by David Kanter
In a recent article, we showed how to predict the performance of AMD and Nvidia GPUs. We built a straight forward model that uses the computational capabilities of the shader array (i.e. single precision GFLOP/s) to predict 3DMark Vantage GPU performance results. To keep things simple, we left out any multi-GPU solutions and also avoided dealing with AMD’s newer Cayman architecture. Part of the motivation for leaving out AMD’s VLIW4 designs is that the performance characteristics are very different from the previous VLIW5 architecture. The model can make reasonably accurate performance predictions. We tested the model by predicting performance for several desktop GPUs and the estimates were fairly close – typically within 6%. Considering that relatively little information about a GPU is necessary, the accuracy is very good.

Full Story