the price difference between the 7850 and 7870 is about 100$,so overclocking the 7850 is a good dealyasamoka wroteThe 560Ti is going to be replaced in less than a month's time by the GTX660Ti, promised to be released in August.
On the other hand, AMD's midrange cards such as the 7850 and 7870 are faster than the 560Ti and draw less power (the 7870 competes with the GTX580).
The 7850 can often be overclocked from 860MHz core clock to 1200MHz, making it around as fast as a stock 7950, beating the GTX580.
and I'm not willing to wait longer for the 660Ti