I'd advise against it.
A 250/256 SSD will very quickly run out of room with the OS and either FSX or X-Plane.
My system, which can no longer be called a "fast" system, has the following;*
A 256 Samsung SSD for the OS, and any programs that give you absolutely no choice as to where to install it.*
A 1TB fast spinner (a normal HD) with a large cache.*
A second 256 SSD just for my flight sim.
The first SSD was highly rated at the time.
My old HD was a 500GB Western Digital Black very fast at the time that I originally bought it.
I cloned the Western Digital drive onto the Samsung, and kept FSX on the SSD.
I tried to install other programs to the HD.
I download a lot of scenery and the SSD started to fill up.
Another flight sim solution was needed.
I then bought a used (less than $100 at the time) Transcend
256GB SSD to add to the mix. You have to be very picky who you buy used equipment from. Because of the easy return policy, I bought it directly from Amazon, NOT A SELLER ON AMAZON!
Now I have a system with a SSD for the OS. A standard SSD for most programs. And a 256GB that is only used for my flight sim.
Evan on a relatively old system, this works out VERY, VERY well
. On a fast system you'll think that you're in heaven.BTW -
SSD's are so fast that I can't tell difference between the highly rated SSD and the cheap SSD.