This CPU caught my eye today, it's a quad core with 8Mb cache and none of that half hearted on-board graphics, this thing only takes 69w too.
It's aimed at the server market but it's basically the same silicon as the i7 Ivy Bridge CPU.
If I was building myself a new PC today I think I would seriously consider it, a bit more research might be needed first.
http://www.ebuyer.com/370234-core-e3-1220v2-3-10-ghz-8m-box-bx80637e31220v2