Summary: The headline says it all. Windows XP gave constant error messages. Windows 7 had delays in all phases of networking but no error messages. Replaced it with an older card from an obsolete PC and now have a fast connection.
Summary: ESXi is picky when it comes to network cards, so even though my new motherboard has a network card on it, it was necessary to get this for compatibility and virtualization. It does the job well and there's not much more you can say about a network card.
Summary: Had to get this low profile jobby to fix up an old PC. Not many choices when it comes to the low-profile stuff. here's a hint, don't buy a low-profile PC, but if you do, you may need this upgrade.
Once again, Intel proves why they're one of the top dogs
M. Davis, Amazon
25 January 2014
Summary: Works right out of the box after installing; no need to have drivers on a flash drive prior to installation on Windows 8.1. I picked this card because my on-board Killer E2100 card never quite worked without issues. Would have intermittent connection loss, and BSODs, not to mention the card required drivers which aren't included on a fresh Windows install. Don't bother with lesser known brands, go with what you know works, go with Intel.
Summary: Upgraded from the PCI version of this card (the GT) to this. Tested speeds with iperf (simultaneous bidirectional test). Speeds went from 309 - 352 Mb/s on the GT to 903 - 934 Mb/s on this. Speed test is extremely stable over 3 tests, looks like a hard limit somewhere. Though even most enthusiasts will never use them, this card comes with many enterprise-class features - some of which are accessible through its own boot ROM which will come up on boot.
Pros: True gigabit speed, no bottlenecks, Full feature set, Complete indicator LEDs, Low cost, Low profile card, comes with a low-profile bracket