generate traffic at wire speed

I have x86 based machine with Intel Core2 CPU 6300 1.86GHz and 2G of memory. I'm looking for options to generate traffic on the machine at line rate, or as close as possible.

OS is Fedora 20 with with stock kernel 3.17.4-200.

For network cards I have a few choices:

Broadcom NetXtreme BCM5754 1Gb PCIe

For traffic generation I found a few tools:

- netperf
- iperf
- PF_RING (looks like it's quite new and will require to load a new
kernel module)

I would appreciate if someone could share his/her experience and would recommend which tool fits better to generate a traffic at wire speed.

Thanks.