If you intend to use the CPU without using GPU. You can try mining ETN or XMR. But my advice is better you don't mining without using GPU. Because it will have a small profit, not even profit. Moreover, hardware damaged due to excessive heat and waste of electricity. But if only to know the process of mining, that's something good.
thank you both,
the problem is not which currency to mining, but which miner to be able to run on my configuration,I find miner that can work only with sha256 and scrypt(but I find myself competing with the GPU, so not profitable) and no miner working for power pc with algorithms for only cpu(coin) :-(
I hope it was clear.
Thanks
Daniel