Psu antec 500watt for gtx 560ti

hi guys i have buyed i5 2500k,intel dh67cl,4gb ddr3 ram,500gb hd sata,hp dvd-rw and cooler master eilte 370 case currently i am using my pc on standard psu which comes with cm psu that is 420w of brand thermal master...now i want to buy psu and remove this stock psu which even has no pci connector so i am buying this psu


http://store.antec.com/Product/power_supply-earthwatts/...


i have a question that this psu is same as above

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

and will it be good for gpu like gtx 560ti?
actually i am not buying gtx 560ti right now currently i am buying a low end gpu for just run my games on medium setings but i want to buy gpu now and when at a time of buying gtx 560ti i just have wo buy gpu then and no need for changing gpu then.