Generally speaking the important thing is have the correct PCI-E slot, the 690 will require a x16 PCI-E slot, it'll be designed to work with PCI-E 3 but PCI-E is backwards compatible, so a PCI-E 2 slot will work as well, what will be more important is making sure your PSU is up to the task.
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http://www.twitch.tv/SkidInc"Imagination is the only weapon in the war against reality."