The Results - Heat Measurements
I decided to monitor the heat of each card while idle and while running Quake 3 Arena over an extended period of time at each of the bus settings (133 and 100 MHz bus). The measurement was made with the infrared thermometer on the backside of the video card's graphics chip. This typically gives the best measurement. Let's take a look at the results.
For most of the cards, the change from 100 to 133 MHz bus was minimal if none at all. Obviously working temperatures went up from the temperature when idle but the bus speed had no affect on the heat level of each card. Looking at the various temperatures of the leading cards is a bit interesting. That Voodoo3 3500 is a scorcher and is bar far a the best video card to double as a heater in the winter.