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
CPU-Z reports that a DDR3 1333 Memory is capable of going upto 667Mhz! | Tom's Hardware Forum
motherboard - Why is my memory running at 665Mhz when the BIOS is clearly set to be higher? - Super User
Corsair PC3-12800 2 GB DIMM 1600 MHz DDR3 SDRAM Memory (CML4GX3M2A1600C9) for sale online | eBay
665 MHz DDR3 4 GB RAM Kötü mü ? | Technopat Sosyal
Windows 7 Pro 64 bit HP Compaq 6200 Pro MT Intel Core i7 3.40GHz 8GB RAM 250GB | eBay
What does 16gb ram dual channel 665mhz 9-9-9-24 mean? - CPUs, Motherboards, and Memory - Linus Tech Tips