"The test results show that the Coolink GPUChilla dropped the idle temperatures by 49% and the load temperatures by an impressive 45%! Our only complaint on the Radeon HD 4850 was how hot the card ran and the Coolink GPUChilla took cooling to the next level. The 49% reduction at idle put the Radeon HD 4850 at 33C, which is better than we expected. The factory heat sink works, but it obviously leaves room for improvement..."