In my new build I installed one ADATA premier 4GB 1333MHz DDR3 RAM but when I checked its clock in Speecy and CPU-Z it showed only 667 MHz.
What could be the reason?
AMD Phenom II X4 955 BE (supports upto 1333MHz RAM)
ASUS M5A88-M motherboard
The DRAM Frequency number as reported by CPUZ needs to be multiplied by x2 (e.g., 667*2=1333). This is due to DDR (Dual Data Rate). In simplest of explanations, the modules are running at a raw 667MHz, but due to DDR techniques, you are getting a data rate of 1333MHz.