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Documents
Compression Rate
| Data Compressors |
Original Size (bytes) |
Compressed Size (bytes) |
Space Saved (bytes) |
WinRK |
200,007,960
|
96,021,831 |
103,986,129 |
7-Zip |
200,007,960
|
98,368,334 |
101,639,626 |
SBC Archiver |
200,007,960
|
99,123,187 |
100,884,773 |
Squeez |
200,007,960
|
112,656,481 |
87,351,479 |
WinRAR |
200,007,960
|
113,224,128 |
86,783,832 |
WinAce |
200,007,960
|
113,693,952 |
86,314,008 |
StuffIt |
200,007,960
|
123,061,078 |
76,946,882 |
WinZip |
200,007,960
|
124,346,357 |
75,661,603 |
bzip2 |
200,007,960
|
126,363,873 |
73,644,087 |
gzip |
200,007,960
|
128,078,540 |
71,929,420 |
ARJ32 |
200,007,960
|
129,670,730 |
70,337,230 |
In this test of four different document types, WinRK was the champion again. It edged out 7-Zip and SBC Archiver by reducing the fileset size to 96MB. That's a space saving of 52%. The trio of Squeez, WinRAR and WinAce were close behind, reducing the fileset size by 43-44%.
The other data compressors did pretty well too, showing compression rates of 35-39%. The poorest compressor, ARJ32, managed to compress the fileset to below 130MB which is 30MB larger than WinRK's archive.
Compression Speed
| Data Compressors
|
Original Size (bytes)
|
Time (s)
|
Speed (KB/s)
|
ARJ32 |
200,007,960 |
22.26 |
8985.1 |
gzip |
200,007,960 |
30.69 |
6517.0 |
bzip2 |
200,007,960 |
71.90 |
2781.8 |
7-Zip |
200,007,960 |
79.95 |
2501.7 |
StuffIt |
200,007,960 |
92.08 |
2172.1 |
SBC Archiver |
200,007,960 |
99.80 |
2004.1 |
WinRAR |
200,007,960 |
102.30 |
1955.1 |
WinZip |
200,007,960 |
127.69 |
1566.4 |
Squeez |
200,007,960 |
154.48 |
1294.7 |
WinAce |
200,007,960 |
156.73 |
1276.1 |
WinRK |
200,007,960 |
438.22 |
456.4 |
When it comes to compression speed though, ARJ32 was the king. It only took 22 seconds to compress 200MB of documents! At almost 9MB/s, it was far ahead of the rest of the pack. Only gzip came close at 6.5MB/s.
Although it was the best compressor of this fileset, WinRK was also the slowest compressor. It took over 7 minutes to complete the test. It was more than twice as slow as the second slowest compressor, WinAce.
Compression Efficiency
The compression efficiency rating is a simple way to evaluate the efficiency of each data compressor. This way, we can see which compressor can save the most space in the least time.
Please note that a higher efficiency rating does not mean the compressor is better. It just means the compressor has a better compression-to-speed ratio. A more efficient compressor is, of course, always more desirable than a less efficient one.
The most efficient data compressor when it comes to this bunch of assorted documents was ARJ32. Although it was the poorest compressor by a rather large margin, its tremendously fast compression speed made it a really efficient compressor. gzip was close behind, also thanks to its fast compression speed.
Although WinRK was really good at compressing documents, its extremely slow compression speed made it the most inefficient compressor by far. It was more than twice as inefficient as WinAce, the next most inefficient compressor.
