Definately get a replacement card or heatsink and soon!
You can damage the GPU core that way.
Easiest thing is to pop off the heatsink and replace it with something else... even use arctic silver epoxy resin to glue on something larger.
If its big enough you can run without a fan!
(my old geforce2pro had a monster socket370 cooler that could run fanless)
Only problem was it took up 2 PCI slots LOL
<b>My Car comes with Hyper Threading enabled:
1970 General Motors Holden HT Kingswood Wagon
Regards,
Mr no integrity coward.</b>