From:  Jeff Woertz

Date:  March 19, 1994 (REVISION #1)

Topic: Ultra Compressor II test results vs ARJ and PKZIP


I recently had the chance to test the new ULTRA COMPRESSOR II against the
latest versions of ARJ (2.41) and PKZIP (2.04g).  Using maximum compression
on all tests, here is a summary of my findings:



PROGRAM NAME   # FILES  ORIG. SIZE   ARJ 2.41     PKZIP 2.04G    UC II
------------   -------  ----------   --------     -----------    ------

Comanche         189    12,417,024   7,420,911    7,370,658     7,239,334
Blake Stone       18     3,411,942   1,298,643    1,293,415     1,284,056
Chuck Yeager      10     1,329,007   1,197,135    1,195,876     1,192,328
My A/V files      92     5,137,737   3,432,817    3,420,810     3,300,678
My utils files   125     1,024,537     935,471      940,672       918,501
My WIN System    133     6,563,924   3,281,916    3,269,254     3,196,414
Lotus Racing       3     1,344,935   1,113,651    1,112,941     1,111,514
Wolf 3-D          43     4,871,489   1,994,019    1,987,959     1,961,018
BlueMax Flight    11     1,639,828     945,642      945,909       924,842 
Red Baron         51     2,141,289   1,689,829    1,674,463     1,647,482 
.WAV files        31       788,202     556,851      555,904       521,094
.GIF files        17     2,818,750   2,790,614    2,792,632     2,795,808
.WRI files        55       131,328      57,437       59,108        48,630
.AVI files         6     7,708,922   5,488,524    5,404,057     5,208,848     
.FLI files        14     3,960,424   3,922,404    3,920,104     3,919,860


As you can see, Ultra Compressor II had the best compression in these tests,
except while compressing .GIF files. It was also the fastest compressor.  I
am a devoted ARJ fan, especially due to the fact that ARJ lets you use multi-
ple disk volumes so you can back up large programs or your whole hard disk
while ARJ prompts you to put the next backup disk in the drive.  Unfortunately,
Ultra Compressor II does not seem to have that capability (as far as I can
tell).  I will continue to test these three compression programs and post my
results on this board.

Yours Truly,

Jeff Woertz