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Since this is a laptop you won't be able to change the video card physically like the desktop computers. This Toshiba model has an ATI Radeon TM X1250 128MB-831MB dynamically allocated shared graphics memory. So that means by default it can provide a 128MB of graphics power, but if you increase the size of the memory you can also get up to 831MB of graphics memory therefore increasing or upgrading the available video memory of your laptop.
You can only do that with onboard video cards. If you have an onboard you can choose how much ram to assign to it in your bios settings. However it is limited and if you already have 128 assigned to it, that's probably about all it's gonna give ya. But hey it never hurts to check
Assigning your physical memory to your graphics card will result a shortage of your total system memory and your whole system will slow down a bit. Video cards meant for better processing the graphical content of your system and free up your system's physical memory.[via] So, if you buy a new and better video card with more memory you will have a fast system with better performance.
If its possible which I haven't been able to find info on, you can press the F2 button as you turn on the laptop to get into the BIOS and check in the different settings there to see if you can do it. If you don't see the option for it then it can't be done.
This model comes in 2 different flavors and I am unsure which one you have but here's the skinny on it: Option 1: ATI Radeon® Xpress 1100 chipset with integrated 3D graphics, up to 256 MB of shared system memory
Option 2: • ATI Mobility™ Radeon® X1300/X1600 with up to 512MB of HyperMemory™ (64MB of dedicated GDDR2 VRAM; up to 448MB of shared system memory), supporting
Regardless of which one you have, you should be able to set the shared memory in the BIOS, or you can use the Acer ePerformance Management software either installed on your machine already, or which can easily be downloaded from their website at this link:
What are you changing? The motherboard or one of the peripherals such as memory or video card or drive controller may not like the setting or may be incompatible with certain options causing the problem. You may also want to see if there is a bios update to address the issue.
You better try to increase the virtual memory of your system as seems you would nt be able to increase the pre allocated video memory to your video device.
The virtual thing you can do by going to the my computer's properties and then in advanced tab you find performance options .Here you can tweak your virtual memory accg to your systtem memory