SSD's give new life to older PC's too and add a reliability feature.
Just loaded XP on an old PATA HDD to get 20 years of tax data off the old PC for a local Lawyer. His old tax software, MS-Dos based on 8 flopies which only runs on 32 bit software. Fortunately, I had a used copy of Win 7 32 bit though I had to call Microsoft to get it activated. It was a challenge but a quick $500, nonetheless.
Now I can go grocery shopping and put gas in my car.