DDR5

H5CG34MEBDX030N

H5CG34MEBDX030N - DDR5 16Gb SDRAM Component | SK hynix | Server Memory

The SK hynix H5CG34MEBDX030N is a 16Gbit (2GB) DDR5 SDRAM component from the H5CG3 series, fabricated on SK hynix's 1b-nanometer-class DRAM process and housed in an FBGA surface-mount package. It operates from a low 1.1V supply and supports DDR5 data-rate classes for server-class memory subsystems. A DDR5 SDRAM is the fifth generation of the Double Data Rate synchronous DRAM standard defined by JEDEC. Unlike DDR4, DDR5 splits each rank into two independent 32-bit (or 40-bit with ECC) sub-channels per component/module, doubling effective channel concurrency and improving efficiency for multi-core server CPUs. In the memory hierarchy, the H5CG34MEBDX030N sits at the component level: DRAM die -> memory component -> memory module (RDIMM/LRDIMM/UDIMM) -> main-memory subsystem of a server or workstation. Key features of the H5CG3 series include the reduced 1.1V core I/O supply (approximately 23% lower operating voltage than DDR4's 1.2V), on-die ECC (ODECC) that corrects single-bit internal errors without host overhead, decision-feedback equalization (DFE) on the data receiver path, and the DDR5 sub-channel architecture that enables two independent half-width channels per module. On-die termination (ODT), CA training, and same-bank refresh management further improve signal integrity and bandwidth utilization at high data rates. Technically, the device uses a 16N/32N bank-group architecture with 16 banks across bank groups, and implements the DDR5 command/address encoding with dedicated VDDQ/VDD supplies (1.1V domains) plus a separate VPP 1.8V wordline boost supply for improved cell reliability. These features make it suitable for data-center RDIMM designs, AI and big-data compute nodes, and enterprise storage controllers. Typical applications include server main memory modules (RDIMM/LRDIMM for 2DPC configurations), cloud and AI accelerator host memory, and high-performance workstations requiring high-capacity DDR5 ECC-class memory. When designing with DDR5 components, ensure the PCB trace topology follows the DDR5 fly-by command/address routing and match data-line lengths within controller-specified skew; SPD configuration must reflect the exact die revision and DRAM configuration for reliable JEDEC-standard initialization. This page synthesizes verified web data, drop-in alternatives from the same SK hynix DDR5 family, and engineering design notes not found on distributor listings. Full electrical timings should be confirmed against the official SK hynix DDR5 component datasheet before design release.

K4RHE086VP

K4RHE086VP - Samsung 24Gb DDR5 DRAM | Samsung Electronics

The Samsung Electronics K4RHE086VP is a 24-gigabit DDR5 SDRAM component organized as x8, fabricated on Samsung's 1a-class (D1a) DRAM process node and packaged in a standard FBGA surface-mount package for server, client, and mobile memory subsystems. DDR5 SDRAM is the fifth generation of double-data-rate synchronous dynamic random-access memory, the dominant main-memory technology in computing hierarchies. It sits within the DRAM family alongside DDR4, DDR3, LPDDR4/5, and HBM, and functions as the primary working memory between the CPU and storage. DDR5 doubles the bank count per bank group versus DDR4, moves power management onto the module via a PMIC, and introduces on-die ECC to improve reliability at higher densities. Key features of the K4RHE086VP include its 24 Gb density, which enables higher memory capacity per chip and reduces component count on high-capacity DIMMs; the x8 organization, which suits server RDIMMs and embedded memory arrays; and Samsung's D1a process, which improves bit density and power efficiency versus earlier nodes. Samsung's DDR5 family supports the DDR5 interface standard with its associated speed bins for data rates in the multi-gigabit-per-second class (speed grade code [DATA_NEEDED: maximum data rate for this speed bin]). Architecturally, the device uses DDR5 core innovations including a 16n prefetch, dual 32-bit subchannel-capable DIMM topologies, on-die ECC (ODDE), and decision-feedback equalization (DFE) on the data path to sustain signal integrity at high data rates. Bank-group architecture shortens effective access latency and raises sustainable bandwidth for multi-core server workloads. Typical applications include data-center RDIMM and LRDIMM modules for cloud servers, high-performance client and workstation DIMMs, AI/ML training and inference memory pools, and networking equipment requiring high bandwidth per watt. The 24 Gb density is particularly valuable in 64 GB+ module builds where minimizing IC count improves power and reliability. Design consideration: DDR5 termination and routing demand tighter impedance control than DDR4; follow the Samsung DDR5 design guide for fly-by command/address routing and reference-voltage planning, and always confirm the exact speed bin and operating temperature range on the official datasheet before finalizing a BOM. This page consolidates verified distributor listings, same-brand drop-in alternatives from the Samsung DDR5 portfolio, and practical sourcing guidance not found in the manufacturer datasheet.