An SSD is for data storage. It's a place to store data and for the operating system files and the files for applications to reside permanently so they can be accessed by the CPU to run. RAM stores currently needed information. Nothing regarding how the CPU, RAM and HDD has changed just because of SSDs. SSDs just make accessing the information faster because it's not stored on a spinning disc like a HDD. An SSD is like a whole bunch of RAM, but slower than RAM as it uses different memory chips than RAM, that just makes it much faster for the system to access that information when reading or writing to the drive.
As far as the UEFI, you still need the correct boot partition but if you wipe the drive and install windows, I think 7 will create the correct master boot record for UEFI or AHCI systems, but I know for certain that 8 does. It should recreate it during the install if you choose the custom option, delete all partitions using the windows installation disk and then format and install. IF you're just using it for storage, just format it as you normally would but if it's to be the boot drive here's how it's done:
Pretty much the same for all versions.
http://www.eightforums.com/tutorials/2299-clean-install...