hi, i have radeon xfx 7850 hd 1gb core edition, my fan is broken. i dont know the dimentions of my fan but it has 4 pin. on amazon i found only one new fan with 4 pin http://www.amazon.com/nVidia-ASUS-Sapphire-Video-mounting/dp/B00BRMFRDU/ref=sr_1_14?ie=UTF8&qid=1399460130&sr=8-14&keywords=ati+fan can anyone tell me will this fan fit for my graphic card?