Overclocking
For overclocking I used the overclock applet included with the Nvidia reference drivers. To access this though, you will need to hack the registry. For simplicity, I have supplied a registry file that you can download and double click on. When it asks if you're sure you want to add the information into the registry, just hit "yes." After successfully importing the file into your registry, you can access the applet by going into your advanced display properties and then selecting the Geforce2 GTS tab and selecting Additional Properties, then the Hardware Options tab.

The screenshot shown above displays the default Core Clock and Memory Clock settings on the Visiontek Geforce2 Ultra.

I was able to overclock the Visiontek Geforce2 Ultra to 315/500 and have it be stable for the 3Dmark tests. Unfortunately though, when I got to the Q3Arena testing the game froze several times so I had to reduce it down to 310/495.

For overclocking I applied just simple cooling techniques. I had two Titan Slot Coolers, one on top of the video card and one on the bottom, both facing the card sucking air off of it and out of the case.

The temperature of the card was about 110'F on the PCB of the rear of the card where the processor sits. This was with no overclocking or cooling applied directly to the card. When I applied cooling to the card I reduced it to 104'F.

When I overclocked the card, the temperature was around 130'F after a 2-hr period of continuous benchmarking with no cooling applied directly to the card. After applying cooling to the card, it was 116'F on the PCB of the rear of the card.

For taking these temperatures I used the awesome Raytek MiniTemp 4. I will have a review up on this awesome product soon.