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Documents
Compression Rate
| Data Compressors |
Original Size (bytes) |
Compressed Size (bytes) |
Space Saved (bytes) |
WinRK |
200,007,960
|
112,289,783 |
87,718,177 |
WinAce |
200,007,960
|
113,973,316 |
86,034,644 |
7-Zip |
200,007,960
|
115,597,833 |
84,410,127 |
Squeez |
200,007,960
|
116,708,317 |
83,299,643 |
SBC Archiver |
200,007,960
|
121,050,464 |
78,957,496 |
WinRAR |
200,007,960
|
126,094,213 |
73,913,747 |
StuffIt |
200,007,960
|
126,356,449 |
73,651,511 |
bzip2 |
200,007,960
|
128,420,046 |
71,587,914 |
WinZip |
200,007,960
|
131,397,220 |
68,610,740 |
gzip |
200,007,960
|
131,460,007 |
68,547,953 |
ARJ32 |
200,007,960
|
141,999,848 |
58,008,112 |
In this test of four different document types, WinRK was the champion again. It was ahead of the rest of the pack by reducing the fileset size to just over 112MB. That's a space saving of almost 44%. Close behind it was WinAce, which managed to reduce the fileset size by 86MB or 43%.
The other data compressors were pretty close too, showing compression rates of 35-40%. Only ARJ32 had noticeably poorer compression. It only managed to compress the fileset by a relatively poor 29%.
Compression Speed
| Data Compressors
|
Original Size (bytes)
|
Time (s)
|
Speed (KB/s)
|
ARJ32 |
200,007,960 |
8.96 |
22322.3 |
WinZip |
200,007,960 |
12.56 |
15924.2 |
WinRAR |
200,007,960 |
14.46 |
13831.8 |
gzip |
200,007,960 |
14.73 |
13578.3 |
StuffIt |
200,007,960 |
22.39 |
8932.9 |
bzip2 |
200,007,960 |
58.90 |
3395.7 |
Squeez |
200,007,960 |
60.21 |
3321.8 |
SBC Archiver |
200,007,960 |
64.56 |
3098.0 |
7-Zip |
200,007,960 |
70.29 |
2845.5 |
WinRK |
200,007,960 |
139.28 |
1436.0 |
WinAce |
200,007,960 |
143.71 |
1391.7 |
When it comes to compression speed though, ARJ32 was the king. It only took 9 seconds to compress 200MB of documents! At 22.3MB/s, it's far ahead of the rest of the pack. Even WinZip came in much slower at 15.9MB/s, with WinRAR and gzip close behind it.
WinRK and WinAce tied as the slowest compressors of this fileset. Both took over 2 minutes to complete the test, way above what it took the other compressors to complete the same task.
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. Its really fast compression speed more than made up for its terrible compression ratio. It was 18.5% more efficient than its nearest competitor, WinZip.
WinRAR and gzip were also very efficient compressors, with StuffIt in the middle of the pack. However, the other compressors were pretty inefficent compressors.
WinRK and WinAce, which were both equally good at compressing documents and equally slow at completing the task, were at the bottom of the efficiency chart. The space saved just could not offset the really long time it took for them to finish the task.
