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- Megahertz_myth abstract "The megahertz myth, or less commonly the gigahertz myth, refers to the misconception of only using clock rate (for example measured in megahertz or gigahertz) to compare the performance of different microprocessors. While clock rates are a valid way of comparing the performance of different speeds of the same model and type of processor, other factors such as pipeline depth and instruction sets can greatly affect the performance when considering different processors. For example, one processor may take two clock cycles to add two numbers and another clock cycle to multiply by a third number, whereas another processor may do the same calculation in two clock cycles. Comparisons between different types of processors are difficult because performance varies depending on the type of task. A benchmark is a more thorough way of measuring and comparing computer performance.The myth started around 1984 when comparing the Apple II with the IBM PC. The argument was that the PC was five times faster than the Apple II, as its Intel 8088 processor had a clock speed roughly 5x the clock speed of the MOS Technology 6502 used in the Apple. However, what really matters is not how finely divided a machine's instructions are, but how long it takes to complete a given task. Consider the LDA # (Load Accumulator Immediate) instruction. On a 6502 that instruction requires two clock cycles, or 2 μs at 1 MHz. Although the 4.77 MHz 8088's clock cycles are shorter, the LDA # needs 4 of them, so it takes 4 / 4.77 MHz = 0.84 μs. So that instruction runs only a little more than 2 times as fast on the original IBM PC than on the Apple II.".
- Megahertz_myth wikiPageExternalLink mhz_myth_320f.mov.
- Megahertz_myth wikiPageExternalLink story.php?news_id=3997.
- Megahertz_myth wikiPageExternalLink intel_cancels_tejas.
- Megahertz_myth wikiPageID "2093258".
- Megahertz_myth wikiPageLength "12092".
- Megahertz_myth wikiPageOutDegree "67".
- Megahertz_myth wikiPageRevisionID "701044706".
- Megahertz_myth wikiPageWikiLink AMD_FX.
- Megahertz_myth wikiPageWikiLink Advanced_Micro_Devices.
- Megahertz_myth wikiPageWikiLink Apple_II.
- Megahertz_myth wikiPageWikiLink Apple_Inc..
- Megahertz_myth wikiPageWikiLink Benchmark_(computing).
- Megahertz_myth wikiPageWikiLink BogoMips.
- Megahertz_myth wikiPageWikiLink Bulldozer_(microarchitecture).
- Megahertz_myth wikiPageWikiLink CPU_power_dissipation.
- Megahertz_myth wikiPageWikiLink Category:Clock_signal.
- Megahertz_myth wikiPageWikiLink Category:Microprocessors.
- Megahertz_myth wikiPageWikiLink Category:Misconceptions.
- Megahertz_myth wikiPageWikiLink Central_processing_unit.
- Megahertz_myth wikiPageWikiLink Clock_rate.
- Megahertz_myth wikiPageWikiLink Clock_signal.
- Megahertz_myth wikiPageWikiLink Complex_instruction_set_computing.
- Megahertz_myth wikiPageWikiLink Computer_performance.
- Megahertz_myth wikiPageWikiLink DOS.
- Megahertz_myth wikiPageWikiLink Hertz.
- Megahertz_myth wikiPageWikiLink IBM.
- Megahertz_myth wikiPageWikiLink IBM_Personal_Computer.
- Megahertz_myth wikiPageWikiLink Instruction_set.
- Megahertz_myth wikiPageWikiLink Instructions_per_cycle.
- Megahertz_myth wikiPageWikiLink Intel.
- Megahertz_myth wikiPageWikiLink Intel_80486.
- Megahertz_myth wikiPageWikiLink Intel_8088.
- Megahertz_myth wikiPageWikiLink Intel_Core_2.
- Megahertz_myth wikiPageWikiLink Jon_Rubinstein.
- Megahertz_myth wikiPageWikiLink MOS_Technology_6502.
- Megahertz_myth wikiPageWikiLink Macintosh.
- Megahertz_myth wikiPageWikiLink iWorld.
- Megahertz_myth wikiPageWikiLink Microprocessor.
- Megahertz_myth wikiPageWikiLink Microsoft.
- Megahertz_myth wikiPageWikiLink Microsoft_Windows.
- Megahertz_myth wikiPageWikiLink Multi-core_processor.
- Megahertz_myth wikiPageWikiLink NetBurst_(microarchitecture).
- Megahertz_myth wikiPageWikiLink New_York.
- Megahertz_myth wikiPageWikiLink P5_(microarchitecture).
- Megahertz_myth wikiPageWikiLink Pentium_4.
- Megahertz_myth wikiPageWikiLink Pentium_D.
- Megahertz_myth wikiPageWikiLink Pentium_II.
- Megahertz_myth wikiPageWikiLink Pentium_M.
- Megahertz_myth wikiPageWikiLink Performance_Rating.
- Megahertz_myth wikiPageWikiLink Pipeline_(computing).
- Megahertz_myth wikiPageWikiLink PowerPC.
- Megahertz_myth wikiPageWikiLink PowerPC_7xx.
- Megahertz_myth wikiPageWikiLink PowerPC_G4.
- Megahertz_myth wikiPageWikiLink Reduced_instruction_set_computing.
- Megahertz_myth wikiPageWikiLink Steve_Jobs.
- Megahertz_myth wikiPageWikiLink Stevenote.
- Megahertz_myth wikiPageWikiLink The_Joy_of_Tech.
- Megahertz_myth wikiPageWikiLink Thread_(computing).
- Megahertz_myth wikiPageWikiLink Windows_NT.
- Megahertz_myth wikiPageWikiLink X86.
- Megahertz_myth wikiPageWikiLinkText "Megahertz myth".
- Megahertz_myth wikiPageWikiLinkText "easily manipulable benchmark".
- Megahertz_myth wikiPageWikiLinkText "ever-increasing clock speeds".
- Megahertz_myth wikiPageWikiLinkText "megahertz myth".
- Megahertz_myth wikiPageUsesTemplate Template:Citation_needed.
- Megahertz_myth wikiPageUsesTemplate Template:Cleanup.
- Megahertz_myth wikiPageUsesTemplate Template:Multiple_issues.
- Megahertz_myth wikiPageUsesTemplate Template:Refimprove.
- Megahertz_myth wikiPageUsesTemplate Template:Reflist.
- Megahertz_myth subject Category:Clock_signal.
- Megahertz_myth subject Category:Microprocessors.
- Megahertz_myth subject Category:Misconceptions.
- Megahertz_myth type Circuit.
- Megahertz_myth type Redirect.
- Megahertz_myth comment "The megahertz myth, or less commonly the gigahertz myth, refers to the misconception of only using clock rate (for example measured in megahertz or gigahertz) to compare the performance of different microprocessors. While clock rates are a valid way of comparing the performance of different speeds of the same model and type of processor, other factors such as pipeline depth and instruction sets can greatly affect the performance when considering different processors.".
- Megahertz_myth label "Megahertz myth".
- Megahertz_myth sameAs Q2495304.
- Megahertz_myth sameAs Megahertsimyytti.
- Megahertz_myth sameAs Mythe_du_mégahertz.
- Megahertz_myth sameAs m.06lnk1.
- Megahertz_myth sameAs Миф_о_мегагерцах.
- Megahertz_myth sameAs Megahertzmyten.
- Megahertz_myth sameAs Q2495304.
- Megahertz_myth wasDerivedFrom Megahertz_myth?oldid=701044706.
- Megahertz_myth isPrimaryTopicOf Megahertz_myth.