Dell XPS 730 (Late 2008) - Manual (Page 33)

Replacing a PCI/PCI Express Card 31
Installing Graphics Cards for Multi Graphics Card
NOTE: To upgrade to or downgrade from a dual- or triple-graphics card
configuration, you may need additional parts that can be ordered from Dell.
This section pertains to using dual and triple PCIe graphics cards to take
advantage of NVIDIA’s SLI (Scalable Link Interface). For installation of other
types of PCI or PCIe cards, see "Replacing a PCI/PCI Express Card" on
page 27.
Some expansion card slots will not be available for use if a dual-slot graphics
card is installed in any of the PCIe x16 card slots. If you are upgrading from a
single-slot graphics card to a dual-slot graphics card, you will need to remove
any card installed in these expansion slots. To remove a PCIe card, see
"Replacing the PCI and PCI Express Cards" on page 35.
CAUTION: For information about upgrading your system to use NVIDIA SLI
(Scalable Link Interface) multi-graphics technology, see the Dell support website
at support.dell.com.
1 Follow the procedures in "Before You Begin" on page 13.
2 Remove the computer cover (see "Replacing the Computer Cover" on
page 17).
3 Remove the captive screws on top of the PCI card fan shroud and remove
the shroud.
4 Remove the filler bracket or existing graphics card to create a card-slot
opening.
NOTE: If you are upgrading to a multi-graphics card configuration and have a
card installed in the PCIe x1 card slot, remove the card (see "Replacing the
PCI and PCI Express Cards" on page 35).
5 Install two SLI-ready graphics cards into the two outer PCIe x16 slots on
the system board.