1 million RF/t? Yikes... What would you need that much for?
To answer your question... I guess Extra Utility's Nether star generator will work. You would need twelve running constantly, and that would take a production of twelve nether stars every ten seconds.
Otherwise, I'd say 20 big reactors, each able to produce 50k RF/t. Unfortunately, that takes a lot of resources. You can check various designs' efficiency here: http://br.sidoh.org/#reactor-prompt
Really, there's no good way to produce that much power that fast. You may have to run your ender quarry at lower speeds, or swap the fortune 3 block that I assume you are using for a silk touch block, then throw the resulting ores into a sag mill or other ore processor.
EDIT: With that link I gave you, I was able to simulate a 1 million RF/t reactor. It was 29x29x46 internal, using a checkerboard pattern of control rods and graphite in the center, going 6 blocks in each direction, and the rest filled with liquid ender. That came to a total of 50,551 charcoal, 123,648 enderpearls, 31,160 iron, 5,922 yellorium ingots, 86 redstone, and one diamond, just for the internal + the controller. It uses .179 ingots of yellorium per tick, and there's all the reactor glass and power taps and storage to worry about too. That's... very expensive.