Memory bandwidth

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
1

Hi,

It’s mentioned in the SoM manual ‘jetsonxaviersomdatasheet_v0.9.pdf’ that the LPDDR4x memory frequency is up to 2133MHz.

However, the maximum bandwidth in the spec is 137GB/s.

As it’s 256-bit(i.e. 32B), so 2.133G*32B is about 63GB/s.

They’re inconsistent. Why? Is the computation wrong?

Best Regards.

1 Like
2

Understand it. For DDR, the bandwidth is 2x.

Close.