Wrong RAM frequency?

By bisugzzz
Oct 12, 2009
  1. i have a p5nsli motherboard that supports a 667 frequency of ram but why is my cpu_z tells this:

    a 333 mhz dram frequency

  2. raybay

    raybay TS Evangelist Posts: 7,241   +9

    Is it dual channel DDR2 PC667?
  3. Ritwik7

    Ritwik7 TechSpot Chancellor Posts: 1,672   +9

    What memory do you have? Could you post a screenshot of CPU-Z.

    DDR2 employs an I/O buffer between the memory and the data bus so that the data bus can be run at twice the speed of the memory clock.
  4. MetalX

    MetalX TechSpot Chancellor Posts: 1,388

    DDR RAM has a data rate which is twice the actual clock speed of the ram. So the ram runs at a clock speed of 333.33 MHz, which translates to a data rate of 666.66 MHz (2 x 333.33), which is rounded up to 667 MHz because of controversy with the number 666.

    In short, your RAM is running at the speed it should be. The motherboard is talking about the data rate of the RAM, but CPU-Z always shows the clock speed.
  5. bisugzzz

    bisugzzz TS Rookie Topic Starter

    thanks for the help..
Topic Status:
Not open for further replies.

Similar Topics

Add New Comment

You need to be a member to leave a comment. Join thousands of tech enthusiasts and participate.
TechSpot Account You may also...