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How CPU Features Affect CPU Performance, Part 6

Intel Core i7, clock rates.

December 8, 2009



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Java



This situation is so similar to the previous one that we could have skipped the diagram. However, there is nothing wrong with it: as SPECjvm can generate good load on processors with any number of cores, no wonder it scales well, when a CPU becomes faster.

3D games





  1.86 GHz 2.26 GHz 2.66 GHz 3.06 GHz
STALKER: Clear Sky ↑ 48 55 15% 59 7% 60 2%
Devil May Cry 4 ↑ 195 198 2% 199 0% 202 2%
Far Cry 2 ↑ 49 57 16% 62 9% 65 5%
Grand Theft Auto 4 ↑ 58 63 9% 65 3% 66 2%
Lost Planet ↑ 43 43 0% 43 0% 43 0%
Unreal Tournament 3 ↑ 129 142 10% 155 9% 165 6%
Crysis: Warhead ↑ 46 48 4% 54 13% 56 4%
World in Conflict ↑ 45 48 7% 50 4% 50 0%
Left 4 Dead ↑ 101 116 15% 142 22% 150 6%
Group Score ↑ 102 109 7% 116 6% 118 2%

Three most CPU-dependent games: Left 4 Dead*, Far Cry 2, and Unreal Tournament 3, the former breaking away from the others. We can explain why Unreal Tournament 3 is one of the leaders here with peculiarities of the test: unlike other game benchmarks, the one for UT3 does not play a recorded demo, but imitates a real game (CTF) with the only difference that all players are controlled by a computer. Potentially, it's indeed much more complex task for a processor, as controlling eight players in real time generates heavy computing load even in case of the most primitive AI (artificial intelligence). However, in general these results are bad (or good -- it depends on the angle of view): games demonstrate the lowest dependence on a CPU, being the inverted leader in our today's article.

* We've published results of Left 4 Dead in the table and on the diagram, because they were the most illustrative numbers in terms of CPU dependence. But don't forget that a given benchmark belongs to the group of optional tests, so it does not affect the overall game score.


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