iXBT Labs posted a review on the HIS 6950/6970 Fan Turbo 2GB and HIS 6850 IceQ X Turbo 1GB Graphics Cards A quote from the article:

Today we shall review a trio from HIS based on the Radeon HD 6970, Radeon HD 6950 and Radeon HD 6850 GPUs. Some of these solutions copy reference design, but every card is nevertheless factory-overclocked and has a rather efficient cooler.

Read more