is this a serious question? Most likely Windows 7 w/ SSD. lol most likely..100% actually. But if it was Win 7 vs Win 8 or Win 7 w/SSD vs Win 8 w/ SSD then Win 8 would win hands down. From what I remember with the same amounts of programs, same programs booting up, Windows 8 booted nearly 30 second faster for me. All my computers have HDD but my PC went from ~1 - 1.5 min to 45 seconds.