Yep and Fox_Exe posted a link to that discussion a few hours ago with the processors for the My Cloud Home.
G-Sheet table for better understand and more details
WD MyCloud (Gen1) ----- Mindspeed Comcerto C2200 (2x650MHz)
WD MyCloud (Gen2) ----- Marvell Armada 375 (2x1GHz)
WD MyCloud (?? / Japan) ----- Marvell Armada 375 (2x1GHz)
WD MyCloud EX1100 ----- Marvell Armada 375 (2x1GHz)
WD MyCloud Mirror (Gen1) ----- Marvell Armada 370
WD MyCloud Mirror (Gen2) ----- Marvell Armada 385 (2x1.33GHz)
WD MyCloud EX2 ----- Marvell Armada 370
WD MyCloud EX2 Ultra ----- Marvell Armada 385 (2x1.33GHz)
WD MyCloud EX4 ----- Marvell Armada A300 (1x2.0GHz)
WD MyCloud EX2100 ----- Marvell Armada 385 (2x1.33GHz)
WD MyCloud PR2100 ----- Intel Pentium N3710 Quad Core 1.6 GHz
WD MyCloud DL2100 ----- Intel Atom C2350 (2x1.7 GHz)
WD MyCloud DL2200
WD MyCloud DL4100 ----- Intel Atom C2338 (2x1.7 GHz)
WD MyCloud EX4100 ----- Marvell Armada 388 (2x1.6GHz)
WD MyCloud PR4100 ----- Intel Pentium N3710 Quad Core 1.6 GHz
WD MyCloud MX4200
WD MyCloud Home ----- Realtek RTD1295PBCG (4x1.4GHz)
WD MyCloud Home Duo ----- Realtek RTD1296PBCG (4x1.4GHz)
