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April 6th, 2024 19:29

Dell precision 5820 Ram upgrade

Hi I am trying to upgrade ram on my dell precision 5820 tower. I got the crucial ram Product Name::64GB DDR4-3200 RDIMM 1.2V CL22. I followed the recommendation for the slot choice but the PC would not turn on and would do two orange lights and then five white lights, which means Invalid memory installed. 

And now when I use the old 8GB stick, the LED indicator turns white and sounds like it is booting but it does not boot up.

The Previous RAM was SkHynix 16GB (2x8GB) DDR4 2666MHz RDIMM ECC of which one is no longer working so have 8GB now.

The CPU is Intel Xeon W-2123 (3.6GHz, 3.9GHz Turbo, 4C, 8.25MB Cache, HT, (120W) ) DDR4-2666)

Am I missing soemthing here? Need help.

10 Elder

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24K Posts

April 6th, 2024 21:58

Did you use  Crucial's memory configuration tool for that system?  None of the recommended memory for it is DDR4 2666 -- it's all DDR4-3200:

https://www.crucial.com/compatible-upgrade-for/dell/precision-5820-(intel-xeon-w-21xxx-models)#memory

7 Technologist

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10.9K Posts

April 6th, 2024 22:19

Dell oem memory for PWS 5820

Memory RAM module (DIMM), 8GB, 2666, 1RX8, 8G, DDR4, NU

8GB (1x8GB) DDR4 non-ECC Memory
Memory RAM module (DIMM), 8GB, 2666, 1RX8, 8G, DDR4, R

64GB 8x8GB DDR4 2666MHz RDIMM ECC Memory
Memory RAM module (DIMM), 8GB, 2933, 1RX8, 8G, DDR4, R

8GB RDIMM, 2933MT/s, Single Rank -DSS RESTRICTED
Memory RAM module (DIMM), 8GB, 3200, 1RX8, 8G, DDR4, NU

16GB (2x8GB) DDR4 non-ECC Memory
Memory RAM module (DIMM), 8GB, 3200, 1RX8, 8G, DDR4, R

8GB RDIMM, 3200MT/s, Single Rank
Memory RAM module (DIMM), 16GB, 2666, 2RX8, 8G, DDR4, NU

16GB (1x16GB) DDR4 non-ECC Memory
Memory RAM module (DIMM), 16GB, 2666, 2RX8, 8G, DDR4, R

16GB RDIMM, 2666MT/s, Dual Rank
Memory RAM module (DIMM), 16GB, 2666, 2RX8, 8G, DDR4, R

16GB RDIMM, 2666MT/s, Dual Rank
Memory RAM module (DIMM), 16GB, 2933, 2RX8, 8G, DDR4, R

16GB RDIMM, 2933MT/s, Dual Rank
Memory RAM module (DIMM), 16GB, 3200, 2RX8, 8G, DDR4, NU

64GB, 4x16GB, DDR4 UDIMMnon-E CCmemory
Memory RAM module (DIMM), 16GB, 3200, 2RX8, 8G, DDR4, R

16GB RDIMM, 3200MT/s, Dual Rank
Memory RAM module (DIMM), 32GB, 2666, 2R, 16G, DDR4, NU

64GB, 2x32GB, DDR4 UDIMMnon-E CCmemory
Memory RAM module (DIMM), 32GB, 2666, 2RX4, 8G, DDR4, R

32GB RDIMM 2666MT/s Dual Rank
Memory RAM module (DIMM), 32GB, 3200, 2RX4, 8G, DDR4, R

32GB RDIMM, 3200MT/s, Dual Rank 8Gb BASEx4
Memory RAM module (DIMM), 64GB, 2933, 2RX4, 16G, DDR4, R

64GB RDIMM, 2933MT/s, Dual Rank
Memory RAM module (DIMM), 64GB, 3200, 2RX4, 16G, DDR4, R

64GB RDIMM, 3200MT/s, 双列, 16Gb

7 Technologist

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10.9K Posts

April 6th, 2024 22:25

Apparently it has two different motherboard 

you have Xeon cpu (C422 chipset) so you need to use the Registered ram

other users who have the X299 chipset and intel core X cpu should use the non-ECC ram.

a bit confusing why Dell offers two options in one model.

(edited)

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