FSB: DRAM = 10:9 means that your FSB is ~442 and your DRAM is at 400
That is saying that your ram is running at 400Mhz meaning 800Mhz since it is dual channel.
Most people like to get the FSB:RAM ratio to 1:1 for maximum stability. you could do that by either OCing your ram or change multipliers to get em equal. But as long as it is stable it is fine