Does the XFX 8600 GT XXX need case cooling or 3rd party cooling devices?

I was wondering, since it's factory overclocked , if it will need alternative cooling soultions because it generates more heat (80 degrees celcius on load). Should I buy a fan for my case? Or are there any cooling units for graqphics cards you would reccomend.

Thanks for any help.

What fan speed would you suggest? I would think maybe 40%-50%?kungfukid