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
GOOD RAM DDR3 1330 Mhz 2x4GB Rumia • OLX.pl
Solved: Why is my new RAM running as DDR-1330 instead 1600? - Dell Community