FWIW John C is correct as far as anything that is memory or CPU intensive.
However using a SSD can make the computer feel snappier, faster.
Windows will load faster, Program will open faster, Malware scans will run faster. And anything that uses virtual memory will work faster.
I just finished upgrading the last computer to a SSD. This one in fact. It has made a difference in the way the computer operates as far as the things I listed above. As You may be able to tell I like the boost a SSD gives to a computer.
Since I started changing to SSD drives I have been using Intel 320 series and Samsung 840 EVO SSDs
If you decide to go to a SSD to replace your boot drive I suggest getting a retail kit that has a USB adapter and a SSD to enable migrating Your current drive to the new one. Or buying the USB to SATA adapter separately. Intel and Samsung both have free software that You can download to migrate your old drive to the new SSD.
Be prepared for sticker shock and be sure to read the user reviews for other drives and also avoid the brand that is in bankruptcy. You may see them cheap but.....