AMD Radeon HD 7990 User Manual page 18

12 AMD CrossFire™ Technology
4. Remove any unneeded graphics cards from the computer.
5. Locate the PCIe slots on the motherboard. If necessary, also remove the
corresponding back panel cover.
6. Leaving one empty slot between graphics cards, align the new graphics card in
the second slot away from the existing graphics card and press firmly until the
card is fully seated.
Tip: For optimal performance in a dual-GPU AMD CrossFire configuration,
make sure that each AMD Radeon HD 7990 graphics card is separated by at
least one empty expansion slot.
Figure 4–1 Correct Installation
AMD Radeon™ HD 7990 Graphics
Warning:
Some graphics cards can get hot while operating. Wait approximately five
minutes after turning off the computer before touching the card.
© 2013 Advanced Micro Devices, Inc.