Random Access Memory (RAM) stands as an indispensable pillar within modern computing systems, facilitating swift storage and retrieval of data by the CPU (central processing unit). Its primary role involves the temporary housing of data and instructions essential for the CPU's frequent access during program execution. RAM empowers rapid read and write operations, crucial for seamless application execution, multitasking, and overall system efficiency. RAM technology has undergone significant evolution, with Double Data Rate (DDR) memory emerging as a prominent standard. Nonetheless, it's important to note that RAM remains volatile, meaning it loses stored information upon power loss.

DDR5, was introduced in 2020. DIMM: 288-pin, SO-DIMM: 260-pin.

Friendly Name	Industry Name	Transfer Rate	Data Transfers	OLD WEB
DDR5-4000	PC5-32000	32000 MB/s	4000 MT/s	Find
DDR5-4400	PC5-35200	35200 MB/s	4400 MT/s	Find
DDR5-4800	PC5-38400	38400 MB/s	4800 MT/s	Find
DDR5-5200	PC5-41600	41600 MB/s	5200 MT/s	Find
DDR5-5600	PC5-44800	44800 MB/s	5600 MT/s	Find
DDR5-6000	PC5-48000	48000 MB/s	6000 MT/s	Find
DDR5-6200	PC5-49600	49600 MB/s	6200 MT/s	Find
DDR5-6400	PC5-51200	51200 MB/s	6400 MT/s	Find
DDR5-6800	PC5-54400	54400 MB/s	6800 MT/s	Find
DDR5-7200	PC5-57600	57600 MB/s	7200 MT/s	Find
DDR5-7600	PC5-60800	60800MB/s	7600 MT/s	Find
DDR5-8000	PC5-64000	64000MB/s	8000 MT/s	Find

DDR4, was introduced in 2014. DIMM: 288-pin, SO-DIMM: 256-pin.

Friendly Name	Industry Name	Transfer Rate	Data Transfers	OLD WEB
DDR4-2400	PC4-19200	19200 MB/s	2400 MT/s	Find
DDR4-2666	PC4-21300	21300 MB/s	2666 MT/s	Find
DDR4-2933	PC4-23400	23400 MB/s	2933 MT/s	Find
DDR4-3000	PC4-24000	24000 MB/s	3000 MT/s	Find
DDR4-3200	PC4-25600	25600 MB/s	3200 MT/s	Find
DDR4-3600	PC4-28800	28800 MB/s	3600 MT/s	Find
DDR4-4000	PC4-32000	32000 MB/s	4000 MT/s	Find
DDR4-4400	PC4-35200	35200 MB/s	4400 MT/s	Find

DDR3, was introduced in 2007. DIMM: 240 pins, SO-DIMM: 204 pins, micro-DIMM: 214 pins.

Friendly Name	Industry Name	Transfer Rate	Data Transfers	OLD WEB
DDR3-800	PC3-6400	6400 MB/s	800 MT/s	Find
DDR3-1066	PC3-8500	8533 MB/s	1066 MT/s	Find
DDR3-1333	PC3-10600	10667 MB/s	1333 MT/s	Find
DDR3-1600	PC3-12800	12800 MB/s	1600 MT/s	Find

DDR2, was introduced in 2003. DIMM: 240-pin, SO-DIMM: 200-pin, micro-DIMM: 214-pin.

Friendly Name	Industry Name	Transfer Rate	Data Transfers	OLD WEB
DDR2-400	PC2-3200	3200 MB/s	400 MT/s	Find
DDR2-533	PC2-4200	4266 MB/s	533 MT/s	Find
DDR2-667	PC2-5300	5333 MB/s	667 MT/s	Find
DDR2-800	PC2-6400	6400 MB/s	800 MT/s	Find
DDR2-1000	PC2-8000	8000 MB/s	1000 MT/s	Find

DDR1, was introduced in 2000. DIMM: 184-pin, SO-DIMM: 200-pin, micro-DIMM: 172-pin.

Friendly Name	Industry Name	Transfer Rate	Data Transfers	OLD WEB
DDR-200	PC-1600	1600 MB/s	200 MT/s	Find
DDR-266	PC-2100	2100 MB/s	266 MT/s	Find
DDR-300	PC-2400	2400 MB/s	300 MT/s	Find
DDR-333	PC-2700	2700 MB/s	333 MT/s	Find
DDR-400	PC-3200	3200 MB/s	400 MT/s	Find

The evolution of DDR memory traces back to the early days of computing when the need for faster and more efficient memory solutions arose. The first generation of DDR memory, DDR1, was introduced in 2000. It offered significant improvements over its predecessor, Single Data Rate (SDR) memory. The introduction of DDR memory offered a “Double Data Rate” interface, meaning it could transfer data on both the rising and falling edges of the clock signal. Hence, the effective data transfer rate was double the memory clock speed.

DDR1 quickly became the standard for desktops and laptops, offering better performance supporting up to 400MHz and higher capacities of 1GB per module.

Following DDR1, subsequent generations of DDR memory continued to push the boundaries of performance and efficiency. DDR2, released in 2003, increased data transfer rates of speeds up to 800MHz and module sizes of 8GB, 8 times greater than DDR1.

Introduced in 2007, DDR3, further improved data transfer rates again, reaching speeds up to, 2133MHz, and improved energy efficiency, making it suitable for a wide range of computing devices, including desktops, laptops, and servers. DIMM′s could now support a capacity of 16GB per module. The DDR3 standard was used the longest out of all the current standards, from 2007 till 2014.

In 2014, DDR4 entered the scene, offering even higher data transfer rates as high as: 3200MHz, and increased memory capacities of 64GB per DIMM. DDR4 quickly became the standard for high-performance computing systems, including gaming PCs, workstations, and enterprise servers.

In 2020, the fifth generation of Double Data Rate Synchronous Dynamic Random-Access Memory (DDR SDRAM), was officially released. This new memory technology offers improved performance that scales better with high core CPU′s, allowing data transfer rates up to 8400MHz, memory capacities with an individual DIMM being able to reach 512GB. DDR5 utilises a 288-pin DIMM form factor and brings a whole range of new features that modern operating systems can gain significant performance improvements from.

DDR memory has evolved significantly since its inception, offering faster data transfer rates, lower power consumption, and higher capacities with each new generation. From DDR1 to DDR5, each iteration has contributed to the advancement of computing technology, enabling more powerful and efficient computing systems across various applications and industires.

ECC (Error-Correcting Code) memory includes extra bits for parity and checksum data, enabling it to detect and correct single-bit errors during data storage or transmission. This maintains data integrity, prevents system crashes or data corruption. Non-ECC memory lacks this error detection feature, making it less reliable. ECC memory is commonly used in critical systems like servers and scientific workstations. While it may introduce a slight performance overhead, its benefits in reliability outweigh this drawback, especially in critical computing environments.