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Go to SolutionEEC or not EEC...
The specification in the manual lists RDIMM and EEC memory as “ideal”, but will this Precision 5820T with Xeon W-2155 CPU running at 2666MHz ACCEPT unbuffered and non-EEC 16GB RAMs? These are relatively cheap and readily available here in Sweden, while the ECC models are not. Originally a server, this PC is a second-hand home computer nowadays, so the Error-Correction Code should no longer be an issue.
Does anyone know what MAKE the 4*16GB RAMs are that came installed from the factory in these machines? I aim at filling up the remaining 4 slots with identical RAMs but I would rather not mix different brands. I cannot access the computer right now to check myself. Can I find and install 4 additional identical RAMs, then I wouldn't have to invest in a complete set of 8 new ones. After all, it's a pretty old machine...
list of Dell oem ram for P5820
some oem are non-ECC
Memory RAM module (DIMM), 8GB, 2666, 1RX8, 8G, DDR4, NU
Dual In-Line Memory Module, 12G, 1X4/1X8, 2666, U, Non-EncryptedMemory RAM module (DIMM), 8GB, 2666, 1RX8, 8G, DDR4, R
32GB 4x8GB DDR4 2666MHz RDIMM ECC MemoryMemory RAM module (DIMM), 8GB, 2933, 1RX8, 8G, DDR4, R
8GB RDIMM, 2933MT/s, Single Rank -DSS RESTRICTEDMemory RAM module (DIMM), 8GB, 3200, 1RX8, 8G, DDR4, NU
8GB (1x8GB) DDR4 non-ECC MemoryMemory RAM module (DIMM), 8GB, 3200, 1RX8, 8G, DDR4, R
8GB RDIMM, 3200MT/s, Single RankMemory RAM module (DIMM), 16GB, 2666, 2RX8, 8G, DDR4, NU
DIMM, 16GB, 1X16G, 2666, UD, NEMemory RAM module (DIMM), 16GB, 2666, 2RX8, 8G, DDR4, R
16GB RDIMM, 2666MT/s, Dual RankMemory RAM module (DIMM), 16GB, 2666, 2RX8, 8G, DDR4, R
Модуль памяти RDIMM 16 Гбайт, 2666 МТ/с, двухранговыйMemory RAM module (DIMM), 16GB, 2933, 2RX8, 8G, DDR4, R
16GB RDIMM, 2933MT/s, Dual RankMemory RAM module (DIMM), 16GB, 3200, 2RX8, 8G, DDR4, NU
16GB 1x16GB DDR4 non-ECC MemoryMemory RAM module (DIMM), 16GB, 3200, 2RX8, 8G, DDR4, R
16GB RDIMM, 3200MT/s, Dual RankMemory RAM module (DIMM), 32GB, 2666, 2R, 16G, DDR4, NU
32GB (1x32GB) DDR4 non-ECC MemoryMemory RAM module (DIMM), 32GB, 2666, 2RX4, 8G, DDR4, R
32GB RDIMM 2666MT/s Dual RankMemory RAM module (DIMM), 32GB, 2933, 2RX4, 8G, DDR4, R
32GB RDIMM, 2933MT/s, Dual RankMemory RAM module (DIMM), 32GB, 3200, 2RX4, 8G, DDR4, R
32GB RDIMM, 3200MT/s, Dual Rank 8Gb BASEx4Memory RAM module (DIMM), 64GB, 2933, 2RX4, 16G, DDR4, R
64GB RDIMM, 2933MT/s, Dual RankMemory RAM module (DIMM), 64GB, 3200, 2RX4, 16G, DDR4, R
64GB RDIMM, 3200MT/s, Dual Rank, 16Gb(edited)
Re: the 4*16GB RAMs are that came installed from the factory in these machines
if you look up original spec using service tag (which you can retrieve remotely if you can connect to PC) will tell you the DP/N of memory installed which in turn points to original memory maker
it is best to buy 4 more identical oem ram (same as original 4) using the memory maker model number which is inexpensive
(edited)
@Chino de Oro Thank you for the input, now I know where to look! The DELL Support site lists all devices installed when this machine came out from the factory, but I wasn't able to identify the brand of the DIMMs, I'll have to look again! Not that I'm very optimistic about finding affordable identical *NEW* DIMMs (there are plenty of "refurbished" ones on sale at eBay...) but at least I know I've tried... Appreciate your response!
@redxps630 The 7:th from above.
Memory RAM module (DIMM), 16GB, 2666, 2RX8, 8G, DDR4, R
16GB RDIMM, 2666MT/s, Dual RankThe next one may do so too, but I can't read Russian. Obviously there are several that would fit but I need to find the one from the same producer and see if it also fit in my wallet...
Chino de Oro
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Posted February 9th, 2025 02:40
I can confirm that VM51C is compatible and support with your 5820. Verify if this vendor can ship product in your region https://www.lambda-tek.com/DELL-VM51C-sh/B42959859?srsltid=AfmBOop6xp_iXPJ_ifBdQtfOX-2_a2_XesrEuv4Tpxf1KoOjF_j0L_-4
Chino de Oro
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Posted February 8th, 2025 07:05
1. Unfortunately, no. Your 5820 does not accept unbuffered and non-EEC 16GB RAM. Only RDIMM.
2. If you are original owner, follow advise from other poster and look up your system configurations on Dell support site for your existing memory. Otherwise, access system BIOS and it will tell you all the memory information. Then, use this memory configurations to purchase additional memory modules to match with your selected of a support configuration for upgrade.