Your case has a VGA Clearance Maximum 230mm w/ hard drive, 330mm w/o hard drive. I'm assuming your GPU is in between those numbers and that's what you are asking?
The way I understand it is, you have room for 8 hard drives. If you fill all the bays, you won't have room for a graphics card longer than 230mm. But if you leave the top two or three hard drive bays directly in line with the PCI-express card will be, a 330mm card can fit. See the pic below. At least, that is my understanding of what they are saying.