Our Axial-tech fan design has been optimised for a new, larger heatsink that features more fins and surface area than last gen. The blade count has been increased on all three fans, with 13 on the centre fan and 11 on the auxiliary fans. The barrier ring on the side fans has been slimmed down to allow for more lateral intake and to provide better airflow through the cooling array. The centre fan's extra blades and full-height ring provide boosted static pressure to blast air directly onto the GPU heat spreader.
The fans have been smartly tuned with a reversed rotation for the centre fan, which reduces turbulence, and with a fan-stop mode that kicks in when the GPU temp falls below 55 degrees.
To get heat up off the die and into the heatsink array to benefit from the new fan design requires special attention. We use a manufacturing process that polishes the surface of the heat spreader to improve smoothness at the microscopic level. The extra flatness allows for better contact with the die for improved thermal transfer.
The heat spreader draws heat up into heatpipes that carry it through a fin stack that fills a large 2.9-slot footprint. Increasing the heatsink size compared to the last generation provides more thermal headroom to account for the new high-performance chipset.