The **M8R61FCJ-R** is a specific electronic component identifier typically associated with high-performance memory modules, specifically **DRAM (Dynamic Random Access Memory)** manufactured by **Micron Technology**. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. Component Overview The M8R61FCJ-R is primarily identified as a **DDR5 (Double Data Rate 5) SDRAM** component. This represents the latest generation of mainstream memory, offering significant improvements over DDR4 in terms of bandwidth, capacity, and power efficiency. ### 2. Technical Specifications | Feature | Specification | |:---|:---| | **Memory Type** | DDR5 SDRAM | | **Manufacturer** | Micron Technology | | **Density/Capacity** | Usually 16Gb (Gigabit) per die | | **Data Rate** | Typically 4800 MT/s to 5600 MT/s | | **Voltage (VDD)** | 1.1V (Nominal) | | **Package Type** | FBGA (Fine-pitch Ball Grid Array) | | **Interface** | POD11 (Pseudo Open Drain) | --- ### 3. Key Electronic Features * **On-Die ECC (Error Correction Code):** Unlike previous generations, DDR5 includes ECC directly on the silicon die. This manages bit-flip errors internally, enhancing system stability and reliability at high frequencies. * **Power Management Integrated Circuit (PMIC):** While the chip itself runs at 1.1V, DDR5 modules move power regulation from the motherboard to the DIMM itself via a PMIC. The M8R61FCJ-R is designed to interface efficiently with these localized power controllers. * **Dual 32-bit Subchannels:** DDR5 architecture splits the standard 64-bit data bus into two independent 32-bit channels. This improves memory access efficiency and reduces latency for multi-core processors. * **Increased Bank Groups:** It features a higher number of bank groups (usually 8), which allows for more efficient data "interleaving" and higher overall throughput. ### 4. Application and Usage These chips are typically found in: 1. **High-End Laptops/Desktops:** Used in SO-DIMM or UDIMM modules for Intel 12th Gen (and newer) or AMD Ryzen 7000 series systems. 2. **Server Infrastructure:** Employed in RDIMMs for data centers requiring high-speed data processing. 3. **Workstations:** For memory-intensive tasks like 3D rendering and scientific simulations. --- ### 5. Part Number Identification (General Micron Pattern) While "M8R61FCJ-R" is a specific production code (often referred to as a "FBGA Code" or "Marking"), it breaks down into: * **M:** Micron Brand. * **8R:** Generation/Architecture (DDR5). * **FCJ:** Specific revision, density, and configuration. * **-R:** Usually denotes the speed grade or temperature rating.