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The best memory upgrades for your Dell Optiplex 390 Desktop!

We've spent years amassing all the information we need to make sure you get the right memory for your Dell Optiplex 390 Desktop. We guarantee this memory will work in your machine for the life of your machine. Your Dell Optiplex 390 supports up to 8192 MB in two slots and modules must be installed one at a time.

We recommend installing a matched pair of modules for best performance. 

  Code OEM DescriptionCapacityKit OfPriceinc VAT 
expand   DIMM
4GB 240-pin DDR3 PC3-10600 DIMM 1333MHz Non-ECC A3414608 3396014 A3414608 4GB 240-pin DDR3 PC3-10600 DIMM 1333MHz Non-ECC 4GB1 £39.29 £47.15 Buy
2GB 240-pin DDR3 PC3-10600 DIMM 1333MHz Non-ECC A3414621 3396015 A3414621 2GB 240-pin DDR3 PC3-10600 DIMM 1333MHz Non-ECC 2GB1 £21.01 £25.21 Buy
1GB 240-pin DDR3 PC3-10600 DIMM 1333MHz Non-ECC A3544254 3396016 A3544254 1GB 240-pin DDR3 PC3-10600 DIMM 1333MHz Non-ECC 1GB1 £11.26 £13.51 Buy

More information about this machine

Detailed machine info

We recommend installing a matched pair of modules for best performance.

Is base memory removeable?y
Number of memory slots2
Number of memory banks2
Number of modules per bank1
Maximum installable memory8192

Original Memory Configuration

more about your Dell Optiplex 390 machine
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