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  • The link you posted explicitly states: "You can run 32-bit applications in 64-bit Windows with no problems." But here you're suggesting that I should "stick with x86" if I run x86 apps. Which is it? Commented Feb 15, 2011 at 13:08
  • @JohnnyW: if the program is older, then you should definitely stick with x86...however, many newer (think last several years, since around when Vista was released) x86 programs will work on x64...
    – studiohack
    Commented Feb 15, 2011 at 13:10
  • So, according to you, games like Fable, Darwinia, Uplink, Battlefield 2, Civ III & IV, Call of Duty 2, Half Life 1 & 2, Psychonauts, Knights of the Old Republic 1 & 2, Grand Theft Auto III & San Andreas, etc. (all of which were released years before Vista) are too old to reliably run under Windows 7 x64? Is that right? Commented Feb 15, 2011 at 13:33
  • I know for a fact Knights of the Old Republic works GREAT! One of my favorites I play it at least once a year. But I think Studiohack was saying you can't be certain games that old will run without problems on windows 7 x64. Unlike games such as Crysis and GTA 4 (which you can say for certain will run on x64) The only way to know for sure is to try them. Commented Feb 15, 2011 at 14:00
  • @JohnnyW: like I said in the very first line, it depends lot on the program! I don't have any of these games, so I can't tell you for sure...perhaps install Windows 7 x64 in a VM and run it for 30 days on a trial and test your games...can't really do much more for you than that...
    – studiohack
    Commented Feb 15, 2011 at 16:06