Iria

When Crysis Warhead was first announced, the issue of optimization for lower-end systems was a critical factor in its creation. Crytek even went so far as to design a "budget" gaming machine that became a focal point for optimization. Along with making the game a little more system friendly, they also worked on improving the graphics quality to keep the CryEngine the king of visual performance. However, questions surrounding a system's ability to tame the beast still remains.
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Source: Hardware Canucks