On a tight budget.. is the 5870 still worth considering for MP 3,1 ? I can order one £38 from this place but it's probably not going to be the original brand pictured : https://uk.webuy.com/product.php?sku=SGRAATI58701GBPCE#.VoAR4pOLSis Other cards I'm looking at are. .. GTX 570, 6950, 6870, 750Ti... I'm running Yosemite... Also can anyone please confirm this is the right cable I need ? http://www.ebay.co.uk/itm/Apple-Mac...934656?hash=item43b3d5afc0:g:0UIAAOSw~gRVp4jx I have a cable from my dead 8800GT presumably it's the same thing..