Thursday, July 3, 2008

NVIDIA's Hybrid SLI with GeForce Boost

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Hybrid SLI® technology, based on NVIDIA’s industry-leading SLI technology, delivers multi-GPU (graphics processing unit) benefits when an NVIDIA® motherboard GPU is combined with an NVIDIA discrete GPU. Hybrid SLI increases graphics performance with GeForce® Boost and provides intelligent power management with HybridPower™.

HybridPower unleashes graphics performance when needed and switches to quiet, low-power quiet operation for everyday computing. Combine an NVIDIA Hybrid SLI-enabled GPU into a NVIDIA Hybrid SLI-enabled motherboard (mGPU) for the ultimate control. Dial up performance for demanding 3D games and applications; downshift to the mGPU to reduce noise and extended battery life for everyday computing tasks like browsing the Web, word processing, or watching High Definition videos.

GeForce Boost turbocharges the performance of NVIDIA discrete GPUs when combined with NVIDIA motherboard GPUs. Plug any NVIDIA Hybrid SLI-enabled GPU into any NVIDIA Hybrid SLI-enabled motherboard to enjoy additive performance and more for your money.

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Hybrid SLI FAQ

Q: Which OS supports Hybrid SLI?
A: Hybrid SLI is supported only by Windows Vista. It is currently not supported with any other operating system.

Q: What happens when a user tries to enable Hybrid SLI when the
motherboard GPU is disabled?
A: The API will prevent user from enabling hybrid SLI when the motherboard GPU is disabled. The API will indicate ‘performance mode’ and will not allow user to transition to ‘Energy Saver’ mode.

Q: Will performance of GeForce Boost increase if the frame buffer size of
mGPU is increased? Is there a minimum frame buffer size required for
GeForce Boost?
A: The minimum frame buffer size of the mGPU required for GeForce Boost support is 256MB. The performance of GeForce Boost depends on the processing powers of the dGPU and the mGPU and other system factors. For best scaling, a dGPU that is recommended for GeForce be used along with the a Hybrid SLI enabled motherboard GPU

Q: When one monitor is connected to the mGPU and one monitor is
connected to the dGPU, can the dGPU still run at x16 mode?
A: Yes. The dGPU will be able to run at x16 mode.

Q: What is the maximum number of monitors that can be connected in a
system that has onboard GPU and dGPU?
A: Two displays can be connected to the mGPU and two displays to the dGPU. When both display adapters are enabled, the system will be in multi adapter mode. Neither GeForce Boost nor HybridPower is supported when the system is in multi adapter mode.

Q: Will GeForce Boost performance increase if the dGPU or mGPU refreshes the display?
A: There are several variables that control the amount of scaling provided by GeForce Boost. GeForce Boost performance is comparable if either dGPU refreshes the display or mGPU refreshes display.

Q: Which hybrid mode should the user enter to best support HD DVD/Bluray playback?
A: Both Hybrid-Performance and Hybrid-Power modes deliver excellent playback of HD DVD and Blu-ray DVD titles at full 1080p resolution. Hybrid-Power mode is recommended as it will offer the best acoustic and low power experience when watching high definition content

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