quoted

Does the Ethernet frame CRC (generate and verify in hardware)  make
the TX / RX  rate  a little smaller , and a longer end-to-end  delay ?

Relative to what?

Relative to the Ethernet frame without CRC appending / verifying .


In IEEE 802.3 standard, all network devices should append/verify CRC?

quoted

 Could I disable CRC appending / verifying  in the network card driver
  on all of my nodes (machines) ?

Maybe if you want switches to discard everything you send...

So, I should disable CRC appending / verifying on all kinds of network
devices in my network?
In this way I will  TX/RX packets more faster ?


--
Thomas