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Aggregated Results
Compression Rate
| Data Compressors |
Total Size (bytes) |
Compressed Size (bytes) |
Space Saved (bytes) |
WinRK |
1,600,370,642
|
1,269,674,260 |
330,696,382 |
SBC Archiver |
1,600,370,642
|
1,280,941,446 |
319,429,196 |
Squeez |
1,600,370,642
|
1,284,515,424 |
315,855,218 |
WinAce |
1,600,370,642
|
1,304,423,074 |
295,947,568 |
7-Zip |
1,600,370,642
|
1,341,025,206 |
259,345,436 |
bzip2 |
1,600,370,642
|
1,377,029,133 |
223,341,509 |
WinRAR |
1,600,370,642
|
1,391,734,669 |
208,635,973 |
StuffIt |
1,600,370,642
|
1,403,591,646 |
196,778,996 |
WinZip |
1,600,370,642
|
1,403,753,756 |
196,616,886 |
gzip |
1,600,370,642
|
1,404,059,940 |
196,310,702 |
ARJ32 |
1,600,370,642
|
1,482,641,612 |
117,729,030 |
WinRK was the champion at compressing the filesets. It had an average compression rate of about 20.7%. It was, however, followed closely by SBC Archiver and Squeez, which had average compression rates of 20% and 19.7% respectively. The poorest compressor, by far, was ARJ32. It only had an average compression rate of 7.4%.
Compression Speed
| Data Compressors |
Total Size (bytes) |
Time (s) |
Speed (KB/s) |
ARJ32 |
1,600,370,642 |
57 |
27910.2 |
WinZip |
1,600,370,642 |
106 |
15073.7 |
gzip |
1,600,370,642 |
108 |
14863.7 |
WinRAR |
1,600,370,642 |
111 |
14404.8 |
StuffIt |
1,600,370,642 |
113 |
14107.6 |
bzip2 |
1,600,370,642 |
386 |
4143.5 |
SBC Archiver |
1,600,370,642 |
580 |
2758.1 |
Squeez |
1,600,370,642 |
694 |
2304.4 |
7-Zip |
1,600,370,642 |
848 |
1887.4 |
WinRK |
1,600,370,642 |
1,250 |
1279.9 |
WinAce |
1,600,370,642 |
1,258 |
1271.9 |
However, ARJ32 was the undisputed speed champion. It only took 57 seconds overall to completely process the complete fileset collection which weighed in at over 1.6GB. It was almost twice as fast as the runner-up, WinZip.
WinZip, together with gzip, WinRAR and StuffIt, were fast at compressing the filesets, just not as fast as ARJ32. They were much better than the other data compressors though, with overall compression speeds of 14-15MB/s.
The slowest compressors were WinRK and WinAce. Both data compressors took over 20 minutes to process the entire fileset collection.
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 for the aggregated results was ARJ32. Its super-fast compression speed allowed it to overcome its poor compression rate to become the efficiency champion. The quartet of WinRAR, WinZip, gzip and StuffIt were not far behind either. Overall, these five compressors are truly efficient compressors.
The other compressors may have been good at certain files, but overall, they were pretty inefficient. The three most inefficient compressors overall were 7-Zip, WinRK and WinAce. No matter how good they were at compressing files, their slow compression speeds totally killed their efficiency ratings.
