I read some of the xmr stak topic and I saw that they got 800-1000h in their 570 4gb and 8gb cards, I wonder why I only got 600h plus, I am new to cryptonight algo, since I started mining, I only mined eth and other eth base algo.. can somebody here share some advice below is my settings in amd.txt Is there any way to increase my hashrate.. Thanks in advance to those who are willing to help.. 
Read more of this topic, then, because I just answered the same question on the previous page.
Short answer: lower the intensity to the 800 range, make sure it is an integer multiple of worksize (ie - divisible by 8 ) and double the bracketed entries that start with index for each card to run 2 threads.
EDIT - and I was responding to you that time as well?! Did you not understand what I wrote or did it not work for you or what?