Dell Memory Upgrade – 128GB – 2666MHz Intel Opt DC Persistent Memory (Cascade Lake only)
Dell Part AA664973
Random Access Memory (RAM) is a type of hardware that your computer uses to store information. Adding memory is one of the most cost-effective ways to improve your computer’s performance.
Why should I buy a Dell Upgrades over a third-party part?
Tested and Verified Tier-1 OEM-Grade Parts
Ensure compatibility with Dell servers, storage and networking.
Ease of Installation
Save time with Dell Upgrades that are shipped as kits with the necessary hardware and firmware.
Secure Supply Chain Focus
Protect system data and integrity with parts sourced from a secure supply chain.
Dell Tech Support and Warranties
Preserve Dell technical support and warranties—which do not support systems with third-party upgrades.
Compatibility
This product is compatible with the following systems:
- PowerEdge MX740c
- PowerEdge MX840c
- PowerEdge R640
- PowerEdge R740
- PowerEdge R740XD
- PowerEdge R840
- PowerEdge R940
- PowerEdge R940xa
Memory DIMM Types
With more memory, the faster that data and instructions can be read, written, and performed by the server.
There are three types of memory DIMMS for servers available. These DIMM types cannot be mixed in a single system, you must select the type of DIMM appropriate for your workload at the type of purchase.
- Unbuffered DIMM: UDIMM, an unbuffered, low density, low-latency DIMM that doesn’t include a register or buffer chip. UDIMMs are generally used in applications requiring the lowest possible latency.
- Registered DIMM: RDIMM, a registered DIMM that provides high signal integrity — performing parity checking to detect improper addresses or commands — and increased performance for heavy workloads.
- Load reduced DIMMs: LRDIMM, uses a buffer to reduce memory loading to a single load on all DDR signals, allowing for greater density.
Memory Tests
- Burn-in: Powered stress testing (i.e. increased temperature) to remove weak components.
- Component Test: Memory vendor-specific diagnostic tests performed at DRAM component level to ensure functionality.
- Module Test: Memory vendor-specific diagnostic tests performed at DIMM level to ensure functionality (with all DRAM components already mounted on DIMM PCB).
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