What type of GPU do you have?
Interested in this, mine are tri-x fans (firstD)
Those are easy. Take some floss and loop it around the fins and pop off the blades.
Put some 3-in-1 oil mixed with grease on the bearing and put it back in.
thanks, i have ordered some 3in1 oil, well let you know how it worked out in the next days
You dont have to use that oil, you can use miner oil, motor oil, vegatable oil, pretty much anything.
If you use something too thin, you will have to re oil it every few weeks / months
If you use something too thick, the fans will have a hard time spinning when cold, once the GPU warms up they should run however.
Either way, its easier to re-lube the current fans then hook up case fans because those require extra wirings.
if you know how seal after you applied the oil without leaks...the fan can go on and on and on
my fans with oil sealed inside them are still running and will be almost a year in 3 months..and they are still fine as of now.
i'm using a car aircon compressor oil..very good quality. a bit expensive for an oil but it was just an excess from the car AC repairs, so it is okay..
here's how i seal..
Unfortunately, I'll have to shut down SOMETHING to power it when I need it.
On a side note - I had quite a few of my DNet machines (the Distributed net client isn't mining as such, but puts very similar loads on a system for the same reasons) last ballpark 20 years before I finally retired most of the oldest ones when I moved this summer. The primary issue I ever had with those was FANS dying (and often causing overheat-related other dead parts), followed by motherboards dying.
you are really at the edge of your max safe power there..swamp cooler power consumption is only limited to the pump and the fans, well for my mining room i think the fan that blow air to the cards and and the exhaust fan is enough to move air around my mining room..
pumps that is 1/2 hp might be an overkill already to what i'm designing, and 1/2 hp is just ~ 400 watts. (240v here)
you might want to try my solution to my fans, this material can seal (with or without cover) where you pour the lubricant oil. my fans lasted more than half the summer here and still running 24/7
this is better compared to (3m double tape-the gray one, silicon sealant, other tapes) in sealing and work-ability of the material, purchased from an aircon/refrigeration shop. don't know the name of this, i just said the black sticky stuff..i just seen this being used by a technician for sealing holes where tubes had passes thru..these are very good at staying put and handling heat. in any case it is better to wash clean with alcohol the areas from oil and maybe a little bit of roughening the surface with a sand paper before sticking this material.
tip: use masking tape or re use the fan sticker and cover this black-sticky stuff after the work is done.
and i use this oil..
http://www.ariazone.com/product_oil_aa1.php
it is a bit expensive but this is just leftover so i'm saved from buying, there are other cheaper compressor oils out there and i believe they are better than standard motor oil.