這就很神奇了
希望有神人能破解
或教大家如何修改 .cfg .ini

找到了!
從這邊
http://tehparadox.com/forum/f18/bat...etting-6136992/

看到這個
http://battlefield.realmware.co.uk/...ditor/downloads

理論上32bit照樣可以Ultra了吧?

VRAM不夠吃主RAM

主RAM不夠....不用太懷疑，就是吃分頁檔

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

問題的根源其實在於遊戲引擎
遊戲引擎可不像NFS或Call of duty 一兩年就推出一代
而是推出一代引擎之後 還會再一直refine、小改版....直到真。下一代遊戲引擎出來
而且一部遊戲大作兩年出一次就算很快了
引擎沒撐個五六年就虧了
現在的遊戲有些還是四五年前的引擎做的game
所以大多還是32bits 不用太意外

但也別把那種少數追技術追很快的引擎如Crytek 當常態

確認32bit照樣可以Ultra
除了沒有帆布

我今天發現了桌面捷徑直接寫64bit...

資料夾兩個可執行檔都有
bf4是64bit
bf4_x86是32bit用的

這網站測試的在下不知道是啥條件...
只是下在可以確定64bit下面跑BF4雖然RAM/VRAM吃不到2GB但是也不會
像這測試裡面的數字吃這麼少;;;;
在下光是進單機任務就吃掉RAM 1.5GB了，64人大地圖打久了大概吃掉RAM
1.7~1.8GB徘徊，而VRAM部份則是都在1.8GB左右(Res.1920X1200全開)
至於32bit為啥限制一堆的問題，在下猜測原本用意是對抗盜版和3D引擎架構
修改有關，老實講在下並不覺得會出patch改回來.