Memory Cache - TYAN Tiger i7320 User Manual

Tiger i7320 S5350

3.3.2 Memory Cache

This setting allows you to tweak the various cache settings for optimal performance of your
system.
Press Enter to display the various cache settings.
Cache System BIOS Area
This feature is only available when the system BIOS is shadowed. It enables or disables the
caching of the system BIOS ROM at F0000h-FFFFFh via the L2 cache. This greatly speeds
up accesses to the system BIOS. However, this does not necessarily make the system
perform better because the OS does not need to access the system BIOS often.
As such, it would be a waste of L2 cache bandwidth to cache the system BIOS instead of data
that are more critical to the system's performance. In addition, if any program writes into this
memory area, it will result in a system crash. So, it is recommended that you write protect this
area for optimal system performance.
NULL / Write Protect
Cache Video BIOS Area
This feature is only valid when the video BIOS is shadowed. It enables or disables the caching
of the video BIOS ROM at C0000h-C7FFFh via the L2 cache. This greatly speeds up
accesses to the video BIOS. However, this does not necessarily make the system perform
better because the OS bypasses the BIOS and uses the graphics driver to access the video
card's hardware directly.
As such, it would be a waste of L2 cache bandwidth to cache the video BIOS instead of data
that are more critical to the system's performance. In addition, if any program writes into this
memory area, it will result in a system crash. So, it is recommended that you write protect this
area for optimal system performance.
NULL / Write Protect
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Chapter 3: BIOS Setup