I'm mainly talking about the speed here. I have a 120GB SSD installed in my laptop and I'm loving it. However, 120GB is really size prohibitive. My other slot is filled with a 1TB HDD so it's not an option to get an extra SSD in that slot and paying for a larger SSD just to replace my current one is not worth it.
So I'm considering some other interesting alternatives. I could get an external SSD, but honestly it seems like a decently sized one costs so much more than a simple flash drive of same capacity. Now, I don't really know the difference in their construction, but a flash drive also has no moving parts. Is it slower than a SSD? Why would anyone want an external SSD otherwise?
In any case, I'm wondering if I would have any performance benefits from buying a USB3.0 flash drive and using it as an extra disk over just using my HDD. If not, would an external USB3.0 SSD make a difference?