Graphics Card fit in case?

Well I will say that you should go to nvidia's website, check the length of the gtx 260. Then you should see the case length, however its best just to google it, and see if anyone else has that case along with that card. That case doesn't seem to be very popular, so I don't know. Also make sure it has enough expansion slots ( but don't worry about that the gtx260 i think is a dual slot gpu, it will fit slot wise)
Also make sure your motherboard will fit that card.

Hope this helps  

A GTX 260 will fit into an Antec 300 case, which is slightly smaller than your RAIDMAX, so I say you'll have no issues with the graphics card