| Wh1pL4shL1ve_007 said: Im planning to buy a 7670 Radeon HD graphics card.. but I came in to a dilemma. What does a 2gb dedicated graphics memory do to the computer performance? as compared to... say.. 1gb dedicated graphics memory?
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What does it do?
Simply put the memory on a graphics card is a high-bandwidth cache that stores information such as textures and other data.
If it gets full, then that data will be stored in System Ram instead then streamed.
2gb of memory or more is most important when you are running extremely high resolutions like 5760x1080 or 2560x1600 with high-resolution textures.
Both of which a Radeon 7670 (Which really is a re-named Radeon 6670) is not able to handle.
Also worthy of note is that with lower-end cards you want faster memory not larger, lower-end cards with lots of memory usually go with GDDR3 memory instead of GDDR5 which has a massive impact on performance as the bandwidth is essentially cut in half.
If you can find one, a Radeon 5770/6770 can be found really cheap which is a massive upgrade over a 6670/7670, otherwise go for a Radeon 7750/7770 if you can at a minimum.
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