User validated 2x16 Gb in optiplex 7060 are Crucial CT16G4DFD8266.C16FE 2x16GB Crucial CT16G4DFD824A.C16FDD 2x16GB both are plain crucial ram ddr4-2400, ddr4-2666. Re: the Ballistix ram is DDR4 and exceeds the 7060's mb speed (2666Mhz) Dell bios is finicky. Only certain ram can post. A ddr4 ram exceeding spec is not promise that it would post in 7060.  
Happy New Year. Ballistix RAM is about 33% of the 'official' RAM on Crucial's website - looking at the 2x16GB deal going on. Crucial says the Ballistix is incompatible with the 7060, which doesn't make much sense to me since the Ballistix ram is DDR4 and exceeds the 7060's mb speed (2666Mhz). Am I missing something, or is Crucial trying to up sell me?
Crucial Ballistix RAM - Optiplex 7060 SFF