There must be a mistake somewhere. 800TFLOPS / 750MHz = 1 million FLOPS / cycle. As there are 130 million gates you would need to do 1 FLOPS with 130 gates. At 6Ghz you still only have 1040gates which is not going to cut it for 32 bit math.

Edit, Ok, http://techon.nikkeibp.co.jp/article/HONSHI/20090629/172373/... has 88TFLOPS equivalent per IC which might be possible if equivalent is loosely defined. And with 9 of those you might hit 900TFLOP's equivalent.