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7z vs. WinRAR file compression programs

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And the winner is…. , consistently.

I’ll add more on my later, but needless to say, I’m switching from WinRAR to 7z.  To be honest, I’ve used for the past 10 years or so and wanted it to be the best. While great, it’s not the best, 7z (in my tests which would mimic my use, this is in no way scientific) beat in almost all the scenarios, except for JPG images (I believe has a special algorithm for that, while 7z does not, but don’t quote me).  Below are the restuls and the set ups.

The first 2 tests are of the first, which consists of all my files from my collegiate carreer (undergraduate, , and the undergraduate work for my fiance), including powerpoints, images, word documents, pdf, movies, images, sound files, files, etc.  There’s a good assortment of files.

The second is of a very large website and intranet I’ve designed and managed, consisting of an even larger mix of files.  I will update the file types soon.

 

7z

WinRAR

Files

4639

4639

Start Size

1455 MB

1455 MB

Sub-Folders

358

358

Setting

Ultra / LZMA

Best

Dictionary Size

64 MB (Default)

4096 KB (Default)

Drives

E:\ (Read); E:\ (Write)

E:\ (Read); E:\ (Write)

 

 

Final Size

1132 MB

1237 MB

Time

20

19

Ratio

76%

83%

Difference

7% / 105 MB

-

 

7z

WinRAR

Files

34143

34143

Start Size

1314 MB

1314 MB

Sub-Folders

3614

3614

Setting

Ultra / LZMA

Best

Dictionary Size

64 MB (Default)

4096 KB (Default)

Drives

E:\ (Read); D:\ (Write)

E:\ (Read); D:\ (Write)

 

 

Final Size

735 MB

924 MB

Time

18.8

19.25

Ratio

53%

67%

Difference

14% / 189 MB

-

 

Test

Files

Type

Size

1

16

PDF

2.59MB

2

5

JPG

7.92MB

3

42

DOC(19)/DOCX(23)

21.3MB

 

7z – LDMZ 7z – ZIP
Test

Ratio

Final Size

Test

Ratio

Final Size

1

76%

1.98MB

1

80%

2.08MB

2

72%

5.78MB

2

75%

6.01MB

3

76%

16.3MB

3

87%

18.7MB

 

WinRAR – RAR WinRAR – ZIP
Test

Ratio

Final Size

Test

Ratio

Final Size

1

80%

2.08MB

1

80%

2.09MB

2

72%

5.74MB

2

76%

6.04MB

3

87%

18.6MB

3

88%

18.8MB

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