Dell PowerEdge R720 Server Memory Spec Overview & Upgrade Tips | How to Configure the System

Dell PowerEdge R720 servers are part of the 12th Generation. This 2U server supports 2 x Intel E5-2600 V1 or V2 series CPUs (LGA2011 socket). The R720 server is the next gen to the popular Dell PowerEdge R710 server. There are 24 memory slots operating with DDR3 memory architecture. There are two types of RAM supported by the R720: ECC Registered (RDIMM) and Load Reduced (LRDIMM). The big difference is the maximum configuration. With ECC Reg, the max amount of memory is 512GB via (16 x 32GB) DDR3 PC3-12800R 1600MHz Server Memory. However, LRDIMMs will provide triple the capacity with a max of 1.5TB via (24 x 64GB) DDR3 PC3-12800L 1600MHz Server Memory. This brings up a lot of questions. Why can you only use 16 x 32GB ECC Reg? Why can’t we put in 24 DIMMs? It is called the Rank Rule and we will explain the answer in depth in the video. People also wonder – Does 64GB DDR3 ECC Registered memory exist? Unfortunately it does not and was never invented for DDR3 ECC Reg. Only LRDIMMs support 64GB DIMMs.

There are 2 CPUs. Each CPU operates 3 Memory Channels. And each memory channel has three DIMM slots per memory channel. Note: This is the key reason the Rank Rule becomes an issue for ECC Registered 32GBs, because all 32GB DDR3 DIMMs are Quad Rank. The memory channel are labeled and color coded. You can locate the start of the channel with the white DIMM slot. Black is the second DIMM in the channel followed by green. The proper configuration for 2 CPUs would be duplicates of 8 evenly spread across each channel (only using the white slots). We will discuss this in more depth in our video and also demonstrate how to actually load the DIMMs inside your Dell PowerEdge R720 server.

Learn more about memory options for this enterprise-level server, Dell's PowerEdge R720. The incredible platform is designed to run a wide range of virtualization applications and environments. This server can be quite beneficial for huge enterprises and average size businesses. The general-purpose platform comes with highly expandable memory and huge storage ability.

In this video, we talk about the memory specs in detail and also unveil useful tips for optimum performance from your Dell PowerEdge R720.

Do you want to buy a refurbished Dell PowerEdge R720? You can custom configure your own server. We have both 8 Bay LFF and 16 Bay SFF options in stock.
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