DDR4 SDRAM

From Server rental store
Jump to navigation Jump to search

```wiki

  1. DDR4 SDRAM Server Configuration: A Comprehensive Technical Overview

Introduction

This document provides a detailed technical overview of server configurations utilizing DDR4 SDRAM (Double Data Rate 4 Synchronous Dynamic Random-Access Memory). DDR4 has become the industry standard for server memory due to its improved performance, higher capacity, and reduced power consumption compared to its predecessors. This article covers hardware specifications, performance characteristics, recommended use cases, comparisons with alternative configurations, and essential maintenance considerations. This documentation is intended for server hardware engineers, system administrators, and IT professionals responsible for designing, deploying, and maintaining server infrastructure.

1. Hardware Specifications

A typical server configuration utilizing DDR4 SDRAM will consist of several key components. The specifications below represent a high-performance, mid-range server commonly deployed in data centers and enterprise environments. Variations exist based on specific vendor implementations and server models.

CPU

  • **Processor:** Dual Intel Xeon Gold 6248R (32 cores/64 threads per CPU)
   *   Base Clock Speed: 3.0 GHz
   *   Max Turbo Frequency: 4.0 GHz
   *   Cache: 38.5 MB L3 Cache per CPU
   *   TDP: 205W per CPU
   *   Socket: LGA 3647
   *   Supported Memory Types: DDR4-2933
  • **Chipset:** Intel C621A

RAM

  • **Type:** DDR4 ECC Registered DIMM (RDIMM)
  • **Capacity:** 256 GB (16 x 16GB DIMMs)
  • **Speed:** DDR4-2933 (PC4-23400)
  • **Rank:** Dual Rank (per DIMM)
  • **Latency:** CL19-19-19-45
  • **Voltage:** 1.2V
  • **Error Correction:** ECC (Error Correcting Code) – crucial for server stability. See Error Correction Code for more details.
  • **Memory Channels:** 8 (dependent on CPU and motherboard)

Storage

  • **Primary Storage:** 2 x 960GB NVMe PCIe Gen3 x4 SSD (Solid State Drive) in RAID 1 configuration. See RAID Configuration for details.
   *   Sequential Read: 3500 MB/s
   *   Sequential Write: 3000 MB/s
   *   IOPS (Random Read/Write): 400k/250k
  • **Secondary Storage:** 4 x 16TB SAS 7.2K RPM HDD (Hard Disk Drive) in RAID 5 configuration. Provides high capacity for archival and less frequently accessed data. See SAS Interface for details.

Network Interface

  • **Onboard:** Dual 10 Gigabit Ethernet (10GbE) ports. See Ethernet Standards for details.
  • **Add-in Card:** Quad 25 Gigabit Ethernet (25GbE) card for high-bandwidth networking.

Power Supply

  • **Redundant Power Supplies:** 2 x 1100W 80+ Platinum Certified. Provides redundancy and high efficiency. See Power Supply Units for details.

Motherboard

  • **Form Factor:** Dual-Processor Server Motherboard (e.g., Supermicro X11DPi-T)
  • **Chipset:** Intel C621A
  • **Expansion Slots:** Multiple PCIe 3.0 x16 and x8 slots for add-in cards. See PCIe Standards for details.
  • **Memory Slots:** 16 DIMM slots supporting up to 2TB of DDR4 memory.

Chassis

  • **Form Factor:** 2U Rackmount Server Chassis
  • **Cooling:** Redundant Hot-Swappable Fans

Detailed RAM Specification Table

Parameter Specification
Memory Type DDR4 SDRAM
Form Factor DIMM (288-pin)
Capacity (Total) 256 GB
Capacity (Per DIMM) 16 GB
Speed 2933 MHz
Rank Dual Rank
Latency CL19-19-19-45
Voltage 1.2V
Error Correction ECC Registered
Number of DIMMs 16
Memory Channels 8

2. Performance Characteristics

The performance of a DDR4-based server is heavily influenced by several factors, including CPU speed, memory speed, memory capacity, storage type, and network bandwidth. The configuration outlined above delivers robust performance suitable for demanding workloads.

Benchmark Results

  • **SPEC CPU 2017:** (Approximate results based on similar configurations)
   *   SPECrate2017_fp_base:  350
   *   SPECrate2017_int_base: 500
   *   SPECspeed2017_fp_base: 120
   *   SPECspeed2017_int_base: 180
  • **PassMark PerformanceTest 10:** Overall Score: 18,000 - 22,000 (depending on test configuration)
  • **Iometer (Storage):**
   *   Sequential Read (RAID 1 NVMe): 3400 MB/s
   *   Sequential Write (RAID 1 NVMe): 2900 MB/s
   *   4K Random Read (RAID 1 NVMe): 380,000 IOPS
   *   4K Random Write (RAID 1 NVMe): 230,000 IOPS

Real-World Performance

  • **Virtualization (VMware vSphere):** Supports up to 80-100 virtual machines with 4 vCPUs and 16GB RAM each. Performance is largely dependent on the specific workloads running within the VMs. See Virtualization Technologies for more details.
  • **Database Server (PostgreSQL):** Handles approximately 5000 concurrent connections with average query response times of under 50ms. Performance is optimized with appropriate database indexing and query optimization. See Database Management Systems for details.
  • **Web Server (Apache/Nginx):** Serves approximately 10,000 requests per second with average response times of under 100ms. Caching mechanisms are essential for maintaining high performance. See Web Server Software for details.
  • **High-Performance Computing (HPC):** Suitable for moderately complex simulations and data analysis tasks. For highly demanding HPC workloads, configurations with higher memory capacity and faster interconnects (e.g., InfiniBand) are often required. See High-Performance Computing for details.

Memory Bandwidth Calculation

The theoretical peak memory bandwidth can be calculated as follows:

Bandwidth = (Memory Speed in MHz) * (Data Width / 8) * (Number of Channels)

For our configuration:

Bandwidth = (2933 MHz) * (64 bits / 8) * (8) = 186,624 MB/s = 186.624 GB/s

This represents the *theoretical* maximum. Actual bandwidth achieved will be lower due to overhead and other system limitations. See Memory Bandwidth for further information.

3. Recommended Use Cases

This DDR4-based server configuration is well-suited for a wide range of applications:

  • **Virtualization:** Excellent for hosting virtual machines, providing flexibility and scalability.
  • **Database Servers:** Handles demanding database workloads with ease, benefiting from ECC memory for data integrity.
  • **Application Servers:** Provides a stable and performant platform for running business-critical applications.
  • **Web Servers:** Capable of serving high volumes of web traffic, especially when combined with caching mechanisms.
  • **File Servers:** Provides robust and reliable file storage and sharing capabilities.
  • **Small to Medium-Sized Business Servers:** A versatile solution for a range of business needs.
  • **Development and Testing Environments:** Provides a powerful platform for software development and testing.
  • **Data Analytics:** Suitable for moderate-scale data analysis tasks.

4. Comparison with Similar Configurations

The following table compares this DDR4 configuration with alternative options:

Configuration CPU RAM Storage Performance Cost (Approximate) Use Cases
DDR4 (This Configuration) Dual Intel Xeon Gold 6248R 256GB DDR4-2933 ECC RDIMM 960GB NVMe RAID 1 + 16TB SAS RAID 5 High $8,000 - $12,000 Virtualization, Databases, Application Servers
DDR3 (Older Generation) Dual Intel Xeon E5-2680 v4 128GB DDR3-1866 ECC RDIMM 480GB SSD RAID 1 + 8TB SATA RAID 5 Moderate $4,000 - $6,000 Basic Virtualization, Small Databases
DDR5 (Next Generation) Dual Intel Xeon Scalable Gen 3 512GB DDR5-4800 ECC RDIMM 1.92TB NVMe RAID 1 + 32TB SAS RAID 5 Very High $15,000 - $25,000 Large-Scale Virtualization, High-Performance Databases, HPC
AMD EPYC (Similar Performance) Dual AMD EPYC 7452 256GB DDR4-3200 ECC RDIMM 960GB NVMe RAID 1 + 16TB SAS RAID 5 High $7,000 - $11,000 Similar to DDR4 configuration, potentially better price/performance
    • Key Differences:**
  • **DDR3:** Offers lower performance and capacity compared to DDR4. Increasingly becoming obsolete.
  • **DDR5:** Provides significant performance improvements over DDR4, but at a much higher cost. Requires a compatible CPU and motherboard. See DDR5 SDRAM for more details.
  • **AMD EPYC:** Offers competitive performance and often a better price-to-performance ratio compared to Intel Xeon. Requires a compatible motherboard and can have different memory channel configurations. See AMD EPYC Processors for details.

5. Maintenance Considerations

Maintaining a server with a DDR4 configuration requires careful attention to several factors:

  • **Cooling:** DDR4 modules generate heat, especially at higher speeds. Ensure adequate airflow within the server chassis. Regularly check and clean fan filters. Consider liquid cooling for high-density deployments. See Server Cooling Systems for details.
  • **Power Requirements:** The server configuration outlined above requires significant power. Ensure the power supply units (PSUs) have sufficient capacity and redundancy. Implement a UPS (Uninterruptible Power Supply) to protect against power outages. See Power Distribution Units (PDUs) for details.
  • **Memory Management:** Monitor memory utilization regularly to identify potential bottlenecks. Utilize memory monitoring tools to track performance metrics. Ensure the operating system and applications are configured to efficiently manage memory. See Memory Management Techniques for details.
  • **ECC Memory Monitoring:** Monitor ECC error logs for indications of memory issues. Replace faulty DIMMs promptly to prevent data corruption.
  • **Firmware Updates:** Keep the server BIOS, firmware, and drivers up to date to ensure optimal performance and stability.
  • **Regular Inspections:** Periodically inspect all components for signs of wear and tear.
  • **ESD Precautions:** Always use electrostatic discharge (ESD) protection when handling memory modules. See Electrostatic Discharge (ESD) for details.
  • **DIMM Compatibility:** When replacing or adding DIMMs, ensure they are compatible with the motherboard and CPU. Consult the server documentation for a list of supported memory modules.

```


Intel-Based Server Configurations

Configuration Specifications Benchmark
Core i7-6700K/7700 Server 64 GB DDR4, NVMe SSD 2 x 512 GB CPU Benchmark: 8046
Core i7-8700 Server 64 GB DDR4, NVMe SSD 2x1 TB CPU Benchmark: 13124
Core i9-9900K Server 128 GB DDR4, NVMe SSD 2 x 1 TB CPU Benchmark: 49969
Core i9-13900 Server (64GB) 64 GB RAM, 2x2 TB NVMe SSD
Core i9-13900 Server (128GB) 128 GB RAM, 2x2 TB NVMe SSD
Core i5-13500 Server (64GB) 64 GB RAM, 2x500 GB NVMe SSD
Core i5-13500 Server (128GB) 128 GB RAM, 2x500 GB NVMe SSD
Core i5-13500 Workstation 64 GB DDR5 RAM, 2 NVMe SSD, NVIDIA RTX 4000

AMD-Based Server Configurations

Configuration Specifications Benchmark
Ryzen 5 3600 Server 64 GB RAM, 2x480 GB NVMe CPU Benchmark: 17849
Ryzen 7 7700 Server 64 GB DDR5 RAM, 2x1 TB NVMe CPU Benchmark: 35224
Ryzen 9 5950X Server 128 GB RAM, 2x4 TB NVMe CPU Benchmark: 46045
Ryzen 9 7950X Server 128 GB DDR5 ECC, 2x2 TB NVMe CPU Benchmark: 63561
EPYC 7502P Server (128GB/1TB) 128 GB RAM, 1 TB NVMe CPU Benchmark: 48021
EPYC 7502P Server (128GB/2TB) 128 GB RAM, 2 TB NVMe CPU Benchmark: 48021
EPYC 7502P Server (128GB/4TB) 128 GB RAM, 2x2 TB NVMe CPU Benchmark: 48021
EPYC 7502P Server (256GB/1TB) 256 GB RAM, 1 TB NVMe CPU Benchmark: 48021
EPYC 7502P Server (256GB/4TB) 256 GB RAM, 2x2 TB NVMe CPU Benchmark: 48021
EPYC 9454P Server 256 GB RAM, 2x2 TB NVMe

Order Your Dedicated Server

Configure and order your ideal server configuration

Need Assistance?

⚠️ *Note: All benchmark scores are approximate and may vary based on configuration. Server availability subject to stock.* ⚠️

Retrieved from "https://serverrental.store/index.php?title=DDR4_SDRAM&oldid=6288"