What size vga fan is needed for replacment?
I have a Amd Radeon HD 6500 Series. The card works fine however the fan stopped working. I have looked all over and even contacted the maker and I can not find out anywhere what size fan is needed for replacement. I do not have the fan it self, so I can't go by that. I'm not sure how to measure where the fan was. If the fan size goes by the distance from each screw mount? It is a 3 screw mount fan. Or does it go by the diameter if the fan from center to the end of the blade? At this time my only option is to replace the fan, can't afford a new card.
All you need is airflow. Find a PC fan, like a 80mm or smaller & mount it to the top of the cooler heat sink. Do this by finding screws (small sheet metal ones are good) that will go through the holes of the fan & catch the fins of the heat sink. In other words, you're lining the fan up so it fits over the main cooling fins more than the solid block part. Then the screws should not break the fins but have enough drag to hold the fan down on top. Make sure it all fits in the case right & wire the fan or plug it in to a spare plug. The size of the fan can be slightly or hugely larger than the original one. It depends on room inside & effectively, I would say no larger than 80mm in your case. A cpu fan, exhaust fan, any PC fan will do for the most part. Fans spin counter clockwise when properly wired so you want the blades facing up from the heat sink, regardless of the way the card mounts. I just modified an R7240 to fit a Dell & had to take the stock fan & plastic housing off to do the same thing. When you're done run the AMD software to check the temp. If you're running up to 80c in full game, you're fine! I get 30c using an old CPU fan. You can use zip ties instead of screws if you can go around the whole card through the fan holes. Whatever mounts the fan, except glue. The fan simply needs to be wired, not to the card per se. The temp is your only concern, looks don't count, fan speed will be 100% when wired to 12v. You can wire it to the 5v to get 50% fan but not recommended. Any other questions, just reply.