Answer to: Are 256GB/512GB/1TB SSDs all XP941 based?Great questions about the SSD. The SSD is definitely a Samsung SSD and it is definitely PCIe, guaranteeing performance as we see in todays 2013 XP941 contained MBA's as we reviewed. As it is a 1TB SSD (single as per model denotation of SM1024), they will have to use 128GB modules which means it just may be their new TLC in order to ensure value of the SSD. The ONLY way anyone will ever know is to tear open a new iMac and get the numbers off the memory chips because the controller is the same. 512GB is definitely the XP941 as we reviewed.