Topic on Talk:Alien Rage - Unlimited
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I don't know. But I am inclined to doubt this.
The game is streaming a lot of data from hard drive to the GPU, I would think an SSD would be more beneficial.
You can also modify the texture groups to lodbias=0 (Some are set to 1) and add ",NumStreamedMips=0" to the end of every texture group except for shadow maps (which already has it set to 3)