Mac Mini for editing uncompressed full HD videos?

I'm thinking about buying the Mac Mini, but I don't know if it's capable or even powerful enough to edit uncompressed full HD videos. I'm looking to buy the i7 quad-core model. While upgrading the RAM myself. Or, is the i5 dual-core more than enough to edit uncompressed HD video, as well? If not, should I get the least expensive, 21.5-inch iMac instead? I will be using Final Cut Pro X to edit. Oh, and they're game play footage. Nothing like RED, which will need to have a super computer to edit.