Replies to post #3561 on Rambus (RMBS)

[calbiker]

LOL, I worked with dma back in the early eighties.

Ha; calbiker used it in the seventies.

I agree that much of the disk IO is through the dma channel so in the Intel case through the northbridge and in the amd case through the crossbar; let's say that cancels out.

I doesn't see it as canceling out. All A64 memory transactions must go through the processor as the crossbar is located on the processor. This makes the processor more complex. Why should video streaming data have to travel through the processor? The added complexity also presents pin limitation problems. Socket 754 processors have only one memory channel. Why?

In addition, the processor becomes rigid. The processor places limits on what type of memory can be used. That certainly isn't an advantage.