10 gigabit cx4 adaptor recommendations

Hello guys.

I've had a bit of a search around, but thought it couldn't hurt to ask if anybody here has any recommendations for a decent 10 gigabit network adaptor for use with ubuntu server 10.04.

Have been looking at one of the intel Dual port CX4 PCIe cards, which I'm sure the driver can be compiled by hand, but has anybody tried this?

http://www.intel.com/Assets/PDF/prod...duct-brief.pdf

Thanks in advance.

it must be lonely out there on the bleeding edge.

share you experiences as I am curious about:

- linux side hardware.
- what hardware are you connecting to as well as transport media and distance.
- what throughput you see under ideal test conditions.