I hacked mine this way:

Click me

I used an very common set of fans usually found on those custom HDD coolers and front plates with fans. They are both connected onto one power molex.
I used a few screws to hold them in place. First i slightly bended the metal heat sink so i can fit one of these Click me in two corners of each heat sink. Than i used long laptop screws to hold the coolers onto them.

They emit almost no noise at all and they are perfectly balanced. Voodoo is cool as it is. I didn't add 4 screws per heat sink because i was afraid the paste that holds the heat sinks to the chip would loosen.

The Scythe Mini-Kaze is very quiet even at full swing (3500rpm).

I wanted also to use such a cooler, but the price of 5 euro + shipping was insane for me.
For that price i could have gotten Sanyo coolers.

This fan looks like a perfect replacement for those 40mm socket 7 coolers. Thanks 😀

TELVM wrote:

The Scythe Mini-Kaze is very quiet even at full swing (3500rpm).

And it's actually almost USELESS on a voodoo5. I've had one in the past and I am a big fan of these 40x40mm fans but the v5 needs more than what they can deliver. It just gets too hot after a while, certainly way hotter than the original fans.
I've also tried them with my p200mmx , didn't like them there either, same problem, not enough airflow.
But they work wonders with a riva128 (once you put a small hs on it) or for cooling a picoPSU, or a 68060 cpu, or for ventilation on mITX systems etc ...

bjt wrote:

I've had a Voodoo 5 laying around for a while, was planning to put it in an Athlon build. This one has seen better days though.. […]
Show full quote

I've had a Voodoo 5 laying around for a while, was planning to put it in an Athlon build. This one has seen better days though...

Does anyone have a good source for 40mm fans with the 3-pin mini connector?

Aren't they the same AAVID fans that are used on Pentium Pro's? I always thought they looked very similar.

keropi wrote:

And it's actually almost USELESS on a voodoo5. I've had one in the past and I am a big fan of these 40x40mm fans but the v5 needs more than what they can deliver. It just gets too hot after a while, certainly way hotter than the original fans ...

Never fiddled with a Voodoo 5. I seldom use small fans for they are hopeless and don't move any air, but OP asked for 40mm.

Whenever any GPU insists on misbehaving and gets hot headed I quickly discipline her with large caliber weaponry 🤣 .

This solution looks like enough cooling for a V5 😎 :

http://www.iopanel.net/forum/thread12920.html

found an old pic of the monstrosity I had:

ugly but provided more than enough cooling, better safe than sorry 😉

I would just pop the old coolers off and clean up the old thermal epoxy then upgrade to something better anyway. Look for two universal chipset coolers and use molex adapters for power. The stock coolers were never really enough for this card and people knew it back then and the same still applies now. Also using vram coolers on the back of the gpu does a Lot of good especially on the main gpu.

keropi wrote:

... the monstrosity I had ...

^ That's the spirit! 😁

I'll just drop these pics here again so you guys have something to laugh at 🤣

http://imageshack.com/a/img199/6934/otd9.jpg
http://imageshack.com/a/img196/6150/ax5x.jpg
http://imageshack.com/a/img850/2049/iy73.jpg

🤣 🤣 🤣 Love it! Voodoo Steampunk!

I think keropi's solution has been shown before and it is probably the best one. The Voodoo 5 can get very hot and a bigger fan covering both (tiny) heatsinks is a good solution.
Careful not to put too much wait on the chips as they can just pop off gradually and then you'll have a DEAD Voodoo 5.

The only thing that I didn't like about the project was having to mod the blocks slightly by using a drill but everything went smoothly. It is not worth going big block as the overall tdp for each gpu is rather small and not much more than a Riva TNT or Geforce256. I thought about using thermocouples (65-90w) to help bring the temps yet lower but really wished that they had moved on to doing flip chip designs that had been around since 97/98 that would have been very easy to cool.

http://www.youtube.com/watch?v=SZj6F8wGyV4

F2bnp wrote:

[...]
Careful not to put too much wait on the chips as they can just pop off gradually and then you'll have a DEAD Voodoo 5.

has this happened to someone? 😲

They say here that the V5 5500 TDP is 30W. That's less than a PII Klamath gentlemen, piece of cake to keep at bay. Just kick away those toy OEM sinks and fans and fit something real, a well sized monolithic heatsink covering both chips (like a Slot-1 CPU heatsink) would be ideal.

Couple more questions... What's the best way to remove the heatsinks? And how can the new heatsink/fan be secured to the card?

It's been done before

See here:
http://www.falconfly.de/cgi-bin/yabb2/YaBB.pl?num=1231551864

keropi wrote:

F2bnp wrote:

[...]
Careful not to put too much wait on the chips as they can just pop off gradually and then you'll have a DEAD Voodoo 5.

has this happened to someone? 😲

Yes. Gotta love how I wrote wait instead of weight. What a stupid mistake 😜.
But even so, my sentence doesn't make too much sense, pop off isn't the proper phrase as it refers to something instantaneous and "aggressive" in a sense. Let me elaborate.

If you put a large heatsink on the chips, because of the applied force, the chips will be gradually getting pulled downwards. This will not make the chips come off the PCB and fall on the base of your PC case, but they will kill the card.
Hope that made things a bit clearer 😜