About $25-$30. One spins faster then the other and will retrieve info faster. If it is for a back up go with the cheaper one. The other factor is how much will it be running? If you leave it on all the time a faster drive will likely fail sooner.
The "rpm" stands for revolutions-per-minute and it gives some idea as to how fast information can be read and copied to the drive. The higher the rpm, the faster it reads and writes and 5400rpm is almost exclusively used for long term storage these days.
Usually 5400rpm drives are more durable and reliable, but not always. It all depends on how much you want to spend and they also have different warranties. Seagate has a decent reputation, but right now Western Digital and Samsung have better reputations.
LMAO. Really you do not know?
Yup. Sure do. Don't you study, and read?
You have a tough life in front of you.
You graduated 4 years ago and your profile says your are 18-21 year old T (whatever that is). Are you really a little kid?
1800 rpm. I recommend a Solid State Drive. Zero moving parts, making it more friendly to transport.
i personally am hard on electronics. A hard drive with moving parts will seize. A solid state has no moving parts...