I cant find a cheaper non references HD6870. The blurb.
ASUS HD6870 DirectCU boosts performance with superior metal components and all-copper cooling
915MHz Factory Overclocked edition
Super Alloy Power technology delivers 15% performance increase, 2.5 times longer lifespan and 35°C cooler operation
20%* Cooler with exclusive DirectCU thermal solution
Up to 50%* faster clock speed with exclusive Voltage Tweak