Features:

• Fits Reference Design ATI HD 5970 video cards
• Not compatible with :
• SAPPHIRE Toxic HD5970 4GB GDDR5 PCIE
• XFX Radeon HD 5970 4GB Black Edition Limited
• Pure Copper 110 used for the copper base
• High Flow design
• Uses stock back plate to cool backside RAM
• Easy installation with Hard Mount Stops built into the block.
• Compatible with reference 
• Crossfire Compatible and Certified!! 

 Benefits:

• Significantly reduces Load and Idle temperatures on the video card 20-30C+
• Capable of massive overclocks - card/silicon dependent
• Completely Anti-Corrosive.  No Aluminum used
• Prepped for Crossfire
• Smoked acrylic top!
• All hardware is included to mount one block to one card...including thermal pads and Ceramique thermal paste.
  

Advantages

• Includes the Danger Den warranty and support via Phone, Email, Forums, Live Chat, or Ticket system!!!
• Reduce temperature by more than 20-30+C
• Bridges to cool all components are built in!  No fumbling with bridge mounting hardware
• Allows the removal of the noisy fans on the Stock / OEM heatsink
• Uses the international standard G 1/4 BSPP Fittings
• Every block is pressure leak tested before shipment
• Use RAMsinks or backplate on the backside of the card

Options:

• Fittings sold separately

Resources:

• Block Accessories
• Instructions
• Reviews