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AMD Radeon HD 6870 & HD 6850 in CrossFireX
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by Rob Williams on October 25, 2010 in AMD-Based GPU

We took a hard look last week at AMD’s Radeon HD 6870 and HD 6850, and in the end, were left impressed. The FPS/$ ratio was superb, as was the feature-set. How do things look when the same cards are tossed into a CrossFireX setup? Well, AMD claims an up to 1.99x gain in certain games, so let’s see how reliable that figure is.

Just Cause 2

Just Cause 2 might not belong to a well-established series of games, but with its launch, it looks like that might not be the case for long. The game offers not only superb graphics, but an enormous world to explore, and for people like me, a countless number of hidden items to find around it. During the game, you’ll be scaling skyscrapers, racing through jungles and fighting atop snow-drenched mountains. What’s not to like?

Just Cause 2

Manual Run-through: The level chosen here is part of the second mission in the game, “Casino Bust”. Our runthrough begins at the second-half of the level, which requires us to situate ourselves on top of a car and have our driver, Karl Blaine, speed us through part of the island to safety. This is a great mission for benchmarking as we get to see a lot of the landmass, even if some of it is at a distance.

Our two CrossFireX configurations continue to dominate here, and both have become the first to manage far more than playable framerates with top-end detail settings, AA included.

Graphics Card
Best Playable
Min FPS
Avg. FPS
AMD HD 6870 1GB (CrossFireX)
2560×1600 – Max Detail, 4xAA
49
65.53
AMD HD 6850 1GB (CrossFireX)
2560×1600 – Max Detail, 4xAA
40
55.17
AMD HD 5870 1GB (Sapphire)
2560×1600 – Max Detail, 4xAA
27
38.29
NVIDIA GTX 480 1536MB (Reference)
2560×1600 – Max Detail, SSAO Low, 0xAA
29
39.137
AMD HD 5850 1GB (ASUS)
2560×1600 – Max Detail, High Water, High Objects, 0xAA
27
38.468
AMD HD 6870 1GB (Reference)
2560×1600 – Max Detail, High Water, High Objects, 0xAA
26
40.787
NVIDIA GTX 470 1280MB (EVGA)
2560×1600 – Max Detail, Medium Shadows, Medium Water, Medium Objects, SSAO Low, 0xAA
33
37.932
AMD HD 6850 1GB (Reference)
2560×1600 – Max Detail, High Water, High Objects, High-Res Shadows Off, SSAO Off, 0xAA
31
48.391
NVIDIA GTS 450 1GB (SLI)
2560×1600 – Max Details, Medium Shadows, Medium Water, Medium Objects, High-Res Shadows Off, SSAO Off, 0xAA
39
46.988
AMD HD 5830 1GB (Reference)
2560×1600 – Max Detail, Medium Shadows, Medium Water, Medium Objects, High-Res Shadows Off, SSAO Off, 0xAA
31
38.230
AMD HD 5770 1GB (Reference)
1920×1080 – Max Detail, High Water, High Objects, SSAO Medium, 0xAA
31
42.332
NVIDIA GTX 460 1GB (EVGA)
1920×1080 – Max Detail, Medium Shadows, Medium Water, Medium Objects, High-Res Shadows Off, SSAO Low, 0xAA
43
48.724
NVIDIA GTS 450 1GB (ASUS)
1920×1080 – Max Detail, Medium Shadows, Medium Water, Medium Objects, High-Res Shadows Off, SSAO Off, 0xAA
39
45.059
AMD HD 5750 1GB (Sapphire)
1920×1080 – Max Detail, Medium Shadows, Medium Water, Medium Objects, High-Res Shadows Off, SSAO Off, 0xAA
35
43.306

Our “Best Playable” for this game tends to be around ~40 FPS, and our HD 6850 configuration managed to keep that as its minimum. Great stuff so far.


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