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How does Nvidia use system memory?

post #1 of 6
Thread Starter 
How big a system memory buffer does it use? How does it decide how large an area to use? How does the system memory performance affect the graphic card performance?
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post #2 of 6
System memory?

That's turbocache on the lower end cards like the 8500GT

The higher end cards have their own memory
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post #3 of 6
Thread Starter 
Then explain this, it can reach 2GB when I had 8GB of memory installed.

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post #4 of 6
Quote:
Originally Posted by DavidNJ View Post
Then explain this, it can reach 2GB when I had 8GB of memory installed.
o.o

I have no idea how that's happening.
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post #5 of 6
that's a vista thing, not Nvidia. for the most part you usually won't use the system memory if you have 512 MB Vram or more. it's just there because it's better than having nowhere for the data to go at all if your game tries to load more into the Vram than you have space for.
post #6 of 6
Thread Starter 
Yes, a Windows thing...but the driver has do know about it. A 512 card is still memory limited in many circumstances, witness the advantage of 1GB cards.
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