Nvidia is pushing use of GPUs for scientific computation. Scientific applications require higher floating point precision. Nvidia Tesla Product line now supports Double Precision. GT200 FPU sucked! Currently in workloads there is 8:1 (single precision: double precision), in future this ratio will get closer to 2:1.Almost all consumer apps are single precision today.
Game physics doesn't need high precision FPU, as picture needs to look good. It might not have to be totally accurate.
Science/ Physics need to be very accurate, so higher precision FPU is required.
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