Symptom(s):

• The game or application reports AGP is off or disabled.
• Microsoft DirectX* Diagnostic Tool (dxdiag.exe) shows AGP Texture Acceleration is "Not Available" on the "Display" tab.

Cause:

If the graphics driver reports all of the video memory is local, the DirectX AGP Texture Acceleration setting shows "Not Available". If some or all of the video memory reported is non-local, the AGP Texture Acceleration setting shows "Available."

Older Intel graphics drivers (Production Versions 13.x) report all of the video memory as non-local video memory (AGP memory). Therefore, the AGP Texture Acceleration setting shows "Available."

Newer Intel® graphics drivers (Production Versions 14.x) do not report non-local video memory. Instead all of the video memory is reported as local video memory. It is normal and expected behavior that the AGP Texture Acceleration setting shows "Not Available" on computers using newer Intel graphics drivers because non-local video memory is not being reported by the driver.

Note: With the Intel graphics drivers (Production Versions 15.x) on the Windows Vista* operating system, AGP Texture Acceleration shows as "Available." While the Intel graphics driver still reports only local memory, Windows Vista controls the memory management and interprets the Intel graphics aperture as non-local memory. To further clarify, the graphics aperture is a contiguous virtual memory space where the Intel graphics driver initiates access to the graphics memory.

Solution:

Having the AGP Texture Acceleration setting as "Not Available" is a normal and expected behavior for the Intel graphics drivers (Production Versions 14.x). This setting does not need to be made available, enabled, or activated and does not affect the performance of games or 3D applications.

If you have a game or application checking for AGP or AGP Texture Acceleration, it is looking for non-local memory. In general, local video memory is usually faster than non-local. Therefore, Intel recommends contacting the game or application vendor if they have a setting or update that allows the game or application to check for local video memory first.

Operating System:

Windows 2000*, Windows XP Professional*, Windows XP Home Edition*, Windows XP Tablet PC Edition*, Windows XP Media Center Edition*

This applies to:

Intel® 3 Series Chipsets Intel® 4 Series Chipset Intel® 82830M Graphics and Memory Controller Hub (GMCH) Intel® 82845G Graphics Controller Intel® 82852/82855 Graphics Controller Family Intel® 82865G Graphics and Memory Controller Hub (GMCH) Intel® 82915G/82910GL Express Chipset Family Intel® 82945G Express Chipset Intel® 82946GZ Graphics Controller Intel® 82G965 Graphics and Memory Controller Hub (GMCH) Intel® 82Q963 Graphics and Memory Controller Hub (GMCH) Intel® 82Q965 Graphics and Memory Controller Hub (GMCH) Intel® 830 Chipset Intel® 845 Chipset Family Intel® 850 Chipset Family Intel® 852/855 Chipset Family Intel® 865 Chipset Family Intel® 910 Express Chipset Family Intel® 915 Express Chipset Family Intel® 945 Express Chipset Family Intel® 946 Express Chipset Family Intel® 965 Express Chipset Family Intel® G31 Express Chipset Intel® G33 Express Chipset Intel® G35 Express Chipset Intel® G41 Express Chipset Intel® G43 Express Chipset Intel® G45 Express Chipset Intel® Q33 Express Chipset Intel® Q35 Express Chipset Intel® Q43 Express Chipset Intel® Q45 Express Chipset Mobile Intel® 4 Series Express Chipset Family Mobile Intel® 910GML Express Chipset Mobile Intel® 915 Express Chipset Family Mobile Intel® 915GM/GMS, 910GML Express Chipset Family Mobile Intel® 945 Express Chipset Family Mobile Intel® 945GM Express Chipset Family Mobile Intel® 965 Express Chipset Family