Features:

• Fits Reference Design ATI 4870 video cards
• Compatible:
• *4890* DIAMOND 4890PE51GXOC - Newegg
  
• Not Compatible:
• ASUS Radeon HD 4870 EAH4870/HTDI/512M
• ASUS EAH4870 DK/HTDI/1GD5 Radeon HD 4870 Dark Knight 1GB
• SAPPHIRE 100259-1GL Radeon HD 4870 1GB 256-bit GDDR5
• SAPPHIRE HD 4870 1GB TOXIC Edition 
• SAPPHIRE 4870 Vapor-X - Part# 100267L
• Pure Copper 110 used for the copper base
• High Flow design
• 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

Options:

• Fitting Size

Resources:

• Block Accessories
• Instructions
• Reviews