hmm...Not really, because the rear exhaust is towards the right of the case, while the expansions slots, are more towards the left.
Although I can't really say, because I don't have an Antec 900. I'm just looking at the pictures. Ask some of the Antec 900 owners here, such as nosboost.
Although I can't really say, because I don't have an Antec 900. I'm just looking at the pictures. Ask some of the Antec 900 owners here, such as nosboost.