Nvidia 680I LT SLI - Manual (Page 74)

Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
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Appendix III: SLI (Scalable Link
Interface) Setup
Introduction
NVIDIA SLI (Scalable Link Interface) is a revolutionary technology that allows two NVIDIA SLI
graphics cards to work together to deliver incredible 3D graphics performance.
Your new motherboard can support up to three PCI Express graphics cards, two linked using
SLI and one dedicated to CPU physics.
Determine Component and Operating System Needs
To build an NVIIDA SLI system, you are going to need the following components:
Two NVIDIA SLI-Ready certified PCI Express graphics cards
An NVIDIA SLI-Ready power supply
Microsoft ® Windows ® XP operating system
For a complete list of certified components and a matrix to determine the power supply
required for your particular graphic cards, go to:
http://www.slizone.com/content/slizone/build.html .
While NVIDIA recommends an SLI-Ready power supply, the following table provides some
general power supply recommendations based on testing performed in the NVIDIA SLI
validation lab.
Recommended Power Supplies
If the power supply specifies two 12V windings (i.e. 12V1 and 12V2), add these numbers
together to check against the specifications described above.
For systems with the 6800 Ultra or 6800 GT, please make sure the power supply also contains
PCI Express auxiliary power supply connectors. If your power supply does not have a PCI
NVIDIA SLI System Type
Minimum Recommended PCI
Express Power Supply
High-End: GeForce 6800 Ultra 500W–550W, +12V @ 30A
Mid-Range: GeForce 6800 GT or 6800 420W–480W, +12V @ 25A
Entry-Level: GeForce 6600 GT 350W–420W, +12V @ 20A