What's your CPU compression rate

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  1. Posts : 3,118
    Win7 Home Premium x64 SP1
       #41

    Cheers chap! I shall have a butchers in a min
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  2. Posts : 83
    Windows 8.1 Pro 64bit
       #42

    fgh
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  3. Posts : 83
    Windows 8.1 Pro 64bit
       #43

    Got a game running in the background, not sure if it makes a difference, but i was expecting higher, a little disappointed


    Microsoft Windows [Version 6.1.7601]
    Copyright (c) 2009 Microsoft Corporation. All rights reserved.

    C:\Users\brian>cpu -compression
    'cpu' is not recognized as an internal or external command,
    operable program or batch file.

    C:\Users\brian>cpu-compression
    'cpu-compression' is not recognized as an internal or external command,
    operable program or batch file.

    C:\Users\brian>winsat cpu -compression
    Windows System Assessment Tool
    > Running: Feature Enumeration ''
    > Run Time 00:00:00.00
    > Running: CPU Assessment '-compression'
    > Run Time 00:00:10.42
    > CPU LZW Compression 365.69 MB/s
    > Total Run Time 00:00:13.57

    C:\Users\brian>winsat cpu -compression
    Windows System Assessment Tool
    > Running: Feature Enumeration ''
    > Run Time 00:00:00.00
    > Running: CPU Assessment '-compression'
    > Run Time 00:00:10.19
    > CPU LZW Compression 365.98 MB/s
    > Total Run Time 00:00:13.23

    C:\Users\brian>
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  4. Posts : 155
    Windows 7 Professional 32 bit
       #44

    A really stupid question coming up, drum roll please...

    What is CPU compression?
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  5. Posts : 3,118
    Win7 Home Premium x64 SP1
       #45

    netadict said:
    A really stupid question coming up, drum roll please...

    What is CPU compression?
    Gary linked an explanation here mate :)

    Britton30 said:
    ganjiry said:
    Does anyone know what it's actually measuring? I'd got a load of browser tab's, you tube video and Procon running when I tested.
    Here's a fairly simple explanation Ryan, I didn't know either.
    PassMark CPU Benchmarks - CPU Test Information

    This is my i7-3770K rig, My i5-2550K got a 576.4MBs.
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  6. Posts : 5,915
    Windows 10 Pro X64
    Thread Starter
       #46

    update
    What's your CPU compression rate-cpu-compression.png
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  7. Posts : 5,915
    Windows 10 Pro X64
    Thread Starter
       #47

    netadict said:
    A really stupid question coming up, drum roll please...

    What is CPU compression?
    As stated in Gary's link

    The Compression Test measures the speed that the CPU can compress blocks of data into smaller blocks of data without losing any of the original data. The result is reported in Kilobytes per Second. This test uses complex data structures and complex data manipulation techniques to perform a function that is very common in software applications, ranging from backup software to Email software. The compression test uses an Adaptive encoding algorithm based on a method described by from Ian H. Witten, Radford M. Neal, and John G. Cleary in an article called “Arithmetic Coding for Data Compression”. The system uses a model which maintains the probability of each symbol being the next encoded. It reports a compression rate of 363% for English text, which is slightly better than the classic Huffman method. This tests uses memory buffers totaling about 16kb per core.
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  8. Posts : 155
    Windows 7 Professional 32 bit
       #48

    OK the cpu compresses data to enable it to deal with less data. This assumes that it's faster to compress and deal with the compressed data than to deal with non compressed data. Does compression mean something like zipping a file or trunjating data that the processor does not need?
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  9. Posts : 32
    win7ult64sp1retail
       #49

    "cpu compression" is the wrong title. "file compression cpu test" would be more descriptive and accurate I think. to my knowledge, the i7 doesn't have compression instructions. this is done through software.
    zipping a file is basically the same thing. except with this you time it.
    Last edited by jmichae3; 12 Dec 2013 at 05:18. Reason: more info
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  10. Posts : 155
    Windows 7 Professional 32 bit
       #50

    Great! Thank you all for your replies
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