DiRT 4 review: benchmarks with 19 graphics cards

Codemasters' latest racing game tested

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Influence of CPU

In order to test how the game handles slower processors we turned off a certain amount of cores of the processor and/or HyperThreading in order to simulate a ‘Core i3’, ‘Core i5’ and ‘Core i7’ from the mid-range series. The divide of cores and threads is respectively 2C/4T, 4C/4T and 4C/8T. The clock speed did stay the same at 4 GHz. These tests were all performed using the fastest GPU available, namely the Nvidia GeForce GTX 1080 Ti.

Racing games are usually not very CPU-intensive and a quad core only shows its value at Full HD and WQHD with medium settings. At more demanding settings, namely WQHD and 4K ultra we see that a CPU with more than four cores has an added value. However, the differences are relatively small.

framerate in fps 2C/4T 4C/4T 4C/8T 8C/16T 'i3' vs 'i5' 'i5' vs 'i7' 4C vs 8C
Full HD medium 252 288,3 282,2 290,7 14% -2% 3%
Full HD ultra 146,9 145,8 139,6 139 -1% -4% 0%
WQHD medium 254,4 274,5 262,6 278,1 8% -4% 6%
WQHD ultra 109,1 109 108,3 116 0% -1% 7%
Ultra HD medium 164,2 164,8 166,9 167,7 0% 1% 0%
Ultra HD ultra 65,5 65,1 64,2 67,2 -1% -1% 5%

In the frametimes we see a small gain of the quadcore in comparison with the dualcore at Full HD and WQHD medium, but the 8-core does not offer extra performance here.

frametime in ms 2C/4T 4C/4T 4C/8T 8C/16T 'i3' vs 'i5' 'i5' vs 'i7' 4C vs 8C
Full HD medium 5,6 4,6 4,7 4,8 18% -2% -2%
Full HD ultra 10,7 11,1 11,2 11,5 -4% -1% -3%
WQHD medium 5,5 5 5,4 5,1 9% -8% 6%
WQHD ultra 13 13,1 13,3 13,4 -1% -2% -1%
Ultra HD medium 7,8 7,5 7,4 8,2 4% 1% -11%
Ultra HD ultra 18,6 19 19,6 19,4 -2% -3% 1%

Product discussed in this review

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DiRT 4 (PC)

PC, Race

Specifications

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