I heard that square fans are a lot more likely to fail than round ones on geforce 2s which will frie your card. They said they started putting round fans on and the problem went away. I checked my MSI Geforce2 Pro 64 DDR (831 series) which i just got today and of course it has a square one. Does anyone know how common this is?
Guess you are referring to a HSF, consisting of a square fan housing mounted on a square heatsink. Such HSFs have been around a long time and there are quiet a few to pick from. Don't believe there are as many round ones (such as the Blorb). So if this is true there would be more reported failures from the 'square type,' IMO.
I really have not experience any problems from either type although Asus boards had some failures of HSFs on the Northbridge chip (these were square, BTW). I replaced the one I had with a Blorb before experiencing any problems.
I have used the Blorb (round) and the Vantec Chipset Cooler (square) on a number of video cards and chipsets, both have performed very well.