explanation of shared ram use for GPU and system ram.

my system specs are in my signature at the bottom of the post.

I understand what the dedicated ram is for on the GPU itself and what the ram is for the system but why is there shared ram for a CPU with out GPU integrated and no integrated graphics on the motherboard?

where I am seeing this is in Display, Screen resolution, then clicking on Advanced Settings.

I see Total Available Graphics Memory 6869 MB

Dedicated Video Memory 3072 MB

System Video Memory 0 MB

shared System Memory 3797 MB

Why is there shared memory when there is more than enough dedicated memory?

EDIT: Windows 7 Home Premium x64
2 answers Last reply Best Answer
More about explanation shared ram gpu system ram
  1. Best answer
    Because your video memory has to be addressed by your system memory. If you buy a video card with 1GB of memory, it gets physically addressed or mapped by your system memory (6GB of system memory in my case) giving me a working memory of only 5GB. It can best be explained by reading this:
  2. Thank you for the link you provided it was very informative. Although i found it little tough reading at first but eventually understood it. :-)
Ask a new question

Read More

GPUs RAM Memory Graphics