Voltage regulators can run especially hot on late model VGA cards (ATI 5870 & 5850), upwards of 100-120 degrees C. Thus, Thermalright created a cooling solution to help stabilize VGA overclocking. Both of the VRM heatsinks share the same compatibility information (ATI 5870 & 5850). Although VRM-R3 is designed to take advantage of a side panel case fan, while the VRM-R4 is positioned utilize the airflow of a tower style CPU cooler (as demonstrated in the photo).

Compatible Cooler : HR-03 Rev.A / HR-03 GT / V2 / T-Rad2 / T-Rad2 GTX
Compatible VGA CARD : ATI HD 5870/5850 VGA Card
(only compatible with Stock PCB design / Reference design)

Detail Drawing

Installation

• 80mm of fin area, specially designed for the VRM of 5870/5850 VGA cards,effectively lowers the high temperature and prolongs the VGA life, providesgreater range of over-clocking performance .
• Patented High-riser punched fins, give better airflow between the fin area,superb cooling performance for both active (with fan) and passive cooling ( without fan).
• Double 6mm heatpipes, soldered tightly with fin, to ensure fastest Thermal conductivity.
• Easy Installation, “Hand Turnable” screws provided, installation can be done without any extra tools.
• No extra fans needed, can use airflow from the Tower cpu cooler when needed.
• One 80 x 15mm or 80 x 25mm fan can be installed ( need to be bought separately) .

Dimension:	L122 x W85 x H99 mm
Weight:	160g
Recommended Fan:	80 x 80 x 25mm fans & 80 x 80 x 15mm Fans
Heatpipes:	6mm heat pipe x 2 units