I have another one of their cards...its actually one that is designed for Linux.
The specific card that I posted is actually designed for Windows, not linux. It is not the card that they provide for their custom Zoneminder build.
Each video port is is a WDM device.
The card is actually a Provideo card (http://www.provideo.com.tw/DVR%20Card_TW-220.htm).
I've had no issues with their other card. Although I've never used this specific card, I'm willing to take a chance...esp for $180.
Any opinion on the i3? I've heard of people doing s/w compression with Geovision cards...something like 10 analog cameras at an unspecified resolution on an old dual core core2 duo.
Sandy Bridge is a huge step up from that, but I'm hoping for somebody with experience in software compression, i3s, and analog cameras to give me their opinion.