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C6457 - Bandwidth - EMIFA - SRIO

I need to interface the DSP C6457 with an Altera FPGA (DPRAM) through a high speed data interface to transfer image data. My options are EMIFA or SRIO.

Theoretical I can expect following bandwidth:

EMIFA (64-bit, 100MHz, 2cycle latency) = 267MB/s

SRIO = 3.125Gb/s = 390MB/s

Ok those values show me that SRIO is slightly faster.

Does anybody has more reliable data?

Thanks for your help.