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OFFTEK 16GB Replacement Memory RAM Upgrade for Dell OptiPlex 7040 (Micro) (DDR4-19200) Desktop Memory at Amazon.com
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CMS 16GB (2X8GB) DDR4 19200 2400MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Dell® OptiPlex 3050 All-in-One, OptiPlex 7040 Micro, OptiPlex 7440 - C109 at Amazon.com
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OFFTEK 16GB Replacement Memory RAM Upgrade for Dell OptiPlex 7040 (Mini Tower) (DDR4-19200 - Non-ECC) Desktop Memory at Amazon.com
![CMS 16GB (1X16GB) DDR4 19200 2400MHZ NON ECC DIMM Memory Ram Upgrade Compatible with Dell® Optiplex 7040 Mini Tower, 7040 SFF - C113 - Walmart.com CMS 16GB (1X16GB) DDR4 19200 2400MHZ NON ECC DIMM Memory Ram Upgrade Compatible with Dell® Optiplex 7040 Mini Tower, 7040 SFF - C113 - Walmart.com](https://i5.walmartimages.com/asr/ce32ba2f-d7e1-4b3e-96c8-91f65747c9ce_1.f29a7aee43b93991f8bd484fc28f47d2.jpeg)
CMS 16GB (1X16GB) DDR4 19200 2400MHZ NON ECC DIMM Memory Ram Upgrade Compatible with Dell® Optiplex 7040 Mini Tower, 7040 SFF - C113 - Walmart.com
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CMS 32GB (2X16GB) DDR4 19200 2400MHZ NON ECC DIMM Memory Ram Upgrade Compatible with Dell® OptiPlex 7040 SFF, OptiPlex 7050 SFF/Tower - C114 System Specific Memory - Newegg.com
![Here's my Dell Optiplex 7040, started life as an i5 6400 Inspiron 3650. Slowly upgraded piece by piece to what it is today. It's sporting an i7 6700, GTX 1650 Super, 32 Here's my Dell Optiplex 7040, started life as an i5 6400 Inspiron 3650. Slowly upgraded piece by piece to what it is today. It's sporting an i7 6700, GTX 1650 Super, 32](https://i.redd.it/tlqkm5kceyv51.jpg)
Here's my Dell Optiplex 7040, started life as an i5 6400 Inspiron 3650. Slowly upgraded piece by piece to what it is today. It's sporting an i7 6700, GTX 1650 Super, 32
![CMS 64GB (4X16GB) DDR4 19200 2400MHZ Non ECC DIMM Memory Ram Upgrade Compatible with Dell® OptiPlex 7040 SFF, OptiPlex 7050 SFF/Tower - C120 at Amazon.com CMS 64GB (4X16GB) DDR4 19200 2400MHZ Non ECC DIMM Memory Ram Upgrade Compatible with Dell® OptiPlex 7040 SFF, OptiPlex 7050 SFF/Tower - C120 at Amazon.com](https://m.media-amazon.com/images/I/71dIbEA8JDL.jpg)