http://www.newegg.com/Product/Product.aspx?Item=N82E16814121823&nm_mc=KNC-GoogleAdwords-PC&cm_mmc=KNC-GoogleAdwords-PC-_-pla-_-Desktop+Graphics+Cards-_-N82E16814121823&gclid=CNuk9K3IkMYCFQORfgodBo0AMg&gclsrc=aw.ds
On this page it says the R9 270 uses a DVI cable, and my monitor does have a DVI slot, sO i was using the white cable for sure.
How doe I switch the mode of my monitor? Which is the right mode for DVI?