Some GPU related Questions

[Indus Monk]

NOTE: I may add questions afterwards by editing this post.

 

Q1: what is it that determines how much of the GPU VRAM is used(I don't think resolution plays a role here)?

 

Q2: Why are low end 2-4 GB GPU's can use no more than 512-1098 MB of memory?

 

Q3: Why does SLI'ing &/or Cross-firing doesn't double the Performance or the total GPU memory available?

[Firearm2112]

1. resolution, and how intense textures are in the game your playing

2. what? pretty sure they can use all of it. of course if you have like a GTX 750 with 12 GB of vRAM, the GPU will not be physically powerful enough to handle all the memory. but on other cards like the 760 and 770 4gb variants it should use all of it.

3. it dosent exactly double it, unless sli scaling in the game is good. it does not double the memory. it will increase performance however

[Indus Monk]

1. resolution, and how intense textures are in the game your playing

2. what? pretty sure they can use all of it. of course if you have like a GTX 750 with 12 GB of vRAM, the GPU will not be physically powerful enough to handle all the memory. but on other cards like the 760 and 770 4gb variants it should use all of it.

3. it dosent exactly double it, unless sli scaling in the game is good. it does not double the memory. it will increase performance however

when i say low end cards, i mean cards like the R7240-R7260x or the GT610-GT850.

[DeViLzzz]

 

 

Q3: Why does SLI'ing &/or Cross-firing doesn't double the Performance or the total GPU memory available?

With DirectX 12 it supposed to make use of all GPU memory making say SLI 4 GB card have 8 GB of memory available and used in the right situations.

[Indus Monk]

With DirectX 12 it supposed to make use of all GPU memory making say SLI 4 GB card have 8 GB of memory available and used in the right situations.

THAT better be true

[D2ultima]

NOTE: I may add questions afterwards by editing this post.

 

Q1: what is it that determines how much of the GPU VRAM is used(I don't think resolution plays a role here)?

 

Q2: Why are low end 2-4 GB GPU's can use no more than 512-1098 MB of memory?

 

Q3: Why does SLI'ing &/or Cross-firing doesn't double the Performance or the total GPU memory available?

vRAM information guide in my signature will answer these questions and clear up your assumptions.