DDR3 RAM 4GB 1600MHz PC3-12800 1.5V PC Computer Desktop DIMM Memory 240-Pin RAM

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DDR3 Ram 4GB 1600MHz PC3-12800 1.5V PC Computer Desktop DIMM Memory 240-Pin Ram

DDR3 (Double Data Rate 3) is the third generation of synchronous dynamic random-access memory (SDRAM) technology, offering several key characteristics:

1. Increased Bandwidth and Speed: DDR3 provides faster data transfer rates compared to DDR2. It typically operates at speeds ranging from 800 MT/s to 2133 MT/s. This improvement in speed translates to better performance for applications requiring high memory bandwidth.

2. Lower Power Consumption: DDR3 operates at a lower voltage (1.5V standard, with low-voltage versions at 1.35V and 1.25V) compared to DDR2's 1.8V. This reduction in voltage results in lower power consumption and heat generation, making it more efficient and suitable for mobile and energy-conscious applications.

3. Higher Density: DDR3 supports larger memory capacities per module, with common capacities ranging from 1 GB to 16 GB per DIMM. This allows systems to handle larger workloads and more demanding applications.

4. Improved Latency: While DDR3 has slightly higher latency compared to DDR2, the increased speed compensates for this, resulting in overall better performance. The typical CAS latency (CL) for DDR3 ranges from 9 to 15.

5. 8-bit Prefetch Buffer: DDR3 uses an 8n prefetch architecture, meaning it can transfer 8 bits of data per clock cycle per data pin. This improvement over DDR2's 4-bit prefetch contributes to higher data transfer rates and overall performance enhancements.

6. Enhanced Signal Integrity: DDR3 incorporates fly-by topology for command and address signals, which helps improve signal integrity and timing. This design reduces the complexity of motherboard trace routing and enhances overall system stability.

7. Backward Compatibility: DDR3 is not backward compatible with DDR2 due to different pin configurations, signaling voltages, and other electrical differences. However, its design improvements offer significant advantages in performance and efficiency.

Here are the key specifications and parameters of DDR3 (Double Data Rate 3) memory:

1. Data Transfer Rate:

   • Ranges from 800 MT/s to 2133 MT/s (Mega Transfers per second)
   • Common speeds include DDR3-800, DDR3-1066, DDR3-1333, DDR3-1600, DDR3-1866, and DDR3-2133

2. Memory Capacity:

   • DIMM (Dual Inline Memory Module) capacities typically range from 1 GB to 16 GB
   • Larger capacity modules may be available for specific applications

3. Voltage:

   • Standard operating voltage: 1.5V
   • Low-voltage versions available: DDR3L at 1.35V and DDR3U at 1.25V

4. Burst Length:

   • 8n prefetch (transfers 8 bits of data per clock cycle)

5. Latency:

   • CAS Latency (CL) typically ranges from 9 to 15
   • Example timings: CL9-9-9-24, CL11-11-11-28 (first number is CAS latency, followed by RAS to CAS delay, RAS precharge, and cycle time)

6. Modules and Pin Count:

   • 240-pin DIMM for desktops
   • 204-pin SO-DIMM (Small Outline DIMM) for laptops and small form factor computers

7. Bandwidth:

   • Theoretical peak bandwidth ranges from 6.4 GB/s (DDR3-800) to 17.0 GB/s (DDR3-2133) for a single module

8. Power Consumption:

   • Improved power efficiency compared to DDR2, partly due to lower voltage operation

9. Error Correction:

   • ECC (Error-Correcting Code) versions available for enhanced reliability, commonly used in servers and workstations

10. Refresh Rate:

    • Improved refresh schemes compared to DDR2, helping to maintain data integrity and performance