Galaxy Readies Single-Slot GeForce GTX 670@ 2012/05/07
The extra length of the card is productively used to position a lateral-flow fan. Since there is no PCB, the fan compartment is more roomy, which could mean a bigger fan, with the possibility of intakes on the reverse side of the card. This could result is a slower, quieter cooler. The fan guides air through an aluminum channel stack, with some of the channels being made of copper. It's likely that Galaxy is using a vapor-chamber plate to transfer heat from key components over to the air channels. The portion of the heatsink over the VRM MOSFETs has cylindrical structures, which reminds us of Radeon HD 4850 VRM area.