1 Can SSDs be wiped and used in multiple machines ? Absolutely . Did you think that SSDs are single use or what ? 2 Is using two SSDs and an external HDD viable in a PC ? There is no issue whatsoever in having more than one SSD in a PC . Other than cost any downsides to that are inconsequential slightly more hassle to manage space on multiple drives and extra few watts of power used . On the other hand I ' d actually be slightly wary of external HDD they generally are fine for some backups or media storage , but in my experience they fail quite often even if you take good care of them . Also they are susceptible to being droppedfall from places which carries huge risk of them breaking . Just keep in mind that for their ease of connecting to different PCs you have to pay with reduced reliability don ' t store on them the only copy of anything that has value . I was reading up and heard some stuff about running RAID ? Generally it is not worth it . Setting it up properly so that it doesn ' t put your data at increased risk is not trivial and tends to be expensive . You ' d also want identical disks for RAID anyway . Lastly software solutions to pooling multiple drives tend to be superior . 3 Bad buy ? Or just more space for memes ? MX 300 is excellent budget drive . In daily usage it is just as good as any SSD outside of artificial benchmarks you won ' t be able to perceive the difference . IMHO buying any of the more expensive drives doesn ' t make any sense outside of professional applications and deep pocketed prosumers .