Gate for gate an FPGA consumes more power then a dedicated chip, but the power dissipation depends heavily on the programming. Careful programming can reduce power dissipation.
A potential advantage of an FPGA over a dedicated chip is that any unused functions can just be left out, saving power dissipation and logic resources. This is the (largely unrealised) promise of Reconfigurable Computing [1].
A potential advantage of an FPGA over a dedicated chip is that any unused functions can just be left out, saving power dissipation and logic resources. This is the (largely unrealised) promise of Reconfigurable Computing [1].
[1] https://en.wikipedia.org/wiki/Reconfigurable_computing