I am mining on my PC with a gtx 1060 which does about 550h/s overclocked. CPU's do not output that much hashpower for example my AMD FX 8350 (8x4,2 gHz) only puts out about 220h/s.

Tha hashingpower is mostly depending on how good your hardware is. Settings in software won't give you that much more. With cryptonight algorithm the memoryfrequency is the most important - the higher it goes the more hashes you get