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In Game Benchmarking:
Call of Duty 4:
In order to test in game, I am going to use one of my favorite games
of the last year, Call of Duty 4. I will test using the "Shock
and Awe" mission from the single player campaign, since it probably
the easiest to reproduce. All our settings are maxed out
unless otherwise stated.

In our first test, we ran at 1280x1024 with no AA. The GTX
averaged 123FPS, while the 4870GTX averaged 136FPS.

Next, we applied 4x anti-aliasing and re-ran the same test.
The 4870X2 averaged 119FPS, and the 280 averaged 102 in this test.

Now we test at 1680x1050, no AA. The X2 still averages 124FPS, and
the 280 weighs in at 115. The frame rate for the X2 seems to be
much more stable than the 280, with much fewer overall peaks and
valleys. This is a very good thing.

With 4xAA enabled, the 4870X2 hits 106FPS, while the 280 averages
89FPS. There is a curious drop in frame rates on the 4870 that
lasts a few seconds.

At 1920x1200, we see a similar dip at around the same time for the
X2. The average FPS for the X2 is 116, compared to 104 for the
280.

Adding 4xAA at 1920x1200 seems to only widen the gap for the 4870X2.
Here is another strange spike, this time up higher. The
average frame rate for the 4870X2 here is 96, while the 280 hangs out
at 77.

Since the 4870X2 was able to handle the entire CoD4 suite pretty
well, I decided to force 16xAA in the control panel to see how it
fared. It bottomed out at a minimum frame rate of 33, a max of
104, and an overall average of 64FPS. Not too shabby.
I think it is safe to say that the 4870X2 owns the 280 in Call of
Duty 4, with gains up to 20% in some tests, especially with AA
applied.
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