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Colin McRae Dirt 2

Dirt 2 benchmarks - DX 9 vs. DX 11 - Update: Radeon HD 5970 results

Following the visual comparison between the DirectX 9 and DirectX 11 mode of Colin McRae: Dirt 2, PC Games Hardware now takes a look at the differences in performance of the two rendering paths.
Colin McRae Dirt 2
Original article: November 24, 2009
The PC version of Colin McRae: Dirt 2 has been delayed by Codemasters so that the developers could integrate support for DirectX 11. Microsoft's new API delivers several new features some of which are used in the racing game. Yesterday PC Games Hardware already demonstrated the visual differences between DirectX 9 and DirectX 11 in Dirt 2 and now we are going to check how the performance of graphics cards is affected.

Colin McRae: Dirt 2 - Graphics card benchmarks
Fortunately Dirt 2 has an integrated benchmark that delivers a workload quite similar to the actual game. With a Subaru we race against seven other cars (with active A.I.) on a track in London. Of course on this track you also get flying flags, an audience and water as well as the DirectX 11 Post Effects. We record the framerate for 60 seconds with the tool Fraps. The differences in the results of our three runs are minimal.

The comparison between DirectX 9 and DirectX 11 reveals that all HD 5000 cards run up to 50 percent faster if the DirectX 9 rendering path is used. With this DirectX mode the Radeons place themselves on ranking positions which they are expected to take: The two Radeon HD 5800s are leading followed by the Geforce GTX 285 and Geforce GTX 275. Running DirectX 9 the Radoen HD 5770 is as fast as a HD 4870 or a HD 5870 running DirectX 11. As it has been the case in Race Driver Grid, Dirt 2 is playable absolutely smoothly only at a frame rate higher than 40 fps - with a Geforce 8800 GT for example running Dirt 2 at 1680 x 1050 with anti-aliasing and anisotropic filtering isn't much fun.

SLI and Crossfire are not working correctly up to now, but AMD is already working on a appropriate driver - and Nvidia is most likely doing the same.

In the benchmark chart below we attached (DX9) and (DX11) tags to the graphics cards' names to distinguish between the results for the two modes.

Update: November 30, 2009
AMD's new Hotfix Catalyst v8.673.1 delivers Crossfire support. We check that with a Radeon HD 5970 and can confirm the effect: With this new driver under DirectX 9 the HD 5970 reaches up to 58 percent higher results as the Radeon HD 5870. But the micro stuttering of the dual GPU card is strong and 50 frames per second on the 5970 feel about as fast as 30 fps on the 5870. If running in DirectX 11 mode the AFR (Alternate Frame Rendering) apparently is not optimal yet because here the difference between HD 5970 and HD 5870 is only 30 percent.

By the way: SLI is still not working, even with the Geforce 195.62 WHQL, although the new driver fixes the game crashes originating with the 195.55.

Picture gallery  (enlarge to view source)

Author: Marc Sauter (Nov 30, 2009)


Comments (16)

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Starlyjff Re: Dirt 2 benchmarks - DX 9 vs. DX 11 - Update: Radeon HD 5970 results
Junior Member
17.12.2009 07:25
Colin McRae Dirt 2: DirectX 9 vs. DirectX 11. In a direct comparison the differences on the audience only become noticeable if you get close and pay attention -.

For benchmarks showing the difference in performance between DirectX 9 and DirectX 11 please refer to our Dirt 2 benchmark article..

Just wait the game hits out, many sites will then offer real comparison between dx9, dx10 and dx11. Until then this is only Codemasters propaganda strategy.
saib1 Re: Dirt 2 benchmarks - DX 9 vs. DX 11 - Update: Radeon HD 5970 results
Junior Member
15.12.2009 17:42
plzzzz help me guys...!!

my system specifications are-
1. AMD Phenom 2 x2 550 3.10 Ghz processor
2. 4GB (2X 2GB) 800 Mhz DDR2 RAM
3. MSI Radeon HD 4890 1 GB Overclock Edition
4. Windows 7 build 7100 32-bit OS

the FPS (Frame per second) on my PC is in between 40 to 75.. & its has not even touched to 35 also during 7 to 8 races which i had played already in the career... & my problem is that the FPS is fluctuating really very badly withing 3 to 4 seconds during the gameplay or in other word.. while racing in the game.. i have already applied & installed "DIRT 2 FIX" from AMD support but the problem of the fluctuations is same becoz of which the gameplay is not at all smooth & also making me little bit annoyed also.. i run it at 1280x1024 resolution at ultra high settings, 8x MSAA with vsync Off.. to check this fluctuation problem.. i have also changed my settings to 640x480 @ ultra low settings.. but the problem is same.. so i just want to ask whether any of you also facing the same problem as mine... & is there any solution to fix it...??? plzzz help me..!!! & srry if there anything in my english...!!
RandoIq1 Re: Dirt 2 benchmarks - DX 9 vs. DX 11 - Update: Radeon HD 5970 results
Junior Member
02.12.2009 11:58
Hi... but ati Hd 4870x2 worcks correctly... Can u post 4870x2 benches too? PLS im that card owner and wanna see how bad or good that performs

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