|You can't set it manually - it's set "dynamically", automatically.|
I searched using: Sony Vaio vgn-tz31mn
- is it a UK model ?
- "Graphics chipset Intel GMA 950"
- "System Graphics Intel® Graphics Media Accelerator 950 "
Intel® Graphics Media Accelerator 950
"Optimization of System Resources
Dynamic Video Memory Technology (DVMT) 3.0 supports up to 224MB of video memory; system memory is allocated where it is needed dynamically."
Intel® 82915G/82910GL Express Chipset Family
Dynamic Video Memory Technology (DVMT 3.0) questions and answers
"What is Dynamic Video Memory Technology (DVMT)?
DVMT is a concept used in the Intel® 82915G/82910GL Express Chipset family and the Mobile Intel® 915GM/GMS, 910GML Express Chipset family wherein the optimum amount of memory is dynamically allocated and de-allocated as needed for balanced 2D/3D graphics and system performance. DVMT allocates the proper amount of display, texturing, and buffer memory after the operating system has booted."
"When is DVMT triggered?
DVMT is triggered any time an application needs video memory above the amount that has been pre-allocated. It is triggered again when an application no longer requires the extra memory and the memory needs to be returned to the operating system.
DVMT may also be triggered at boot time if a screen resolution is set that requires more memory than the total amount set as pre-allocated memory.
Will DVMT always get the memory requested?
DVMT may not always get the memory being requested. It is up to the operating system to decide whether the request for additional memory will be granted or not. DVMT allows the operating system to make this important decision based on availability of system memory resources and other requests it may be receiving. "