We have tested the EtherCAT bandwidth on the network cards used in SBOX-es and here are the results.


LAN card No. 1: Intel 82579LM

SIRIUSr8 - SBOXre1x IOLiteR12 (12*6xSTG)1x IOLiteR12 (7*6xSTG + 8xLV + 8xLA + 2*8xSTGS)
Sample rate: 20kHz
Channel count: 162ch 
Number of devices: 23
Calculated Bandwidth: 11,33 MB/s
Result: No data lost, no retransmit @ 30min test

LAN card No. 2: Intel CT Desktop adapter #2
SIRIUSr8 - SBOXre1x IOLiteR12 (12*6xSTG)1x IOLiteR12 (7*6xSTG + 8xLV + 8xLA + 2*8xSTGS)Sample rate: 20kHz
Channel count: 162ch
Number of devices: 23
Calculated Bandwidth: 11,33 MB/s
Result: No data lost, no retransmit @ 1h30min test


LAN card No. 3: Intel CT Desktop adapter #7 (EtherCAT)
SIRIUSr8 - SBOXre1x IOLiteR12 (12*6xSTG)1x IOLiteR12 (7*6xSTG + 8xLV + 8xLA + 2*8xSTGS)Sample rate: 20kHz
Channel count: 162ch
Number of devices: 23
Calculated Bandwidth: 11,33 MB/s
Result: No data lost, no retransmit @ 10min test

It looks like a good network card can receive more than 10MB/s. You can also calculate the bandwidth with the Dewesoft calculator.