オリジナル投稿者： Dan ,
I would stick with upgrading the RAM and buy the better system (4.2 GHz i7) and get the largest SSD model you can afford (no HD). Apple makes getting to the CPU & PCIe blade SSD quite difficult, as its on the back side of the logic board. Also keep in mind you'll void your warranty swapping out the CPU or adding your own Blade SSD. Then in a year look at adding an internal drive when the dust has settled. For now use an external HD if you need more storage. Storage solutions are ripe for change between Intel's Optane (3D XPoint), 3D NAND & Heat-assisted magnetic recording (HAMR).