There are a few things to consider:
- SATA III 6GPS (just move the slider to 1)
- Onboard USB3 header (just check yes)
- Onboard sound. Do a few minutes of research on this. A few of the higher end mobos have the ALC 1150 chip which is darn near as good as a discreet sound card. You might be satisfied with the regular old ALC 892.
- Overclocking capability. Some of these boards have beefier heatsinks on the VRM. Overall the phase cound doesn't matter as much since these are low power draw chips though, but more is better.
- Size ATX or uATX
- $$$ Even though most of these boards are $50-$75, some are as much as $125 which is pretty ridiculous for this platform.