Digit-Life decided to remove the GPU cover from one of their GeForce FX 5600 Ultra and 5900 Ultra cards. After doing this they were able to overclock the core much further than before!
The latest news from our videolab: having decided to get deeper than
usual tinkering with GeForce FX cooling systems, Alexander Vorobyev,
our video section editor, removed the GPU covers that are actually
decorative and tried to install the cooling system on the GPU core
What do we get from the experiment? A lot with an accurately reworked
cooling system for closer on-GPU installation. In the case above the
default GPU/memory clock speeds were 400/800 MHz with up to 466MHz
overclocking potential. After the redesign we were able to overclock
GPU to 500MHz!