i didn't make it up, i actually build rigs from time to time.. What i have seen though is that western people usually end up buying high end psu's for cards like even the gtx 760. Its true that amd and nvidia recommend high watt psu's for their cards , but its just to be cautious..
As for the r9 270x and 7870 having completely different architecture your wrong son..
http://www.anandtech.com/show/7503/the-a...t-asus-his
I recommended the 270x only if he had a good psu.. If you dont have a good psu you can look to the 750ti which takes power from the pcie slot itself. it uses very little power and gives good perfomance..
Edit : it seems that i did make a mistake. you do require 550 watt psu for the r9 + i5.. i got the numbers mixed up..
As for the r9 270x and 7870 having completely different architecture your wrong son..
http://www.anandtech.com/show/7503/the-a...t-asus-his
I recommended the 270x only if he had a good psu.. If you dont have a good psu you can look to the 750ti which takes power from the pcie slot itself. it uses very little power and gives good perfomance..
Edit : it seems that i did make a mistake. you do require 550 watt psu for the r9 + i5.. i got the numbers mixed up..