http://wccftech.com/nvidia-geforce-gtx- ... gpu-specs/
so with mass market hardware, $200 approx gets you a card with 4tflops (4billion transistors), but thats 120watts .. not suitable for drones and so on
the 1024 core epiphany is at ~4billion transistors, that would also be 4tflops? (1024x2x2ghz perhaps) .. but I imagine consuming much less power for a problem that fits on chip
with sufficient volume, should it have been possible to get a 'parallela 2' into that sort of price range .. the ultimate device for drones etc