DDR4 SDRAM (Double Data Rate Fourth Generation Synchronous Dynamic Random Access Memory) is the latest generation of SDRAM technology that provides higher speed, greater bandwidth, and improved energy efficiency than its predecessor, DDR3 SDRAM.
The main improvements in DDR4 technology are achieved through changes in the architecture and manufacturing process, which result in a number of key differences from DDR3:
- Increased Memory Speed: DDR4 RAM has a higher memory speed than DDR3. It is designed to run at speeds ranging from 2133 MHz to 4800 MHz, whereas DDR3 RAM typically operates at speeds ranging from 800 MHz to 2133 MHz.
- Higher Bandwidth: DDR4 memory modules have a higher bandwidth, which means that they can transfer more data per second. DDR4 RAM can achieve up to 77.8 GB/s data transfer rate, which is almost twice the bandwidth of DDR3 memory.
- Increased Capacity: DDR4 RAM modules can have a maximum capacity of 16 GB per module, whereas DDR3 modules were limited to 8 GB. This allows for larger memory configurations and higher memory densities.
- Lower Operating Voltage: DDR4 RAM operates at a lower voltage than DDR3 RAM, which results in reduced power consumption and improved energy efficiency.
- Improved Error Correction: DDR4 RAM uses advanced error-correction technologies such as CRC (Cyclic Redundancy Check) and ECC (Error Correcting Code) to detect and correct errors in data transmission, providing greater reliability and stability in server applications.
- New Features: DDR4 RAM supports a range of new features such as burst length extensions, on-die termination (ODT), and data bus inversion (DBI), which contribute to improved performance and signal integrity.
PC4-19200 is a memory speed specification for DDR4 SDRAM (Double Data Rate Fourth Generation Synchronous Dynamic Random Access Memory) that refers to the maximum data transfer rate that can be achieved by the RAM module.
The PC4-19200 specification indicates that the DDR4 memory module is designed to operate at a clock frequency of 2400 MHz, with a maximum data transfer rate of 19.2 GB/s (gigabytes per second). This means that the RAM module can transfer up to 19.2 GB of data per second between the memory controller and the CPU.
To achieve this high data transfer rate, the DDR4 memory module uses a double data rate (DDR) architecture, which means that it can transfer data on both the rising and falling edges of the clock signal. This effectively doubles the data transfer rate compared to single data rate (SDR) memory.
PC4-19200 memory speed is ideal for high-performance computing applications that require large amounts of data to be processed quickly, such as gaming, video editing, and scientific simulations. It is also suitable for server applications that require high bandwidth and low latency, such as database management and virtualization.
It is important to note that the actual performance of a DDR4 memory module depends on several factors, including the CPU, the motherboard, the memory controller, and the operating system. Therefore, it is recommended to use DDR4 RAM modules that are compatible with the specific system requirements to ensure optimal performance and stability.
Understanding CAS Latency (CL) in RAMCAS latency (CL) is a measurement of the delay time between the memory controller sending a request for data and the RAM module responding with the requested data. It is an important specification to consider when selecting RAM for a computer system because it directly affects the memory performance.
The CAS latency is measured in clock cycles, which is the number of clock cycles required for the memory module to respond to a request from the memory controller. The lower the CAS latency, the faster the RAM module can respond to requests, resulting in faster data transfer rates and improved overall system performance.
For example, if a DDR4 RAM module has a CAS latency of 17 and is operating at a clock frequency of 2400 MHz, the total delay time would be 7.08 nanoseconds (17 / 2400 x 1000). If the same module had a CAS latency of 15, the delay time would be 6.25 nanoseconds, which is faster.
It is important to note that the CAS latency alone does not determine the overall performance of a RAM module. Other factors, such as memory speed, memory size, and memory type, also contribute to the overall memory performance.
Furthermore, higher speed RAM modules typically have higher CAS latency than lower speed RAM modules. This is because the memory module needs more time to perform operations at higher speeds. Therefore, it is important to balance the memory speed and CAS latency to ensure optimal performance for the specific system requirements.
General Information- Manufacturer: Dell
- Manufacturer Part Number: SNPCX1KMC/16G
- Type: Memory (Ram)
- Sub-Type: Pc4-19200
- Product Name: 16GB DDR4 SDRAM Memory Module
- Storage Capacity: 16GB
- Memory Technology: DDR4 SDRAM
- Number Of Modules: 1 X 16GB
- Memory Speed: 2400mhz DDR4-2400/PC4-19200
- Data Integrity Check: Ecc
- Features: Dual Rank, Unbuffered
- Cas Latency Timings: Cl17
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