While Scythe doesn't overtly market its heatsinks as "silent", the company has typically produced CPU coolers which do meet the quiet esthetic. In this review Frostytech will be testing out the new Scythe Ninja 4 heatsink - a 156mm tall boxy looking thermal solution which is designed for lower noise cooling. The Scythe Ninja 4 CPU cooler weighs ~900grams and has a footprint of around 145x130mm.