هذه مراجعة لل Sapphire HD4770 :

https://www.pureoverclock.com/review.php?id=744&page=18







ومراجعتين لل HD4770 CrossFire :

https://www.hexus.net/content/item.p...m=18281&page=1




https://www.elitebastards.com/cms/in...1&limitstart=4