A CPU and motherboard manufacturer focussed mainly on tech rather than high clock speeds. While their processors are stronger than AMD processors, they are also quite a bit more pricey. If money's not a problem, then Intel is the way to go. I also recommend getting an aftermarket cooler as their stock fans aren't very good.
Man 1: I just got an Intel i7 920!!! I'm gonna tear through all my games and work!
Man 2: You realized you just spent about $300 on a quad-core when you could've gotten an AMD Quad-core CPU for like $100-$180?
A line of video cards made by ATI and the next series after the standard Radeon series. These video cards are typically stronger, faster and have more features such as Eyefinity, ATI Stream, and Avivo HD. However, the latest cards are relatively large and quite expensive. The latest is the HD 5970 which is known as on of the fastest cards to date. The latest series in the Radeon HD line is the 5XXX series which was meant to have Microsoft's DirectX11 integrated and widely available on the market.
Man: "Dude!!! I just got a Radeon HD 5970 for my computer!!! It's gonna pwn some ass!!!"
Friend: "Do you have a full tower case to fit it in?"