Why Task Manager shows 1333 Mhz and not 2666 Mhz despite adding 2*2GB 1333 Mhz (DDR3 KIT) and CPU-Z shows Dual Channel & DRAM Frequency at 665 Mhz? - Quora
FIX - Ram Running at 2133 Mhz Instead of 3200 Mhz - YouTube
2133 vs 2666 vs 3200 vs 3600 | RAM speed test (AMD) - YouTube
Corsair pushes speed envelope with 2,333MHz Dominator GTX RAM modules