(320 bit / 8 [bits per byte]) * 800 MHz * 2 [DDR vs SDR] = 64,000 B/s or 64 GB/s
(256 bit / 8 [bits per byte]) * 1,000 MHz * 2 [DDR vs SDR] = 64,000 B/s or 64 GB/s
Yes they are equal but actually higher. However, you still might see either bus do better in there real world. Missed...