I have a couple of these 2-port SiI-3512 boards in constant use here now (yes, two ports, not three).

They're cheap (DealExtreme!), bootable, PCI, and fast enough for my needs. I forget whether they're 1.5gb/sec or 3.0gb/sec (probably the former), but only SSDs are faster than 1.5gb/sec today (and PCI slots aren't even that fast).

Highly recommended.. BUT..

Upgrade the firmware on them before using. The Silicon Image website has much better/newer firmware. Without it, these boards are rubbish.

If you need exact details/instructions on the firmware update, let me know and I'll make it easy for you.

I've also got a 4-port version of this from DealExtreme, which works fine too. After the firmware upgrade, of course.

Cheers