Radeon HD 7850 1G 2G 差異測試 - 顯卡

By Joseph
at 2012-09-10T21:06
at 2012-09-10T21:06
Table of Contents
[link] http://www.xfastest.com/thread-83980-1-1.html
Radeon HD 7850 七月份就開始有廠商推出 1GB 版
記憶體容量減半可以降低成本,但是對顯卡性能會有影響
3Dcenter 整理了 Computerbase、HT4U 以及 Techpowerup
做過的HD 7850 2GB vs.1GB 性能對比測試,來看降幅有多少
如果解析度在 1920x1080、8x AA 或更低
2GB 與 1GB 版最大差距也只有 2%,幾乎可以忽略
不過 HT4U 的測試中有一款遊戲在 1GB 版顯卡上運行失敗
解析度提到 2560x1600 之後,Computerbase 的測試顯示 4 倍反鋸齒下
2GB 版最多領先 13.3%,8 倍抗鋸齒下領先幅度提升到 30%
而三屏的 5760x1080、4x SSAA下,TPU 測試的差距達到了40%
而且有兩款遊戲是無法在 1GB 版 HD 7850 運行的
對大部分遊戲應用來說,1GB 版 HD 7850 與 2GB 版的性能幾乎沒有差異
2GB 版有明顯優勢的地方是在 2560x1600 解析度或更高、4x AA 或更高的設置下
這個時候 1GB 顯存才會成為性能瓶頸
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