FFT Performance

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The following figures are for single-precision complex FFT processing. Power consumptions figures are for a single CSX700 running at 0.9V and 42DegC. For 2D FFTs, timing and power consumption measurements include the corner turn. All data always starts and finishes in the off-chip DRAM. FFTs were run simultaneously on both cores of the CSX700.

A range of clock speeds are shown to allow the right balance of power dissipation and performance to be chosen.

1D FFT

 

 

2D FFT

 

 

 

1D convolution