ATI重登性能王座 48管线R580完全测试
ATI最新的X1900XT与X1800XT的核心频率都为625MHz，而显存频率X1900XT要低50MHz。而核心除了诸多技术改进之外，最显著的差别就是X1900XT拥有多达48个像素渲染单元。
那么就对这两款频率相近的产品作一对比，看看ATI新一代产品的优势在哪？以下为全部测试成绩对比：
|
测试项目 |
设置 |
X1800XT |
X1900XT |
领先幅度 |
|
3DMark03 |
1024×768 |
16897 |
17435 |
3.18% |
|
1600×1200 |
11600 |
12170 |
4.91% | |
|
1600×1200 4AA8AF |
7470 |
7651 |
2.42% | |
|
1600×1200 6AA16AF |
6147 |
6194 |
0.76% | |
|
3DMark05 |
1024×768 |
9159 |
10498 |
14.62% |
|
1600×1200 |
6507 |
8536 |
31.18% | |
|
1600×1200 4AA8AF |
5634 |
7071 |
25.51% | |
|
1600×1200 6AA16AF |
5313 |
6451 |
21.42% | |
|
3DMark06 |
1024×768 总分 |
4448 |
5166 |
16.14% |
|
1024×768 SM2.0 |
1943 |
2306 |
18.68% | |
|
1024×768 SM3.0 |
2140 |
2719 |
27.06% | |
|
1280×1024 总分 |
3786 |
4628 |
22.24% | |
|
1280×1024 SM2.0 |
1615 |
2062 |
27.68% | |
|
1280×1024 SM3.0 |
1689 |
2148 |
27.18% | |
|
1600×1200 总分 |
3238 |
4143 |
27.95% | |
|
1600×1200 SM2.0 |
1371 |
1837 |
33.99% | |
|
1600×1200 SM3.0 |
1343 |
1866 |
38.94% | |
|
1600×1200 4AA8AF总分 |
2498 |
3276 |
30.78% | |
|
1600×1200 SM2.0 4AA8AF |
1039 |
1448 |
39.46% | |
|
1600×1200 SM3.0 4AA8AF |
949 |
1305 |
37.51% | |
|
DOOM3 |
1280×1024 |
106.8 |
111.6 |
4.49% |
|
1600×1200 |
84.3 |
92.4 |
9.61% | |
|
1600×1200 4AA |
62.53 |
71.7 |
14.66% | |
|
Quake4 |
1280×1024 |
92.9 |
94.1 |
1.29% |
|
1600×1200 |
82.1 |
84.7 |
3.17% | |
|
1600×1200 4AA |
67.1 |
69.3 |
3.28% | |
|
Half-Life2 |
1280×1024 |
138.72 |
140.73 |
1.45% |
|
1600×1200 |
127.93 |
138.25 |
8.07% | |
|
1600×1200 4AA16AF |
117.44 |
133.9 |
14.02% | |
|
FarCry |
1280×1024 |
106.16 |
118.75 |
11.86% |
|
1600×1200 |
102.67 |
112.21 |
9.29% | |
|
1600×1200 4AA4AF |
80.94 |
92.16 |
13.86% | |
|
1280×1024 HDR 2AA16AF |
43.64 |
55.66 |
27.54% | |
|
1600×1200 HDR 2AA16AF |
29.05 |
55.52 |
91.12% | |
|
Splinter Cell 3 |
1280×1024 |
85.71 |
98.74 |
14.89% |
|
1600×1200 |
65.95 |
77.41 |
17.38% | |
|
1600×1200 4AA8AF |
52.53 |
58.22 |
10.83% | |
|
1280×1024 HDR |
64.56 |
76.63 |
18.70% | |
|
1600×1200 HDR |
48.04 |
58.37 |
21.50% | |
|
1600×1200 HDR16AF |
40.19 |
57.42 |
42.87% | |
|
Call of Duty 2 |
1280×1024 |
45 |
61 |
35.56% |
|
1600×1200 |
35 |
47 |
34.29% | |
|
1600×1200 4AA |
31 |
40 |
29.01% | |
|
Need for Speed 9 |
1280×1024 |
50 |
62 |
24.00% |
|
1600×1200 |
36 |
52 |
44.44% | |
|
1600×1200 AA |
30 |
41 |
36.67% | |
|
Age of Empires 3 |
1280×1024 |
46 |
55 |
19.57% |
|
1600×1200 |
35 |
51 |
45.71% | |
|
1280×1024 HDR |
22 |
40 |
81.82% | |
|
1600×1200 HDR |
16 |
31 |
93.75% |
两款OpenGL游戏也几乎没有提升，两款较早的经典DX9游戏：Half-Life2和FarCry在低分辨率下提高幅度较小，而在高分辨率尤其是开AA/AF的情况下，48像素渲染单元才能发挥出优势来。
较新的几款游戏，运行时FPS普遍较低，此时X1900XT依靠强大的渲染能力领先幅度较大，普遍都在30%以上。
最能发挥48像素渲染实力的就是在ATI的专长——HDR+AA模式或者高分辨率HDR模式下，性能提升幅度可达80%-90%以上，至少也有50%左右！
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