Hey there! fairly newbie here!
I have been watching bitcoin for 1 year now but never tried to mine or anything.
2-3 days ago i came by dogecoin on 4chan and thought lets go !
My problem is that i need a new grafic card (i have GTX 560 ti) but from what i have heared are AMD cards are better for mining.
but will an AMD card work with my motherboard
also, 130-160 kh/s with my card is that an ok rate ?
best card for the buck is ATI RADEON HD7950, or in short 7950
you'll get +- 600kh out of it. it can be set anywhere from 500 to 700kh though.
another good one is the 7970. it uses more electricity and gives about 100kh more (also costs more) so its less profitable but still is.
people also buy 280X 290X and 7990. these are all more expensive and less profitable. I'd go with a 7950.
I have 2 setups. One self built rig rig with 3 cards and one lame core2duo old computer running a 7950.
check this pic for hardware (i get 1780-1820kh from the rig, and the supply is not the one from the box at the pic its actually an antec 1300W 80+ Platinum)