GeForce3 dying - options?

[kevin at 216websolutions.com]

450 mhz, Panther installed.

The fan on my GeForce3 runs only intermittently, with consequent quick 
over-heating. While I consider my replacement options, which of the 
following is possible or advisable?.

1) Stick in a Twinview from a G4 tower- the archives seem to indicate 
that this is ok, despite the smaller heatsinks. Downside is that the G4 
will be out of service.
2) Run the Cube without the enclosure, and see if the temperature stays 
lower. I know that the SS says one shouldn't, and I know that some 
enclosures are designed to facilitate cooling. Is that the case with the 
Cube?
3) Run the Cube headless, with the GF3 (and AGP riser?) removed, and 
either ssh in (remote access enabled) or, optimally, use VNC or ARD (both 
are installed).