I know some devices support the 5GHz frequency but it is usually only the high end devices such as...
HTC One X
HTC One S
HTC EVO 3G
Pretty sure the entire HTC One series supports it besides the One V, i think...
Otherwise more recent, the Note 2 and DNA are probably in the bunch.
To tell if your device supports it you can go into the Wifi Settings and under Wi-Fi Frequency Band you can choose, Auto, 5GHz only, or 2.4GHz only.