Why does dxdiag in Vista say that i have 1777mb graphic card memory when i have 512mb?

i have an nvidia geforce EN9400GT 512 mb video card, but DirectX Diagnostics says that i have a mammoth 1777mb video memory.



I am currently running WinVista Home Premium, but WinXP shows the correct 512mb. Do you know why this is?



Thanks a bunch!!!|||It is not a bug in Vista, it works the same in Windows 2000,XP,2003 and even Windows 7 (which I am running).



The Windows OS will allocate memory (physical) to your graphics processing, however this does not take into consideration how much memory your video card has. When it starts producing graphics, it uses the buffer from the memory on the card and windows will allocate some memory to help out, of course the more memory your card has the less windows will actually need to offset to help. This is due to Direct3D!.



Good Luck

Keith Mitchell,Server Engineer,Hostmysite.com|||You have a switch in BIOS that probaby dedicates part of physical RAm TO VIDEO RAM. Go into BIOS and check and see if you have set dedicated video ram to 1 gig.|||Its probably just another one of the infinite glitches in Vista, but I wouldn't worry about it.



Lets pray Win7 is better!!!|||thts just vitual memory not physical memory