Introduction

When we reviewed Radeon HD 4870 and HD 4890, both of them run especially hot on those voltage regulators. When cooled by the stock cooler, the temperature of VRM part can achieve 110℃! Thus, a set of VRM solution is needed badly. 

The power chip on Radeon HD 4890

Thermalright has seen its chance and launched the VRM-R1 and VRM-R2 to solve this problem. And Expreview is fortunate enough to get them on hand for further research.

Thermalright VRM-R2 and VRM-R1

VRM-R1 & VRM-R2

VRM-R1 and VRM-R2 feature cooling fins and copper base (nickel plated) which are connected by two heatpipes. They’re essentially similar in size and shape of the components, except for that the two differ in the positioning of the aluminum fin block. For VRM-R1, the block propagates perpendicular to the plane of the motherboard, while that of the VRM-R2 propagates parallel to the plane.

VRM-R1 is ideal for those who have the side panel fan, as the fins can take full advantage of airflow generated by the fan to improve cooling efficiency. Of course you may install another 80mm or 70mm fan to strengthen the cooling ability, especially for the surrounding components on the motherboard.

VRM-R2 is the preferred choice for those who have the CPU tower cooler, and you may also add another fan for better cooling performance.

Made of aluminum material, the base of R1 and R2 measures 95x53x9mm, and the cooling fin coverage is 78x78x19mm. Each heatsink fin is soldered to the heatpipes for a definite contact in producing high efficiency rate of heat transfer. 

Thermalright VRM-R1

Thermalright VRM-R2

VRM-R1 and VRM-R2 come with 25 pieces of cooling fins, and the heatsink coverage is about 700cm².

The height of base is only 9mm, so they’re compatible with most VGA coolers. You’ll need to apply a thermal pad to the VRM heatsink to make effective contact with VT1165SF/VT1195SF/VT238AWF/VT242WF chips.

In addition to the heatsink itself, the accessories also include necessary brackets and two thermal pads.

Pages: 1 2