Original Intel Core i5-7500 Cooling Fan Heatsink for Desktop PC Socket LGA1151 | eBay
i5-8400 i5-8400T Cooling Fan Heatsink for Intel 8th Gen CPU Socket LGA1151 - New | eBay
i5 7600k OC @5,04GHz (BCLK 105, multi 48x, voltage 1,38). Temps in check with a corsair AIO 240mm cooler. Nice single core score for a 4 years old cpu. : r/overclocking