation in both the internal and external SSD markets. The RTS5781 aims to cater to high-speed, mainstream computing needs with robust security and efficiency, while the RM1220´s blend of performance, aesthetics, and security features targets portable SSD manufacturers looking to differentiate their products. These announcements highlight Realtek´s intention to reestablish itself as a key player in the evolving world of high-performance SSD controllers.
