Yep.
As a matter of course, I will remove the cooler on any video card I get, just to peel/scrape off that worthless thermal tape and replace it with some arctic silver thermal paste... you know, something that actually conducts heat.
If you've got the right sandpaper, it doesn't hurt to lap the heatsink either, if you've got it off anyways.
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<b>Radeon <font color=red>9500 PRO</b></font color=red> <i>(hardmodded 9500, o/c 322/322)</i>
<b>AthlonXP <font color=red>2600+</b></font color=red> <i>(o/c 2400+ w/143Mhz fsb)</i>
<b>3dMark03: <font color=red>4,055</b></font color=red>