I wonder if it's worth putting games on external ssd. The new internal hdd on the one x is meant to be faster but I'm still tempted, no doubt digital foundry will have there comparison's out not long after release
I use a SSHD hybrid drive on my Xbox 2TB 3.5" on a USB3 enclosure, the reason i went for a 3.5" over a 2.5" is that it spins faster 7200rpm over 5400rpm, yes it needs external power but i never move it anyway.
It makes a significant difference joining most games and games with a lot of reloading are much more enjoyable, (just Cause 3 challenges were what amde me splash the cash cause they were soooo annoying to watch reload every time you missed a ring).
Would I have liked a SSD? yes but looking at the benchmarks the speed difference was marginal and as I play more than 1 or 2 games at once I would have needed at least a 1tb SSD.
The impact?
On destiny 2 I typically arrive on planet 5-6 seconds before the rest of my fire team, now some of that is network related.
Forza 7 based on chats over xbox live while join races im loading in much quicker, (though if im on PC its even faster on a SSD obviously) maybe 20 seconds plus.
The Division i would be in ages before them, BF1 loads in faster but then you have to sit and wait for everyone else before the match starts.
Stuff loading in tectures on the fly, open world games seems less poppy if you know what i mean, but thats subjective.
I would recommend it if you can get away with 500gb maybe go for a SSD if not them SSHD is the way to go.
With the new Bulk transfer stuff in the UI it is easier to transfer stuff off and on, I was considering a SSD and offline 5tb HD for backup but decided that wasn't practical as I would end up copying a game back on and then having a huge update to install.