Hello. The Dell Poweredge 840 supports maximum memory capacity of 8 GB and will not support 4 GB memory DIMMs. Consider using 2 GB memory DIMMs instead for maximum memory. You can use any of these part numbers: F6802 & WM553
I have a Dell Poweredge 840 Desktop server that is currently configured with 1GB of memory. The stock part number for that memory is Y5948. I purchased a set of Micron MT36HTF51272PY-667E1 4GB Dual Rank Memory Modules to replace the current memory. However when I swapped the memory out it started beeping and wouldn't start up, and nothing displayed on the screen. I also tried trading out memory modules with the other ones in the set that I purchased as well as trying only 1 module at a time and that ended in the same result. From this I would assume that the memory must be incompatible with my system, but I was wondering if you could point out why it is incompatible?
Dell Poweredge 840 Memory Upgrade