Dedicating more Ram to Graphics Card?

Hey. I was wondering if anybody knows how to dedicate memory to graphics card. I'm using a XFX nForce 750i SLI Extreme NVIDIA nForce 750 Motherboard, with an EVGA GeForce 8400 GS Video Card. I'm running windows 7 64-bit. I have 8 gigs of ram so I figured it'd be worth it. I looked in my bios but can't seem to find any options for this. Thanks in advance to anyone who can help.

It should be in the bios somewhere but it's not going to make a significant difference. The highest amount of RAM available to dedicate is 256MB and it's only used as overflow as far as I know. I think it only really applies to onboard video anyway to help it out, as it's always a lot weaker than a dedicated gfx card. You're best best is really to stretch to a new card :)

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