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Onboard ethernet adapter very slow compared to network card - why?

  • Ethernet Card
  • Network Card
  • Networking
Last response: in Networking
May 19, 2008 3:09:51 PM

Hi there,

I recently acquired a PC with a PC Chips M863 motherboard with an onboard ethernet adapter - a SIS 900 to be precise (10/100 Mbps). However when I connect to the internet using it it's very slow. Even accessing my router's setup ( is slow.

If I connect to the internet using my Lite-On PCI card from my old computer (which is 100 Mbps) it's fast again. But when I plug it into the onboard... slooooooow.

This wouldn't be a problem but my mobo has 2 PCI slots - one for my SATA card, one for the network card. I have recently acquired a graphics card that is so big you cannot use the PCI slot next to the AGP slot.

I need my SATA card so I am hoping to get the onboard ethernet to actually work... I've updated the drivers using the most current version from the SIS site (which I thought worked for a few joyous seconds until I realised Firefox was loading the pages from the cache! :(  )... can anybody suggest anything else?

Thanks a lot.

More about : onboard ethernet adapter slow compared network card

June 1, 2008 1:20:38 PM

either update the firmaware to the mobo, or maybe its just a crappy mobo with a slow south bridge.