3D, Business, CPU, Graphics, Hardware

Nvidia’s discloses its DP performance limitations

When Nvidia launched GT200 chip, the company claimed around 1TFLOPS of Single-Precision computing power, and roughly 150 GFLOPS of Dual-Precision performance. This discrepancy was mostly due to the fact that Nvidia went with dedicated hardware for the DP support. Every eight-shader cluster had one dedicated dual-precision unit, costing millions of additional transistors and resulted in doubtful performance. Fast forward to January 2009, and we have SP performance at 933 GFLOPS, while achievable DP performance dipped down to 78 GFLOPS. This figure is roughly half of what Nvidia boasted about at the time of launch, and sheer evidence that both manufacturers like to overstate the performance

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