No ideas tbh. https://www.youtube.com/watch?v=UnWMlcB3nTg he did something. Usually what I did was: when mounting the block just applying some pressure on the backplate. Those hydro coolers are performing much better wattage wise eg 150W 1155 vs 150W on LGA2011. I never felt any heat coming from the rad with lga1155 SB no matter which clock, till I upgraded to S2011 and the difference was clearly noticeable. The block did never feel warm on 1155.