Personally I don't see that the advantage of an SSD over a hard disk running over USB would be great enough to make that much of a difference.
Installing large programs like games for one. It's hit and miss on Windows, but when it works it's storage salvation. On my wife's iMac I once setup OS X on an external drive, and it ran faster than their hybrid solution (not really applicable, but neat enough to mention)
I had a Samsung 840 EVO 1TB mSATA that I put in a small enclosure that, while being only the size of a pack of bubble gum and very small, got incredibly hot with anything more than a couple of minutes of file I/O and constantly overheated.
Sounds like a badly designed case.
Unless you are doing numerous continuous random reads, I don't think you are going to see a speed improvement. In fact the write speed of an SSD may be slower. Maybe someone better informed can chime in on that.
SSD reads are fast. SSD writes are fast to a point. Anything that's TLC flash is good until you overtake the cache, at which point write speeds tank.
The plan is to use the SSD as storage for my photographs.
You can do this, and if you REALLY have to get an external SSD you can get a 480 gig 2.5" on
Amazon for like $120 and then buy an external case for $25ish.
Under any other circumstance I'd say don't waste the money. The benefit of SSD is in the speed of it's reads, and your average image file just isn't THAT relatively large [compared to, say, loading an O/S or a program] Bang for buck, you're MUCH better off spending $60-$120 on a 1-4TB hard drive.
The only problem is that the SB USB ports are [were?] SEVERELY underpowered. I don't waste my time with external HDDs on it anymore because it didn't like the one I had [frequent disconnects while writing, corrupt files that ended up causing me to have to reformat]. It could be just my unit. It could have been an issue resolved with a software/firmware update, I honestly don't know.