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Windows 7: Hypermemory on graphics card

27 Mar 2010   #1
SmEkSiMe

Windows 7 Home Premium 64-bit
 
 
Hypermemory on graphics card

Hey guyz, when i first got my laptop it showed that Approx. Total Memory for my graphics card was 1919 MB (also known as my Hypermemory) in my DXDIAG. When I went to check it today, it only shows 1786 MB now... anyone know y?


My System SpecsSystem Spec
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27 Mar 2010   #2
ThePizzaMan

Windows 7 Ulitimate Beta 32 Bit, Windows Vista 32 Bit, Ubuntu 9.10 32 Bit
 
 

hm.... could be some of it was being used by other resources? maybe? since laptops share memory
My System SpecsSystem Spec
27 Mar 2010   #3
stormy13
Microsoft MVP

Win 7 Ultimate x64
 
 

You're confusing HyperMemory,


ATI HyperMemory?

which uses system ram up to a fixed point as needed (also called TurboCache on Nvidia cards) with how Windows 7 (and Vista) report video memory. Basically what it is is a pagegfile for the video card to use if needed, nothing is taken from system ram and it is a total of the dedicated video ram and the virtual memory allocated to the video card (based on the amount of system memory and dedicated video memory),

Quote:
Shared system memory is a portion of the system memory that can be used by the graphics subsystem when needed. For discrete graphics adapters, this type of memory is often referred to as “non-local video memory”—that is, far from the GPU. The shared memory is available to other subsystems or non-graphics applications when it is not being used by the graphics subsystem. Thus, it is never guaranteed to be available for graphics because it could already be in use.
from here (sorry it's a direct download link, can't find the page it originated from),

http://download.microsoft.com/downlo...hicsmemory.doc

It can get a little technical, but the basic concepts are fairly easy to follow.
My System SpecsSystem Spec
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28 Mar 2010   #4
SmEkSiMe

Windows 7 Home Premium 64-bit
 
 

I know what Hypermemory is..., it's just why does it show a lower number now as a total/whole?!?
My System SpecsSystem Spec
28 Mar 2010   #5
stormy13
Microsoft MVP

Win 7 Ultimate x64
 
 

That "total memory" in dxdiag is based on the amount of system ram, dedicated video ram and what Windows allocates to virtual video memory (like a pagefile). In your case it probably comes down to the card doing something more or less that caused the Hypermemory to use more or less of the system ram, and that would cause the change in the "total memory".
My System SpecsSystem Spec
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 Hypermemory on graphics card




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