- #1
linux kid
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Where can I get a list of processing speeds in mbps for the major intel processors?
What are the MIPS ratings for major Intel processors?
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SUMMARY
The discussion centers on the MIPS (Million Instructions Per Second) ratings for major Intel processors, clarifying that Mbps is not a relevant metric for CPU performance. Participants highlight the importance of clock speed and pipeline length as indicators of processor speed. The Intel Core 2 Extreme QX6700 is specifically noted to have a MIPS rating of 57,063, showcasing significant advancements in processing power compared to older systems like the IBM System/370, which had a MIPS rating of only 1. The conversation emphasizes the complexity of CPU performance metrics and the need for accurate terminology.
PREREQUISITES- Understanding of CPU architecture and performance metrics
- Familiarity with MIPS (Million Instructions Per Second) as a performance measure
- Knowledge of pipeline architecture and branch prediction in processors
- Basic comprehension of clock speed and bus speed concepts
- Research Intel Core 2 Extreme QX6700 specifications and performance benchmarks
- Explore the concept of pipeline architecture in modern CPUs
- Learn about the differences between MIPS and other performance metrics like FLOPS
- Investigate the historical evolution of CPU performance from the IBM System/370 to contemporary processors
Hardware engineers, computer scientists, and technology enthusiasts interested in understanding CPU performance metrics and the evolution of processor technology.
- #2
verty
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millibits per second?
- #3
whatta
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what bits? going from where to where? undergoing what transformations? it seems more like memory or bus speed. they use flops for CPUs.
- #4
verty
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Well these processors have pipelines of say 15-30 stages or whatever. That means that an instruction has a 30 cycle turnaround time. Of course, the instructions are 'pipelined' so that many are put into the pipe one after the other. There is branch prediction logic to know what future instructions to put into the pipe.
Of course mistakes will be made and then there is a lag to bypass those erroneous instructions that were pipelined. So the performance can differ depending on the software itself. I think that usually the clock speed and the pipeline length are good indicators of the processor speed.
Notably, the earlier Athlons had a much shorter pipeline than the P4's which led to them having a PR rating, like 1700+ which actually ran at 1200Mhz or whatever, don't quote that figure.
Of course mistakes will be made and then there is a lag to bypass those erroneous instructions that were pipelined. So the performance can differ depending on the software itself. I think that usually the clock speed and the pipeline length are good indicators of the processor speed.
Notably, the earlier Athlons had a much shorter pipeline than the P4's which led to them having a PR rating, like 1700+ which actually ran at 1200Mhz or whatever, don't quote that figure.
- #5
ChrisLeslie
linux kid,
mbps is not a meaningful cpu performance indicator because (Intel) CPUs process in parallel. CPU speed is a measure based on the clocking rate forced on a CPU but does not accurately indicate final processing speed because different CPUs have different bus schemes and op code capability. "Bus speed", in XHz and slower than CPU speed, indicates how fast a system bus transfers wide words in parallel. Google "Intel specs".
mbps is not a meaningful cpu performance indicator because (Intel) CPUs process in parallel. CPU speed is a measure based on the clocking rate forced on a CPU but does not accurately indicate final processing speed because different CPUs have different bus schemes and op code capability. "Bus speed", in XHz and slower than CPU speed, indicates how fast a system bus transfers wide words in parallel. Google "Intel specs".
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- #6
MeJennifer
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Perhaps you mean MIPS which stands for "million instructions per second"?linux kid said:
In that case there is a Wikipedia http://en.wikipedia.org/wiki/Million_instructions_per_second" that lists the number of MIPS for various CPUs.
According to the article an Intel Core 2 Extreme QX6700 is rated at 57063 MIPS. Quite amazing, an IBM System/370 model 158-3 from 1972, which at the time was considered a pretty powerful computer, is rated at only 1 MIPS.
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