I am also not in HFT but wouldn't be surprised if there are also some timeless parts built as ASIC--perhaps not specially targetting HFT, but useful in that are

I am also not in HFT but wouldn't be surprised if there are also some timeless parts built as ASIC--perhaps not specially targetting HFT, but useful in that area)--and then just integrated via FPGA/CPU. Google's recently announced machine learning chip coming to mind.