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 Post subject: What's the Effect of VRAM on your System RAM?
PostPosted: Thu Sep 13, 2012 10:20 am 
Little Foot
Little Foot

Joined: Wed Mar 31, 2010 11:21 am
Posts: 118
Is there any correlation to the size of you GPU's VRAM to the amount of system RAM that the GPU reserves?


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 Post subject: Re: What's the Effect of VRAM on your System RAM?
PostPosted: Thu Sep 13, 2012 10:24 am 
Clawhammer
Clawhammer
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Joined: Fri Sep 23, 2005 6:22 pm
Posts: 4406
Location: In the closet
Of course, why? You do realize that this is a new function that only Kepler and Maxwell offer, yes? Because up until this happened Nvidia cards would run out of vram and cache from the paging file on your hdd or ssd.


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 Post subject: Re: What's the Effect of VRAM on your System RAM?
PostPosted: Thu Sep 13, 2012 10:31 am 
Smithfield
Smithfield

Joined: Sun Jun 18, 2006 7:37 pm
Posts: 5529
This is kind of tricky to answer, but I'm just going to relegate it to "whatever the OS feels like". But this isn't going to cut into your useable memory. It's probably only in cases when your GPU has maxed out its memory and is cutting into main memory for storing frame buffers (a 1920x1200x4 frame is only about 9MB, so it's trivial to transfer it back)


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 Post subject: Re: What's the Effect of VRAM on your System RAM?
PostPosted: Thu Sep 13, 2012 10:46 am 
Little Foot
Little Foot

Joined: Wed Mar 31, 2010 11:21 am
Posts: 118
I guess I'm only confused because I'm remembering how the old cards would have a certain amount of system RAM reserved for them because they had no onboard RAM.


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