Good morning Mruniverce and welcome to CH
It is impossible to tell you what fan would fit your video card it is made by every major video company
and each company will have different shrouds, different heat sink etc. Who made it what is the whole model number.
Plus if the fan was making noise do you mean noise like a fan is failing? the stock fan should be good enough in most cases. The fan is humming, chattering etc.
Is the PC case fans & PS (power supply) & CPU fan clean and dust free?
Hope to hear from you soon, Mike