- Joined
- Oct 7, 2000
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- 63,293
I dont know the p/n on the oem ones but there are lots of fans that should be very close and then just transplant the oem jst jack. its doable.The OEM 3dfx fans with AAVID stickers are ball bearing fans, oiling them won't help because the bearings are failing. You might be able to knock out the bearings and replace them if you could find bearings that small.
Those fans are unobtanium.
While you can find 40mm fans, getting them with Mini JST headers and with the slim profile of the original AAVID brand fans is nearly impossible. The AAVID fans are 5-8mm thick and have wide and shallow mounting holes. Modern 40mm fans are going to be 10-15mm thick at minimum and have deep thin mounting holes which prevents them from mounting to the original heatsink.
When the fans on my Voodoo5 5500 failed, I had to do a lot of research and experimentation to get replacements to work. I ended up buying 3 wire fans and replacing the standard 3 pin fan connector with a 3 pin Mini JST pigtail, with I think a 2mm pin pitch. The mounting holes didn't line up so I removed the stock heatsinks and replaced them with much larger versions. The fans still don't fit quite right, but they work and the VSA-100 chips don't overheat.
Getting 3 wire fans is important because at least on my card, it won't power up unless it detects the fans are spinning.