Ответ на "Is it possible to change the HDD for an SSD?"Yes, it's possible! I just exchanged my HDD for a SSD (240Gb - PNY) and upgraded my imac dec2012 to 16G RAM! Just got very... veryyyy faster than before! First, install mavericks on the drive on a external bay. After that, i'll be set to exchange the devices! I bought a kit from OWC to open and close the imac! Filipe.