I have a 10Gbps internet connection. On a system with a 10Gbps Ethernet card, I can get ~8Gbps down and ~6Gbps up:

I’d expect this to easily max out a 2.5Gbps network connection. However, while the upload is maxed (or close to it), I can only ever get ~1.0 to 1.5Gbps down:

Both tests were performed on the same system. The only difference is that the first one uses a TRENDnet 10Gbps PCIe network card (which uses an Aquantia AQC107 chipset) whereas the second one uses the onboard NIC on my motherboard (Intel I225-V chipset).

This is consistent across two devices that have 10Gbps ports and two devices that have 2.5Gbps ports.

I’m using an AdTran 622v ONT provided by my internet provider, a TP-Link ER8411 router, and a MikroTik CRS312-4C+8XG-RM switch. I’m using CAT6 cabling, except for the connection between the router and the switch which uses an SFP+ DAC cable.

I haven’t been able to figure it out. The ‘slower’ speeds are still great, I just don’t understand why it can’t achieve more than 1.5Gbps down over a 2.5Gbps network connection.

Any ideas?

  • @danOPAEnglish
    1•1 year ago

    Thanks. This sounds related. Unfortunately I can’t find the firmware (NVM) update it mentions. I have an “ASUS ROG STRIX B550-F Gaming (WI-FI)” motherboard, and the latest Intel LAN driver on their site (V1.1.4.38) does not have the firmware image in the download, nor does the install.bat update it (it just removes old drivers then installs the new driver).

    Based on this thread, it sounds like this chipset has known issues: https://www.techpowerup.com/forums/threads/is-the-intel-i225-v-ethernet-chip-still-a-buggy-piece-of.303335/page-2

    • Spiritreader
      2•1 year ago

      Yes the i225 is one of the most issue ridden NICs of the decade.

      I hear nothing but problems, from instability to slow speeds to issues with WoL.

      If you go on the driver page newer versions should show up though

      https://rog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-model/helpdesk_download/

      It lists version 2.x.

      Maybe the firmware version you’re looking for is in there.

      Good luck! I hope you can get your i225 to work properly!

      Note that the wifi and non wifi version of the board should be interchangeable as the only difference is that there’s a wifi card pre-installed.