\*\*\* THIS CARD will take 3 slot instead of 2 ! edit - this card be great if you only plan to RUN one card , HOWEVER EVEN ON MY EXTENDED ATX MOTHERBOARD -lrb- I run on the asus iv rampage extreme-z -rrb- two card take up the entire BOARD of 5 slot ! if you run one monitor you will be SET with one card for sure , HOWEVER if you run eyefinity like me , XFIRE be GOING to be a have to THING SOON with unreal engie 4 in ORDER to keep it at OPTIMAL performance and with this card ... XFIRE be NOT possible on most motherboard comfortably which be QUITE IRRITATING to buy only to find you have to sell it in ORDER to get ANOTHER 7970 that size for xfire , just go with a reference card if you plan to XFIRE , you will be MUCH HAPPIER ! I receive this card about a week ago to go with my new upgrade for my desktop . this thing perform like a champ ! the dual bio switch be awesome because bio set 2 `` unlock '' the card to overclock it and if it crash anytime just switch it to bio 1 and you be good to go ! this card be large , but not any larger than the 6870 it replace in my opinion . I would however recommend get 1 card before purchase 2 to make sure you motherboard be big enough to take both card . I run the extended ATX Asus Extreme iv motherboard and I plan to crossfire 2 of they and will still have enough room for one slot for a wifus card or something small . card be amazing all around though and do not regret spend the $ 450 on it for a second , one of these will handle eyefinity at med-high setting which be what I plan to do ! ca not ask for more out of a grahic card !