Apologies for posting on this thread that didn't see any updates in a while, just wondering if anyone managed to get 2.5G speeds on 8125 cards?
I have RTL8125 both on my unraid tower and my desktop machine (Windows 10), connected together directly using a fairly chunky 1 meter long cat6 cable and no matter what I tweak (mtu settings, parallel threads etc) I can't get past 1.32Gbits/sec on iperf3:
MTU is set to 9000 on both the server (unraid tower) and client (my desktop).
Any idea what might be wrong?
This is using Unraid Version: 6.9.0-rc2.
Thanks.
UPDATE: After updating the Windows driver for RTL8125 (using "Win10 Auto Installation Program (SId:1152921505692730722) / 10.045 / 2020/12/31" downloaded from here) AND explicitly setting the "Speed & Duplex" setting to "2.5Gbps Full Duplex" in device properties -> Advanced (updating the driver alone didn't do anything), I now get 2.5Gbps speeds on iperf:
Don't forget to reboot Windows after changing that setting, I was getting a few hundred kbits until I rebooted which was puzzling...
Hope this helps folks with the same setup as mine.