It will fit/connect to the socket, that's not what I meant. I meant some boards have tall heat sinks or other such things that can interfere with a big HSF like the V8. If you've already looked into it and your board won't have a problem then you'll be fine. As I said, the 900 is HUGE so you should be able to fit anything in there.
Just a quick word however. I was reading in another thread and I have to agree, there are many better options out there then the 900. It was a great case back in it's day, but if you are buying a case and haven't bought the 900 yet there are other options that are a better idea. Cable management is nearly non existent in the 900, and I think you need the 902 to have SSD/2.5" drive support and USB3. If you are reusing the case you are fine to do so, but if you are buying new I'd keep looking. Antec makes some great cases, but the 900 is past it's prime.