Appendix Iii: Sli (Scalable Link Interface) Setup; Determine Component And Operating System Needs; Recommended Power Supplies - Nvidia nForce 680I LT SLI Hardware User Manual

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
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

NVIDIA SLI System Type
High-End: GeForce 6800 Ultra
Mid-Range: GeForce 6800 GT or 6800
Entry-Level: GeForce 6600 GT
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
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
®
XP operating system
Minimum Recommended PCI
Express Power Supply
500W–550W, +12V @ 30A
420W–480W, +12V @ 25A
350W–420W, +12V @ 20A
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