I'm Going to have my computer dual boot Windows XP and Windows 7. Windows 7 works great on this system but I'm not sure if XP will be all that great.
Specs:
System: Dell Optiplex 9020
CPU: i7-4770
HDD:256gb SSD
RAM: 8gb DDR3
Windows XP just might be able to tolerate the specs with a few drivers, I just don't know which.