Nvidia Computer Hardware manual Step ONE, Step TWO, Determine your power needs

NVIDIA SLI is a revolutionary technology that allows two NVIDIA SLI graphics cards to work together to deliver incredible 3D graphics performance.

To assist the do-it-yourself community, NVIDIA is providing the following guide on how to set-up an NVIDIA SLI system.

Note: this guide assumes basic knowledge of how to build or upgrade a PC. If you do not feel comfortable with this level of know how, please refer to our list of where to buy pre-built NVIDIA SLI systems, or refer to other resources on how to build or upgrade a PC.

STEP ONE

Determine your NVIDIA SLI component and operating system needs:

The following components are required:

1.An NVIDIA SLI-certified motherboard with NVIDIA SLI Connector

2.Two NVIDIA SLI-certified add-in cards

3.Windows XP operating system

Check here for a list of NVIDIA SLI-certified motherboards and add-in-cards, for the best gaming and application experiences.

STEP TWO

Determine your power needs:

Based on testing at NVIDIA’s SLI Validation lab, the following power supply suggestions should be followed.

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

If the power supply specifies two 12V windings (i.e. 12V1 and 12V2), then these current numbers can be added 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 a PCI Express auxiliary power supply connector: