SSD ($50+) uses flash memory to save data instead of magnetic spinning platters that HDDs use. Using an SSD can boost the speed of any computer.
Ranked in these QuestionsQuestion Ranking
Pro Way fast
SSD retrieves information at nearly the speed of light.
Con Limited number of read/write cycles
SSDs have a limited number of read/write cycles, but they still manage to last a reasonably long time so it shouldn't be a huge concern.