Yes technically doable, but it would run in single channel mode.  Ideally you want to run in dual channel mode to maximize memory bandwidth. But if you are not gaming you might not notice the difference in performance.  Price wise getting single 8gb is about the same as 2x4gb (matched ram sticks for dual channel).  7060 memory spec: 4 DIMM slots (2 SODIMM slots for Micro); Non-ECC dual-channel 2666Hz DDR4 SDRAM (Memory performance on Intel® Core i3 processor will be at 2400MHz ). Max memory is 64GB (Tower/SFF) and 32GB (Micro)4GB (1x4GB) 2666MHz DDR4 Memory8GB (2x4GB) 2666MHz DDR4 Memory8GB (1x8GB) 2666MHz DDR4 Memory16GB (2x8GB) 2666MHz DDR4 Memory16GB (1x16GB) 2666MHz DDR4 Memory32GB (4x8GB) 2666MHz DDR4 Memory (Tower/SFF only) 32GB (2x16GB) 2666MHz DDR4 Memory64GB (4x16GB) 2666MHz DDR4 Memory (Tower/SFF only)
I have Dell 7060 with 2x 4GB DDR4 RAM. I would like to upgrade it by another 8GB. Can I just add one 8GB stick, like this one?: [URL]
Memory upgrade in Dell Optiplex 7060 by one stick