my 5 week docsis3.1 cable modem no good anymore?

[Oddball_One]

https://www.speedtest.net/insights/blog/are-you-gigabit-ready-17-tips-to-help/

[high_revs]

Realize that non-bus master NICs that utilize software checksumming have a rough theoretical maximum throughout of 330Mbps.

The NICS you are using for testing, are they Intel Gbe, or Realtek by chance? Realtek onboard is widely known to not be able to achieve gig throughput and only certain Intel ones can do all the work in silicon to sustain gig.

The Dell laptop is Realtek. My 4 yr old Lenovo worklaptop is Intel, which I'll use to test tonight.

I can't recall the 6 month old HP laptop at home of my 2 yr old dell 8700 desktop. will check tonight.

still strange or was it by pure luck I got the speed captured at least one time?

[high_revs]

Realize that non-bus master NICs that utilize software checksumming have a rough theoretical maximum throughout of 330Mbps.

The NICS you are using for testing, are they Intel Gbe, or Realtek by chance? Realtek onboard is widely known to not be able to achieve gig throughput and only certain Intel ones can do all the work in silicon to sustain gig.

I bought a startech.com usb based NIC... I'm getting high speeds now.

Really strange i got these speeds early unless a driver update from microsoft changed things. i downloaded the dell driver to get it back to original state, and also a realtek driver off their site. in the meantime, i guess i am getting the speeds.

sucks no easy way to switch the NIC on a laptop w/o using one of the usb ports.

[Robotron2k84]

Glad it's finally a solved issue at least. Now you know what to look for in future PC purchases.