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Go to Solution390, maximum memory?
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?
Thanks.
https://www.newegg.com/g-skill-16gb-240-pin-ddr3-sdram/p/N82E16820231637
One user says with bios A14
G.SKILL Value 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-1600C11D-16GNT
i have seen 32 on a 790 but not 390
Because the 390 has only 2 slots I'm saying that specific 8 meg modules work.
https://www.jedec.org/news/pressreleases/jedec-lowers-power-ddr3-releases-spd-spec
That means 16 is max due to having only 2 slots.
Newer JEDEC 1.35v ram is recommended when going higher than 8. The newer ram will work in 1.35v or 1.5v applications but the older 1.5v ram only works at lower density. quad rank ram is never supported. High density ram is never supported. ECC ram is never supported.
Mixing voltages and ranks and speeds is not recommended.
https://www.gskill.com/product/165/186/1532584719/F3-1600C11D-16GNT
https://www.gskill.com/product/165/186/1532584719/F3-1600C11D-16GNT
https://www.newegg.com/g-skill-8gb-240-pin-ddr3-sdram/p/N82E16820231636
- DDR3 1600 (PC3 12800)
- Timing 11-11-11-28
- CAS Latency 11
enyawrenrag
2 Posts
65055
0
Posted May 30th, 2015 09:00
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?
enyawrenrag
2 Posts
65003
0
Posted June 11th, 2015 14:00
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 http://www.amazon.co.uk/gp/product/B00A14ZTRO?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
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.
speedstep
11 Legend
•
46969 Posts
66107
1
Posted June 4th, 2015 07:00
Crucial Says
http://www.crucial.com/usa/en/compatible-upgrade-for/Dell/optiplex-390-desktop
CT5292057
Another user says that this works HOWEVER I do not know this.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231637
G.SKILL Value 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-1600C11D-16GNT