AMD Radeon HD 6870 & HD 6850 in CrossFireX

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by Rob Williams on October 25, 2010 in Graphics & Displays

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.

Colin McRae: Dirt 2

It’s not that often that faithful PC gamers get a proper racing game for their platform of choice, but Dirt 2 is one of those. While it is a “console port”, there’s virtually nothing in the game that will make that point stand out. The game as a whole takes good advantage of our PC’s hardware, and it’s as challenging as it is good-looking.

Colin McRae: Dirt 2

Manual Run-through: The race we chose to use in Dirt 2 is the first one available in the game, as it’s easily accessible and features a lot of GPU-pounding effects that the game has become known for, such as realistic dust and water effects, a large on-looking crowd of people and fine details on and off the track. Each run-through lasts the entire two laps, which comes out to about 2.5 minutes.

We’re off to a strong start, with even the CrossFireX’d HD 6850’s far surpassing the performance of NVIDIA’s high-end GeForce GTX 480. To be fair, though, this game does tend to be Radeon-sided, but even so, the differences are huge.

Graphics Card
Best Playable
Min FPS
Avg. FPS
AMD HD 6870 1GB (CrossFireX)
2560×1600 – Max Detail, 4xAA
76
96.555
AMD HD 6850 1GB (CrossFireX)
2560×1600 – Max Detail, 4xAA
69
81.853
NVIDIA GTX 480 1536MB (Reference)
2560×1600 – Max Detail, 4xAA
53
61.850
AMD HD 5870 1GB (Sapphire)
2560×1600 – Max Detail, 4xAA
52
60.85
AMD HD 6870 1GB (Reference)
2560×1600 – Max Detail, 4xAA
42
53.592
AMD HD 5850 1GB (ASUS)
2560×1600 – Max Detail, 4xAA
42
50.325
NVIDIA GTS 450 1GB (SLI)
2560×1600 – Max Detail, 4xAA
44
53.584
NVIDIA GTX 470 1280MB (EVGA)
2560×1600 – Max Detail, 4xAA
42
49.032
AMD HD 6850 1GB (Reference)
2560×1600 – Max Detail, 4xAA
39
45.135
AMD HD 5830 1GB (Reference)
2560×1600 – Max Detail, 4xAA
24
40.385
NVIDIA GTX 460 1GB (EVGA)
2560×1600 – Max Detail, 0xAA
38
44.090
AMD HD 5770 1GB (Reference)
2560×1600 – Medium Detail, 4xAA
44
58.439
AMD HD 5750 1GB (Sapphire)
2560×1600 – Medium Detail, 4xAA
39
50.327
NVIDIA GTS 450 1GB (ASUS)
2560×1600 – Medium Detail, 4xAA
35
45.422

No surprises here… maxed-out details and 4xAA are no problem for most of our single-card configurations, much less our CrossFireX ones.

Rob Williams

Rob founded Techgage in 2005 to be an ‘Advocate of the consumer’, focusing on fair reviews and keeping people apprised of news in the tech world. Catering to both enthusiasts and businesses alike; from desktop gaming to professional workstations, and all the supporting software.

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