SK Hynix accelerates DDR5 memory beyond 8Gbps with MCR DIMM, the world’s fastest server modules

SK hynix has announced the development of server-class MCR DIMMs that feature memory modules rated at DDR5-8000 and beyond.

SK hynix Beings MCR DIMM development: Minimum 8Gbps DDR5 modules for servers

press release: SK hynix announced today that it has developed working prototypes of its DDR5 Multiplexer Combined Ranks (MCR) Dual In-Line Memory Module, the world’s fastest server DRAM product. The new product is confirmed to operate at a minimum data rate of 8Gbps, at least 80% faster than the 4.8Gbps of existing DDR5 products.

  • Data Rate Doubled (DDR), a DRAM standard used primarily for servers and client applications, has advanced up to the fifth generation. The MCR DIMM is a modular product with multiple DRAM chips attached to the board and improved speed as a result of running two DIMMs simultaneously.
  • Arrangement: A set of basic transport units for data sent to the CPU from a DRAM unit. Class usually refers to 64 bytes of data to be transmitted to the CPU as a packet.

MCR DIMM is a breakthrough that comes from out-of-the-box thinking with the goal of improving DDR5 overclocking. Challenging the notion that the operating speed of DDR5 depends on the speed of the DRAM chip itself, engineers have sought a way to improve the speed of modules rather than chips to develop the latest product.

SK hynix has designed the product in such a way as to enable simultaneous operation of two tiers by using the data buffer* installed on the MCR DIMM based on Intel MCR technology.

  • Buffer: A component that improves the performance of signal transmission between DRAM and the CPU. Primarily installed on server modules that require high performance and reliability
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By enabling simultaneous operation of two tiers, the MCR DIMM allows 128 bytes of data to be fetched to the CPU at one time, compared to the 64 bytes generally fetched in traditional DRAM modules. The increase in the amount of data sent to the CPU at a time supports a minimum data transfer rate of 8 Gbps, twice the speed of a single DRAM.

Close cooperation with business partners Intel and Renesas has been the key to success. The three companies worked together and collaborated throughout the process from product design to verification.

SK hynix Beings MCR DIMM development: DDR5 8Gbps minimum for 3 servers

Head of DRAM Product Planning at SK hynix, Sungsoo Ryu, said the achievement was made possible by the convergence of various technologies. “SK hynix’s DRAM modular design capabilities were met with Intel’s excellence in Xeon processor and Renesas buffer technology,” said Ryu. “For stable performance of MCR DIMMs, seamless interactions between the data buffer and processor inside and outside the unit is essential.”

The data buffer transmits multiple signals coming from the unit in the middle and the server CPU accepts and handles the signals coming through the buffer.

“SK hynix has introduced another technical development for DDR5 memory by developing the world’s fastest MCR DIMM,” said Ryu. “Our efforts to find technological breakthroughs will continue as we seek to establish our leadership in the server DRAM market.”

Intel and SK hynix are leading the way in memory innovation and developing high-performance, scalable DDR5 for servers, along with other key industry partners, said Dr. Dimitrios Ziakas, Vice President of Memory, I/O Technologies, Intel.

“The technology provided comes from years of collaborative research between Intel and key industry partners to produce significant increases in deliverable bandwidth for Intel Xeon processors,” he said. “We look forward to bringing this technology to future Intel Xeon processors and supporting multi-generational standardization and development efforts across the industry.”

This was stated by Samir Kopahalli, Vice President and General Manager of the Memory Interface Division at Renesas Renesas’ development of the data warehouse is the culmination of three years of intense effort from concept to production. “We are proud to be partnering with SK hynix and Intel in trying to turn this technology into a compelling product,” he said.

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SK hynix expects the MCR DIMM market to expand driven by high-performance computing that will benefit from increased memory bandwidth. SK hynix plans to bring the product into mass production in the future.

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