Amazon.com: Intel Core i5 i5-8400 Hexa-core (6 Core) 2.8GHz。Intel i5-8400 review - the best new gaming CPU in years | PC。Intel Core i5-8400 2.8 GHz Review - A Closer Look | TechPowerUp。Intel Core i5-8400: CPU Computing & Rendering Performance。動作に問題ありません