"Victek" <Victek@invalid.invalid> wrote in message
>> If you are running 2d applications, everything except gaming, there is no
>> change to the system memory footprint regardless of the amount of RAM on
>> the videocard. The demands of 2d applications, including Photoshop/video
>> processing, are minimal with regard to even motherboard based video let
>> alone decent stand-alone cards. The exception is if you are trying to run
>> a large panel with a high resolution at high refresh rates. but few of us
>> will ever do that.
>> If you are 3d gaming then you want the fastest video card with the
>> fastest and largest amount of memory you can afford.
> Interesting, but how is it determined? I currently have a video card with
> 128 megs on it. I have 4 gigs installed and the Vista x86 task manager
> reports 3453 MB available (on the performance tab). Are you saying if I
> install a video card with say 512 megs it will not change the available
> amount of ram stated in the task manager?
If your video card is PCIe, and you upgrade to a 512MB card, your
available RAM will drop to the 3100MB range, which is about what
most people with 512MB cards have available.
One thing of note is that of the 4GB of 32 bit virtual address space an
application is allotted 2GB, and the other 2GB is allotted to the OS.
Unless they are what's called "large address aware", applications don't
have access to more than 2GB of address space, which equates to
2GB of RAM in a 3 or 4GB system. Also, the /3GB and /userva=
switches have to be set, in boot.ini for XP. The increaseuserva
command is used in the 32 bit Vista bootmgr. In 64 bit Windows,
large address aware apps have access to 4GB.