The Phanteks Polar CPU coolers are made to perform with high quality materials where it matters. All Polar CPU coolers use the best sintered powder heat pipes and come with the high performing M25 fan. Each component is carefully chosen to add as much cooling performance to create CPU coolers with exceptional value.The Polar ST4 is an entry-level CPU cooler yet it comes with high-end sintered powder copper heat pipes. The 4 heat pipes directly touch the CPU heatspreader for the most cost-effective design. This makes the Polar ST4 a high performance CPU cooler with exceptional value |