The ThinkPad X1 Carbon has an SSD storage medium which is better than the HDD storage medium found on most medium processor core laptops that were released around the same time as it. Solid State Drives (SSD) store data in semiconductors on a circuit board rather than using magnetic or optical media. Solid State Drives have no moving parts which makes them very fast and reliable.
An SSD storage medium is actually the best storage medium across all medium processor core laptops that are a similar age to the ThinkPad X1 Carbon.
The worst storage medium across similar types of portable PC is HDD.
We compared all the other portable PCs that have an SSD storage media to this laptop and we think cheaper portable PCs such as the T450, and the T550 both from Lenovo or the DELL Latitude 14 E7450 is also worth considering.
If you are looking for a notebook PC with a better storage medium then you might want to consider the Toshiba Tecra Z50 (SSD).