Microprocessor Clock Rates


AMD Processor Clock Rates

    AMD K5 and K6 Processor Clock Rates   Includes processors designed to compete with Intel's Pentium processor line.  
    AMD K7 Athlon Processor Clock Rates   Includes the original Athlon, Thunderbird, Athlon XP, Athlon 4, Duron, Sempron, and Mobile Athlon XP processors.  
    AMD K8 Athlon64 Processor Clock Rates   The Athlon 64 X2 is up to 6400+. Includes the Mobile Athlon 64 and the Turion line.  
    AMD K8 Opteron Processor Clock Rates   Opteron 12xx, 22xx, and 82xx processors have been added.  
    AMD K10 Phenom Processor Clock Rates   New triple-core and quad-core Phenom categories have been added. The quad-core is up to 2600 MHz (9950).  

Intel Processor Clock Rates

    Older Intel Processor Clock Rates   Covers Intel processors from the 8086 to the 486 series.  
    Intel Pentium Processor Clock Rates   Includes Pentium MMX and Pentium Pro processors.  
    Intel Pentium II Processor Clock Rates   Includes Pentium II Celeron, Mobile Pentium II Celeron, and Pentium II Xeon processors.  
    Intel Pentium III Processor Clock Rates   Includes Mobile Pentium III and Pentium III Xeon processors.  
    Intel Pentium 4 Processor Clock Rates   Several additions have been made to the Pentium D, Core2 Duo Desktop, and Core2 Extreme processors. The Pentium 4 Dual-Core Desktop and Core2 Quad processor lines have been added.  
    Intel Itanium Processor Clock Rates   Updated to reflect numerous versions of the Itanium 2.  

Cyrix Processor Clock Rates

    Cyrix Processor Clock Rates   The C3 processor has been relisted in five separate categories, each with different names. It's currently up to 1 GHz.  

Related Links - Sources of Information

    AMD CPU Chart   Covers practically every AMD processor made since the original Athlon.  
    CPU Sockets Chart   This webpage contains all major socket designations, starting with Socket 1, and shows the CPUs and chipsets bound with each type.  
    CPU World: Intel Specs   This website lists all of the Intel CPU Sspec cards, categorized by processor type.  
    Intel & AMD Specifications Chart   A comprehensive list of all Intel and AMD processor specifications.  
    Processor Electrical Specifications   This webpage contains various CPU voltages and wattages from Intel, AMD, Via, and more.  
    Processor Speed Settings   This webpage contains various CPU speeds from Intel, AMD, and Cyrix. Most of them are Socket 7 and older.  
    TR's CPU Decoder Ring   Covers AMD Athlon and Athlon 64-class processors and Intel Pentium 4-class processors.  


  1. Several Intel and AMD and Intel processors are dual-core. This means they have two individual CPUs in one chip. Some are quad-core, which means they have four individual CPUs in one chip.
  2. Intel's Hyperthreading technology uses two pipelines in one CPU, which gives the operating system the appearance of two CPUs. When their first dual-core CPUs came out, Intel discontinued this technology. It has since been reincorporated. In some instances, a single quad-core CPU will appear as eight CPUs to the operating system when combined with HT technology.
  3. The AMD Opteron series processors are utilizing a new numbering scheme. The 14x series are 1-way, the 24x series are 2-way, and the 84x series are 8-way. This is illustrated respectively with their speeds listed.
  4. Several newer Intel Pentium 4 HT, Pentium 4 M, and Celeron D series processors are utilizing a new numbering scheme. The Pentium 4 D processors are deemed 8xx and 9xx, the Pentium 4 HT processors are deemed 5xx, the Pentium 4 M procesors are deemed 7xx, and the Celeron D processors are deemed 3xx.
  5. Several newer Intel Pentium 4 HT and Pentium 4 D processors have three cache levels (L1, L2, and L3).
  6. Intel's Itanium 2 processors come with many L3 cache sizes, including 1.5MB, 3MB, 4MB, 6MB, or 9MB.
  7. AMD's Hypertransport Bus technology uses a scaled multiple of a base speed of 200 MHz. Although all HT-compatible bus speeds are listed as 800 MHz or 1000 MHz, some MB manufacturers list it as 1600 MHz and 2000 MHz. This is the speed indicated here.
  8. All AMD Athlon 64 and newer CPUs include an integrated memory controller, dating back to 2004. Intel did not integrate a memory controller until their 45nm line of CPUs came out in 2007.
  9. Specified rates for the Cyrix processors, AMD's K5, AMD's Athlon MP (1500 and above), AMD's Athlon XP, and AMD's Athlon 64 are PR ratings, not true speeds. The PR rating is a comparitive speed against Intel's processors.
  10. "B" on Intel processors denotes support for a 133 MHz system bus.
  11. "E" on Intel processors denotes support for Advanced Transfer Cache and Advanced System Buffering.
  Other sources for information: Intel, AMD, Via Technologies, Price Watch, PC World Magazine, PC Magazine, Wikipedia, "Upgrading & Repairing PCs" by Que  

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