Why is the Intel Pro 1000 CT so much faster than the Intel Pro 1000 PL? I am am testing 2 servers with the same cables through a Netgear 8 Port Gigabit switch. The 1000 CT is way faster for data transfer. Why is that? http://www.youtube.com/judenihalmusic

Are latest drivers and support software loaded? Are the cables tested to be matched or near matched for quality? Are the checksum offloading the same on both? Playing to the angels Les Paul (1915-2009)

jefro, i did not know what you mean and all the drivers are good, but i found out the problem. The 1000 PL was connected to a 100 MB switch instead of a 1000 MB switch, that is why it was slow. Now, which one is better? I am trying to make a good file server. Which network card is better bandwidthwise? 1000 PL or 1000 CT? http://www.youtube.com/judenihalmusic

They are both server grade. Kind of depends on how technical you wish to get with the config. I'd almost suspect they are nearly identical but you'd have to look at the intel site to be sure. On some servers if you have an build in chip it can be faster if connected to a pci-x bus but an addon card in a pci-x or above slot ought to run similar. Your settings make it work with your system. If you have ton's of cpu time left over then don't use checksum offloading on tx/rx. If you are tight on cpu then you need to offload both. Other settings tend to help sometimes, simple things like set to auto or define speed can cause issues. Playing to the angels Les Paul (1915-2009)

CT is a desktop adapter. Uses pci-e bus. PT is a server adapter. I see no PL. Also uses pci-e but can balance network processing over multiple cpu's See here: http://www.intel.com/support/networ... I did find referances to Intel Pro 1000 PL but that was in 2005/6 making that an old card. http://www.intel.com/support/networ...