According to the spec sheets, the maximum memory you can install into an Optiplex 390 is 8 GB. Can anyone tell me why that is? I thought the chipset in this computer would support 2 x 8 GB dimms? Is that just old information, or is there really a 2 x 4GB maximum? Why would that be?
Updating this thread to confirm that the Optiplex 390 does indeed support 16GB (2 x 8GB DIMMS) of memory.
The memory in question is G.Skill DDR3-1600 PC3-12800 8192MB x2 (F3-1600C11D-16GNT) set.
Hi I would like to update this thread for the sake of helping others. I recently installed 16gb (2x8gb sticks) of RAM in my Dell Optiplex 390 Desktop and it seems to accepting the full 16gb. I checked both the BIOS and Windows specifications page and it says that the full 16gb is in use.
The RAM modules I purchased where
Crucial Balistix Tactical LP 16gb (2x8gb) - Ballistix Tactical BLT2C8G3D1608ET3LX0CEU 16GB kit (8GB x 2) DDR3 PC3-12800 Unbuffered NON-ECC 1.35V.
The memory speed has been slowed down to 1333mhz by the motherboard I think and I have no way of changing the XMP profile to run it at 1600mhz due to the limitations of the board. I can confirm however that in 1333mhz mode my computer is running really fast and I can't complain whatsoever really. My computer has the Core i5 2400 processor in it and the stock 250gb HDD just to clarify.
Both Crucial and the spec sheet for the Opti 390 say 8GB (2x4GB). Of course, you're welcome to try 2x8GB and let us know if it works.
Please post back and let me know if you need more help.
Hi could you tell me if that RAM upgrade to 16gb is available in any 2x8gb RAM chip formations of the same spec i.e. DDR3-1600 PC3-12800. Meaning like from some other manufacturers like Crucial or Kingston etc?
Another user says that this works HOWEVER I do not know this.
G.SKILL Value 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-1600C11D-16GNT
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