Posted on 2006-04-26
Last Modified: 2010-04-25
At my job I have 2 CPU's. How can I tell which CPU is better and faster?
Question by:mlb4653
    LVL 69

    Accepted Solution

    It would help if you posted what they were.  If they are both made by the same manufacturer and are targeted towards the same market (server, desktop, or laptop), the clock speed of the cpu is one indication.  You also need to know if it has one core or two, and the size of the cache will help.  When comparing Intel to AMD, you have to use AMD's equivalent speed rating, not the actual clock speed.  Intel Pentium-M cpus, which are used in laptops, are faster than the same speed Pentium-4 desktop cpus.  Intel cpus with faster Front Side Bus will be faster than those running at the same clock speed on a slower bus.

    The other alternative is to run a benchmark program on both.  SuperPi Mod or 3DMark05 or Sisoft Sandra are good cpu benchmark programs.  This is a better real-world comparison of different cpus and you can find articles with benchmarks on sites like,, and
    LVL 26

    Expert Comment

    It would also help if you mentioned better at faster ~ at what?

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