Which RAM speed best for gaming - Intel CPU (i5 10400)

Intel 10th generation CPU RAM speed test - 2666 vs 3000 vs 3600 mhz - FPS Test. 2020. i5 10400(f) : 2666MHz CL15 vs 3000MHz CL15 vs 3600MHz CL17 Test PC details core i5 10400 Asrock Z490M Pro 4 DDR4 2666: Crucial ballistix 16GB (2x8) CL14 (15-15-15-34) DDR4 3000: Crucial ballistix rgb 16GB (2x8) CL15 (15-16-16-35) DDR4 3600: Adata D41 16GB (2x8) CL17 (17-18-18-37) Zotac Nvidia Geforce RTX 2080 super 8GB Room ambient Temp - 30 degrees vmreviews vmreview80@