I just went to the Altera site. The low-end Arria 10 FPGA is rated at 140 Gflops peak. There is also a SOC version which comes with a dual-core 1.2 Ghz ARM, I2C, SPI etc. hardwired. This is probably a bridge too far, but I'm thinking pcDuino meets Papilio plus a mini-supercomputer.