應該還好...最多吃2GB上下
小弟VRAM有4GB

One of the biggest questions that we have been getting is whether 2GB of GPU VRAM memory would be sufficient to play Battlefield 4 at high levels of performance. During our gameplay experience with each card, we observed the actual VRAM usage did not exceed 2GB for each of the tests that we performed. At the 2560x1600 resolution, we typically observed anywhere from 1800MB to 2015MB used at any given time. We find this to be somewhat surprising, as it seemed like it would be likely to exceed the 2GB of VRAM on the 3GB R9 280X. Confirming the 3GB R9 280X, we did not observe video memory usage to exceed 2GB, but it was near the max on the GTX 770.


However, in reality, some of the slowdowns that we experienced on the GTX 770 (that we did not feel on the R9 280X) felt like the issue was related to an insufficient amount of video memory. More testing will be needed to flesh this out more, as the Beta also does not have the full graphics settings included in it. The full-version game may be more graphically intense, have more art assets, and have better image quality putting a greater demand on VRAM and performance.

http://www.hardocp.com/article/2013...mance_preview/4