fritz°
Lt. Commander
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- Apr. 2002
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http://www.nvidia.com/object/IO_17361.html
The TurboCache Manager (TCM) lets additional memory be allocated for graphics
usage based on application need. Once the application is closed, the memory that
was allocated for graphics usage is then released and made available for system use.
This is done behind the scenes and varies from application to application. In this
way, TurboCache technology balances overall system bandwidth utilization during
rendering by intelligently distributing the load between local graphics memory and
system memory. The scanout buffer for display refreshes is always stored in the
local graphics memory.
http://www.anandtech.com/video/showdoc.aspx?i=2300&p=2
NVIDIA only maps free idle pages from RAM using "an approved method for Windows XP." It doesn't lock anything down, and everything is allocated and freed on they fly. In order to support 128MB of framebuffer, 512MB of system RAM must be installed. With more system RAM, the card can map more framebuffer. NVIDIA chose 512MB as a minimum because PCI Express OEM systems are shipping with no less. Under normal 2D operation, as there is no need to store any more data than can fit in local memory, no extra system resources will be used. Thus, there should be no adverse system level performance impact from TurboCache.
blablubb
The TurboCache Manager (TCM) lets additional memory be allocated for graphics
usage based on application need. Once the application is closed, the memory that
was allocated for graphics usage is then released and made available for system use.
This is done behind the scenes and varies from application to application. In this
way, TurboCache technology balances overall system bandwidth utilization during
rendering by intelligently distributing the load between local graphics memory and
system memory. The scanout buffer for display refreshes is always stored in the
local graphics memory.
http://www.anandtech.com/video/showdoc.aspx?i=2300&p=2
NVIDIA only maps free idle pages from RAM using "an approved method for Windows XP." It doesn't lock anything down, and everything is allocated and freed on they fly. In order to support 128MB of framebuffer, 512MB of system RAM must be installed. With more system RAM, the card can map more framebuffer. NVIDIA chose 512MB as a minimum because PCI Express OEM systems are shipping with no less. Under normal 2D operation, as there is no need to store any more data than can fit in local memory, no extra system resources will be used. Thus, there should be no adverse system level performance impact from TurboCache.
blablubb
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