RDIMM

RDIMM stands for Registered Dual Inline Memory Module and is primarily used for server memory upgrades. RDIMM is not to be confused with ECC UDIMM although both have ECC (error correction.) ECC UDIMM is unbuffered and RDIMM is buffered. When memory is manufactured, it can be a dual in-line memory module, called a DIMM, while a registered memory module is called an RDIMM. Registered memory modules, which can also be called Buffered memory modules, have a register / buffer chip between the DRAM modules and the system's memory controller. Registered / Buffered server memory uses less electrical load on the memory controller which allows single systems to remain stable with more memory modules load. Registered memory is built with additional circuitry required, so it is usually found only in applications where there is need for scalability. 

Usually, the motherboard must match the DIMM type… registered memory will not work in a motherboard not designed for RDIMM, and vice versa. Desktops, Gaming Computers, PC motherboards are usually all unbuffered specifications and will not accept registered memory. Although there is often confusion between registered / buffered memory and ECC unbuffered memory, we can make your upgrade experience very easy. Simply call us and we will guide you through our site or assist with your order by phone. We can even offer quantity discounts on registered memory and terms to qualified organizations.

DDR3 RDIMM, is a 240-pin memory module. Although considered EOL (end of life), DDR3 is still readily used in many applications. DDR3 RDIMM is available in different ranks. Rank is depicted by the type of DRAM a module is built with. Our memory upgrades are sold using standard and most common rank configurations, but any other rank is available. DDR3 modules are available in 1.35V although most are 1.5V. If you are unsure if which voltage is correct for your application, try searching by Memory by Manufacturer for your specific machine / model or simply call us if you need assistance with rank or voltage or any other technical specification.

DDR4 RDIMM is a 288-pin memory module. NEMIX RAM DDR4 upgrades are always readily available and in stock. Although DDR4 Registered memory voltage is always 1.2V, much like DDR3, DDR4 server memory is available in different ranks. We suggest contacting us if you do not know the rank you require, however we offer the most commonly used upgrade kits. 

DDR5 RDIMM is a 288-pin memory module with different pinouts from DDR4. DDR5 memory upgrades are available in the following capacities: 12GB – 24GB – 32GB – 48GB – 64GB – 96GB – 128GB – 256GB – 512GB.

Although rank and voltage are consistent with DDR5 registered memory, there are different speeds available. Please contact us for help with DDR5 memory upgrades.

Not all registered memory is equal! Quality of the chipset and PCB play a big role along with the buffer. Although most tier 1 manufacturers such as Samsung, Micron and Hynix ™ manufacture original modules with highest quality components, not all other manufacturers produce high quality server memory upgrades. NEMIX RAM has been designing and manufacturing server memory for 30 years. We are a niche private manufacturer with quality and price in mind at all times, not to mention Lifetime Warranty on all server memory upgrades. NEMIX RAM RDIMM is manufactured using only tier 1 chips and highest quality components and PCB. We specially design our modules for specific systems, guaranteeing performance and scalability. Our registered memory upgrades are 100% compatible with any server including Cisco, HP, IBM, Supermicro, Dell, Lenovo, Asus and much more. 

If you purchase your upgrade from us it will be shipped the same day if your order is placed before 3pm EST. We offer the best priced registered memory upgrades guaranteed and can assist you or your computer technician with correct upgrades, even technical support. NEMIX RAM offers registered memory from 8GB to 256GB modules and all available DDR3 DDR4 DDR5 speeds backed by lifetime warranty.