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Video Mirroring on a Ti
Authored by: BigMac2 on Jan 27, '03 11:42:34AM

BTW you have to keep in mind the video mirroring on a Ti is more like a duplicat of the same picture on a other video card, the system have to write the information twice in the vram in Mirror mode, so if you want better performance for viewing huge Quicktime Movie you should desable the mirroring option.



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Video Mirroring on a Ti
Authored by: AReeves on Jan 27, '03 12:24:33PM

The displays were not mirrored, it was extended desktop. Would that have the same performance hit?



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Video Mirroring on a Ti
Authored by: kholburn on Jan 27, '03 06:18:58PM

Mirroring can in theory be done in hardware with no performance hit at all but extended desktop adds to the desktop area so always has a performance hit.

In addition if you have an older system and are using Jaguar you might well get Quartz Extreme on your main monitor but not on your extended desktop because your graphics card doesn't have enought memory



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Video Mirroring on a Ti
Authored by: BigMac2 on Jan 28, '03 12:37:57PM

That was true on older Powerbook, but the Radeon chipset used 2 separeted DAC and if you check the available VRAM, you will got only the half even if you are in Mirror mode.



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