Tag: WinZIP
7z vs. WinRAR file compression programs
by Steve O Hernandez on Feb.03, 2009, under Technology
And the winner is…. 7z, consistently.
I’ll add more on my review later, but needless to say, I’m switching from WinRAR to 7z. To be honest, I’ve used WinRAR 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 WinRAR in almost all the scenarios, except for JPG images (I believe WinRAR 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, masters, doctoral and the undergraduate work for my fiance), including powerpoints, images, word documents, pdf, movies, images, sound files, zip 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 |
|
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 |
SQL Server Express 2005 will not install: Error 1706
by Steve O Hernandez on Jan.21, 2008, under Technology
An installaton package for the product Microsoft SQL Server Native Client cannot be found. Try the installation again using a valid copy of the installation package ‘sqlncli.msi’
Open the downloaded executable with WinZip / WinRAR, etc. OR run the following command from a command prompt: SQLEXPR.EXE /x:c:\sqlexprtmp
Find the installer package sqlncli.msi and run it.
When prompted, select Uninstall and allow the uninstallation to complete.
Re-run the SQLEXPR.EXE installation executable. No reboot is required.
