I have a Hercules Prophet 4500 64MB TV-Out (AGP) card which came with a heatsink containing a ~40mm fan, powered straight from the card itself.
The card is fine but the fan has stopped working (I suppose it must have clogged up, but in any case I broke it when trying to clean it. Oops).
My first question was:
i) are VGA cooling fans absolutely necessary?
... but from what I've read on Google groups etc, the answer is yes (I read one opinion that said they're just cosmetic, but it was a lonely opinion).
So my next question is:
ii) does anyone know where I can get a replacement VGA/chipset cooler with a plug for a TWO pin connector?? All the ones I can find on coolingshop.com, overclockers etc are for the 3-4 pin auxiliary connector on the motherboard (which I'm already using for a case fan).
The whole unit including aluminium heatsink is 48mm diameter, by about 12mm deep.
I have e-mailed Hercules who seemed to suggest that they could only help if it was under warranty.