Dell DDR4 2666MHz 64GB Server Memory

Buy 2666MHz Dell 64gb DDR4 Server RAM at an Affordable Price in India

Dell 64GB DDR4 2666MHz memory is a quad-rank (4Rx4) load-reduced ECC module, Dell part A9781930 (SNP4JMGMC/64G), rated at 2666 MT/s (PC4-21300) and 1.2V. It is the module that lets a 14th Gen PowerEdge carry 768GB per processor, or 1.5TB across a fully populated dual-socket R740, R740xd or R640.

Zaco Computers supplies this 64GB server RAM in new and refurbished condition for consolidation and capacity projects across India and globally. Share your server model, processor and target capacity, and we confirm the module type, quantity and slot layout before we quote. Each module is covered by Zaco's 90 Days Warranty, which can be extended.

Dell 64GB DDR4-2666 Part Numbers

Dell's 64GB ECC memory at 2666 MT/s is sold under several Dell and manufacturer codes. Match one of these to your label or purchase record.

What a 64GB Module Changes Inside a PowerEdge Server

The value of 64GB DDR4 server RAM is slot efficiency. A dual-socket 14th Gen server has 24 memory slots, 12 per processor across six channels. With 32GB DDR4 server RAM, filling every slot stops at 768GB. With 64GB modules, the same 768GB uses half the slots, and a full population reaches 1.5TB.

That free space matters on consolidation projects. Hosts can start at 768GB of 64GB ECC memory and grow later without pulling the first set of modules.

Where 64GB Server RAM Is Used

Virtualisation hosts. VMware ESXi and Hyper-V clusters usually run out of memory before CPU. Larger DIMMs raise memory per host, so fewer hosts can carry the same set of VMs.

Database servers. SQL Server, Oracle and similar engines keep frequently read data in memory. More 64GB ECC RAM per server lets more of the working set stay off disk.

Analytics and memory-heavy applications. In-memory reporting, large ERP instances and VDI pools all benefit from high capacity per socket.

How much DDR4 server RAM each workload needs depends on your sizing. We help you match the module count to your target, not guess the target for you.

LRDIMM or RDIMM: Check This Before Ordering 64GB ECC RAM

Dell's 64GB ECC RAM at 2666 MT/s is an LRDIMM. Most Dell 16GB and 32GB DDR4-2666 modules are RDIMMs. Dell does not support mixing RDIMMs and LRDIMMs in one server, so the type already installed decides your path.

An RDIMM buffers the address, control and clock lines. An LRDIMM also buffers the data lines, which lowers the electrical load each module places on the memory channel. That is how a 64GB module reaches its capacity with four ranks.

Why not a 64GB RDIMM on a 1st Gen processor?
A 64GB dual-rank RDIMM needs 16Gb DRAM chips, and 1st Gen Xeon Scalable processors do not support modules built on 16Gb DRAM.

How Much Memory Each Processor Can Address

A full set of 64GB ECC RAM modules sits exactly at the memory limit of standard 1st Gen Xeon Scalable processors.

This is one reason 64GB is the common top capacity on R640, R740 and R740xd builds. Going past 768GB per socket on a 1st Gen server needs both 128GB modules and an M-series processor.

Dell PowerEdge Servers Listed for A9781930

This 64GB LRDIMM is listed for the following systems. Fit still depends on processor and current memory, so we confirm against your Service Tag.

• ● 14th Gen rack: R640, R740, R740xd, R840, R440, R540, R940, R940xa
• ● 14th Gen tower: T640, T440
• ● 14th Gen modular and dense: M640, FC640, MX740c, MX840c, C6420, C4140
• ● AMD EPYC PowerEdge: R6415, R7415, R7425
• ● 13th Gen (runs at up to 2400 MT/s): R630, R730, R730xd, T630, M630, R830, R930