引用:
Originally posted by HigH
先前THG跟Anandtech測試的結果
nvidia的卡跑的比較快
估計一下5900xt大概就能跟9800p or xt平起平坐了吧
(是ultra shadow的功勞嗎？應該是喔)
要跑到"可玩的程度"，5600u大概是底限
要求60fps的人請買5950u
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這問題好像蠻久以前就有答案了，
http://www.gamersdepot.com/hardware...desktop/001.htm
GD: John, we've found that NVIDIA hardware seems to come to a crawl whenever Pixel Shader's are involved, namely PS 2.0..
Have you witnessed any of this while testing under the Doom3 environment?
"Yes. NV30 class hardware can run the ARB2 path that uses ARB_fragment_program, but it is very slow, which is why I have a separate NV30 back end that uses NV_fragment_program to
specify most of the operations as 12 or 16 bit instead of 32 bit."
簡單說是NV用OGL 1.4的12位元或16位元精度(FX12/FP16)的渲染來取代32位元精度(FP32)，而ATI似乎是用FP24。關於ARB2，ATI跟NV都沒用，NV30用了ARB2後，效能大概只剩一半。
另外GEFORCE3屬於DOOM3官方支持的最小硬件需求...
有人用ti4200,p4 2g+512m玩過..driver還用最高質量和銳化，32bit，1024*768垂直同步"關"，doom3的影子"關"玩過，沒敵人fps為35~60fps，射擊時為15~30，一般來說，最低流暢度差不多約30fps，不過多人玩貞數最好是在60。