The SE2011 version is for Socket 2011 for Intel-based processors, so you don't need that version.
The Noctua NH-D14 is, however, one of the best air-cooling solutions money can buy. It is perfectly good the way it is. I believe it still is on sale for $75-80, which is a pretty good deal. If you're willing to spend that much, but all means, go for it!