Is it bad to turn up the speed of my GPU fans?

[Spitfire7]

I have two BFG 7600GT's SLI and my temps are average of 50º C. I have a control in my desktop Bios to up the fan speed to 100%. They are currently at 60%. Will that hurt the cards or my computer in any way?

 

[prozac26]

It won't hurt it in any way.

However, the temps are fine, so to keep the PC quieter, keep the fan speed the way they are.