The Venomous X-RT comes with one fan and AMD bracket.
The Venomous X Black comes with AMD bracket/no fans.
The Megahalems/Armageddon come with no fans and no AMD bracket.
Like the Raven 2 alot and it has very good cooling.http://www.silentpcreview.com/Silverstone_Raven_Two
I would opt for the Antec if it's cheaper.