Video card question

Hello, I don`t really know if this is the correct section, but couldn`t find a Mac Hardware... Anyway, I`m new to Mac and I wanted to know how can I evaluate the different video cards that Macs have, for example what's the difference between ATI Radeon X cards and ATI Radeon HD? And more precisely, if I want to run a game that says that needs ATI Radeon X 1600 will it be `runeable` in a Mac that has ATI Radeon HD 2600 Pro?

Thanks

What model Mac are you thinking of? iMac? I have a 20" iMac from late 2007 and it has the ATI Radeon HD 2600.

What Game are you talking about?

Yeah, it`s an iMac 8,1 and the game is Football Manager 2011

Never messed with FootBall Manager 2011 but I will do some checking and get back. All I know is I can play GTA Vice City smooth but that is an older Game.

ok, did some reading to be sure. ATI 2600HD is 20-40% faster in some tests I saw than ATI Radeon X1600. So my guess, the Game will work fine.

Alright, thanks a lot man.