The cheapest fanless CPU cooler just got cheaper. Arctic's anodized aluminum heat sink is now available for only $10.99. Don't get us wrong, we love it and gladly recommend it for most 35W processors in a convection-friendly case, but keep your expectations realistic. The Alpine 12 Passive is an entry-level product mostly designed for office and HTPC purposes. Don't mount it on your i9-9900K.