Check the rpm speed --- the faster it spins --- the faster you can call up things on it . If it"s 7200 rpm -- that"s good.
Some "Gamers" will use hard drives rated at 10,000 rpm --- but these cost a lot more ,and not what you need for your use.
Using the USB port will be a little slower anyway --depending on your transfer speed (bus bar).
Another way to do this would be to buy another regular hard drive and install it inside your computer .
You have to remove the side cover-- and there should be a slot for it to slide in--- next to the other H.D.
The 40 wire pin cable running to the primary H.D. may have another connection hookup for another H.D. If not ---it"s very easy to take the old cable out and install one with the double hookup.
Then you need to install the power wire hookup --- the same power wire feeding the primary H.D. should also have a double connector for this purpose.
On the back --end of the H.D. ,next to the 40 wire cable hookup , and the power hookup ---you will see a roll of pins ---
these are the jumper pins that you jump across using a little jumper. Look on the H.D. for a picture for the settings. You will set the jumper pin to Slave on this second H.D.
At this time ---- you will have to check the jumper settings also on your primary H.D. ---- most likely you will need to change the jumper pin setting to : Master/with Slave present.
I have 2 computer systems and both are setup in this way---- I download to the Master, or I can direct the downloads to go to the slave drive.This keeps the Master H.D. uncluttered , and in fine shape with proper housekeeping.
Also ---if you fill up the Slave --- it"s not a complicated job really--- to change it out with a fresh one.
My H.D."s are setup outside the computer case -- in a neat little invention of mine. It"s sorta like a external H.D., but with this I can very quickly(less than a min.)change out any one of the two H.D. I can change out the Master H.D. with another one that has been "programmed, and mated" to this computer and can be back up and running again in just mins.--- same with my other computer. I can even swap the Slaves back and forth between computers---- or use my lan setup to transfer info between the computers, but this part gets deeper in the initial work to set it up with the router,ip , etc.
Ok-----enough of this , ----but it does open your thoughts up to another way ---even if you use it or not.
Have a nice day there in the UK.
+++Spock+++