New Vista hotfix improves multi-GPU performance

Vikingod · Dec 5, 2007, 02:07 PM

Source: Tech Report
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Gamers who run Windows Vista with SLI or CrossFire setups will be happy to know that Microsoft has released a hotfix just for them. The KB945149 hotfix resolves an issue that, in some cases, could cause systems with multiple graphics cards to "perform more poorly than expected" in both games and benchmarks. Microsoft describes the issue as such:

A graphics processing unit (GPU) or part of a GPU link may incur a small scheduling latency on a new Direct Memory Access (DMA) packet. This is true if the DMA packet is submitted to the GPU that has previously run out of work and if another GPU in the linked configuration is very busy. In some scenarios, significant starvation of one or more GPUs in the linked configuration reduces the expected performance of an application.

Dec 5, 2007, 02:07 PM	#1
Vikingod Int'l Fish Liaison Join Date: Jul 2004 Location: By the light of lamp I sit and type... Posts: 16,197 Rep Power: 112 System Specs	New Vista hotfix improves multi-GPU performance Source: Tech Report ____________ Gamers who run Windows Vista with SLI or CrossFire setups will be happy to know that Microsoft has released a hotfix just for them. The KB945149 hotfix resolves an issue that, in some cases, could cause systems with multiple graphics cards to "perform more poorly than expected" in both games and benchmarks. Microsoft describes the issue as such: A graphics processing unit (GPU) or part of a GPU link may incur a small scheduling latency on a new Direct Memory Access (DMA) packet. This is true if the DMA packet is submitted to the GPU that has previously run out of work and if another GPU in the linked configuration is very busy. In some scenarios, significant starvation of one or more GPUs in the linked configuration reduces the expected performance of an application.