Or you can still mine Ethash at 24-26Mh/s with hd7950, just not ETH or ETC.
Try Musicoin(MUSIC), Expanse(EXP) or Ubiq(UBQ). And you can dual mine DCR if you really want to do that.

Dual mining with that GPU is never a good idea because of the huge heat it outputs. The card uses ~200Watts while undervolting, and if you dual mine it can easily consume ~250-275 Watts depending on the intensity.