@Poekel Isn't the 4750G monolithic? Why is the memory latency so bad? My 3500X with 3733 18-21-18-20-30 at a lower clock speed (3.95GHz) gets 69.6ns. For timings your tRC, tRRD_S, tRRD_L, tFAW (very important), tWTR_L, tWR, tRTP and tCKE look higher than usual. You can also try the SCLs, I think...