Do I need to upgrade my PSU?

[knockupwood]

I decided that I'm going to upgrade my 5570 graphics card to a 790x. Will my PSU be able to support it or can I just buy the card.
Edit: Sorry, I meant the R9-290x

My specs can be found here.
http://h20566.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay/?sp4ts.oid=4269972&spf_p.tpst=kbDocDisplay&spf_p.prp_kbDocDisplay=wsrp-navigationalState%3DdocId%253Demr_na-c02575956-17%257CdocLocale%253D%257CcalledBy%253D&javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken

 

[cin19]

Do you mean r9 290x ? If yes, you need upgrade the PSU too. http://www.realhardtechx.com/index_archivos/Page362.htm

 

[kgrevemberg]

what gpu is that? Do you mean r9 270x?

 

[kgrevemberg]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020