Collection: Dell PowerEdge R840 Memory Upgrades

Dell PowerEdge R840 Memory Configuration

The Dell PowerEdge R840 is a Quad Processor system with 12 DIMM slots on each CPU. There are six memory channels per CPU, each managing two DIMM slots. Along with the standard ECC Registered (RDIMM) memory, the Dell PowerEdge R840 supports options for Load Reduced (LRDIMM) memory. Different speeds can be mixed but the modules will function at the slowest speed installed.

Cloud Ninjas' Dell PowerEdge R840 Memory Upgrade Tips

• The total number of DIMMs for the Dell PowerEdge R840 is 48 slots.
• The Dell PowerEdge R840 supports 4GB, 8GB, 16GB, 32GB, 64GB or 128GB DDR4 DIMMs.
• The Maximum amount of RAM the Dell PowerEdge R840 server can hold is 3TB of Registered DIMM (RDIMM) memory of 48x64GB at 2933MT/s with 2nd generation Intel Xeon Scalable processors.
• The Dell R840 also supports load-reduced DIMMs (LRDIMM) up to 6TB, 48x128GB at 2933MT/s with Intel Xeon Scalable CPUs and at 2666MT/s with Intel Xeon Scalable 2nd generation.
• When purchasing new memory it is best to purchase identical memory modules to what your system already has. Your current server configuration will determine the supported DIMM type and speed.
  
• RDIMMs and LRDIMMs must not be mixed.
• Think Long Term! Purchase the maximum amount that your Dell PowerEdge R840 can hold and avoid wasting time and money on modules you won't be able to use if you upgrade again.
• Buy “Dell PowerEdge R840” memory today from Cloud Ninjas!

Cloud Ninjas' Dell PowerEdge R840 Questions & Answers

1. What sizes can you use for the Dell PowerEdge R840 Server?
   The Dell PowerEdge R840 Server can be upgraded using 4, 8, 16, 32, 64 and 128 GB DIMMs. Get your kit at https://cloudninjas.com/.
   
   
2. What speeds are supported by the Dell PowerEdge R840 Server?
   The Dell PowerEdge R840 Server can support memory modules at speeds of 2133, 2400, 2666, and 2933MT/s.
   
   
3. What types of RAM are accepted by the Dell PowerEdge R840 Server?
   The Dell PowerEdge R840 Server supports RDIMMs and LRDIMMs.
   
   
4. What is ECC Registered Memory?
   The Dell PowerEdge R840 Server supports registered memory with ECC. ECC memory detects and corrects memory errors within the server environment. Registered (also called buffered) memory modules register between DRAM modules and the system's memory controller. ECC Registered Memory transfers less electrical load to your memory controller which makes it more stable and reliable.
   
   
5. What is Unbuffered Memory?
   The Dell PowerEdge R840 Server does not support unbuffered memory with ECC. Unbuffered memory is memory that has no register between your DRAM and your system’s memory controller.
   
   
6. What is Load Reduced Memory?
   The Dell PowerEdge R840 Server does support load reduced DIMMs (LRDIMM). Load reduced DIMMs are designed with a buffer chip (or chips) to replace the register to help minimize loading, the LRDIMM increases server system memory capacity and speed. Hyper-cloud DIMM (HCDIMM or HDIMM) is considered load reduced memory which is 240-pin, 72 bit wide. LRDIMMs differs from low capacity, low voltage registered memory modules (LV RDIMM).
   
   
7. Can I mix ECC Reg with ECC unbuffered or Non-ECC memory?
   The Dell PowerEdge R840 Server does not support the use of both unregistered and registered memory with ECC or the use of non-ECC memory. It is recommended to use identical memory configuration in all channels.
   
   
8. What is max configuration?
   The Dell PowerEdge R840 Server supports the standard maximum configuration of 3TB using forty-eight 64GB RDIMM and can be upgraded to 6 TB using forty-eight 128GB LRDIMM. Get your kit at https://cloudninjas.com/.
   
   
9. How many memory channels per CPU?
   The Dell PowerEdge R840 Server has six channels which house 12 DIMM slots, per processor with a total of 48 DIMM slots in a quad processor configuration.
   
   
10. How do I identify the start of the memory channel?
    The Dell PowerEdge R840 Server, requires memory to be installed into the first white channel marked A1 for Processor 1 and then Processor 2, 3 and 4.
    
    
11. Where can I order memory for my server?
    Order your memory at https://cloudninjas.com/ by finding and selecting the memory package that is right for you.
    
    
12. How soon will my RAM arrive?
    Orders placed before 8 am are set for same day processing and shipping. Delivery times vary based on carrier and location.
    
    
13. What is the warranty on memory for the server?
    Cloud Ninjas offers a one-year warranty on fully tested, refurbished memory.
    
    
14. Is this RAM Dell labeled or Dell branded?
No. The memory shipped from Cloud Ninjas is compatible with your Dell system. However, it will not have a Dell sticker. We ship major brands such as Samsung, Hynix and Micron.